Sofa fabric elasticity detection device

Abstract

The invention relates to the technical field of elasticity detection devices, in particular to a sofa cloth elasticity detection device which comprises a detection device body, a clamp, an L-shaped block, a first clamping plate, a second clamping plate and a replacement part, first sliding grooves are formed in the left side and the right side of the L-shaped block correspondingly, and fixing rods are installed on the inner walls of the first sliding grooves; sliding blocks are arranged on the outer sides of the separated parts of the fixing rods on the upper side and the lower side in a sleeving mode, and the sliding blocks are slidably connected to the inner walls of the first sliding grooves; the sofa fabric elasticity detection device has the beneficial effects that a sofa fabric is clamped backwards by pushing a first clamping plate, a supporting plate is synchronously driven, a lower pressing plate is pushed downwards, the sofa fabric on the surface of an L-shaped block is pressed into a lower pressing groove, the sofa fabric is prevented from being separated from a clamp in the elasticity detection process, and therefore the stability of the sofa fabric in the detection process is improved; when the first clamping plate is reset, the lower pressing plate is pushed upwards to be reset, subsequent elasticity detection work is further facilitated, the using effect of the elasticity detection device is improved, and the detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of elasticity detection devices, in particular to an elasticity detection device for sofa fabrics. Background Art

[0002] As an indispensable part of modern home, the comfort and durability of sofas directly affect the user experience. The elasticity of sofa fabrics is one of the key factors that determine the comfort of sofas. Therefore, accurately measuring and evaluating the elasticity of sofa fabrics is crucial for sofa manufacturers. Traditional sofa fabric elasticity testing methods mostly rely on manual operation, which involves manually pulling the sofa fabric and observing its recovery to evaluate the elasticity. However, this method has obvious human errors and is inefficient, and cannot meet the needs of modern production.

[0003] With the development of technology, automated sofa fabric elasticity testing devices have gradually been developed. The devices usually include clamping components, stretching mechanisms, and data acquisition systems. They can simulate the stretching force applied to the sofa fabric during actual use and record its elastic recovery data through sensors. However, in actual applications, the testing device still has problems, especially the design of the clamping components is not perfect, which causes the sofa fabric to easily detach from the fixture during the test, thus affecting the accuracy and reliability of the test results.

[0004] In the prior art, the clamping assembly of the elasticity testing device often adopts a simple clamping plate mechanism to fix the sofa cover on the device through an electric push rod. However, since the material and thickness of the sofa cover are different and there is a certain friction on the surface, this simple clamping method is difficult to ensure that the sofa cover always remains stable during the testing process. In particular, when high-speed or strong stretching is performed, the sofa cover is more likely to slip out of the clamp, resulting in test failure, thereby affecting the use effect of the elasticity testing device.

[0005] Therefore, a sofa fabric elasticity detection device is needed to solve the problem that the clamping mechanism of the existing elasticity detection device is unstable, causing the sofa fabric to easily fall off the clamp, thereby affecting the use effect of the elasticity detection device. Summary of the invention

[0006] The object of the present invention is to provide a sofa fabric elasticity detection device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a sofa fabric elasticity detection device, comprising a detection device body, a fixture, an L-shaped block, a clamping plate, a clamping plate and a replacement part, wherein a slide groove is provided on the left and right sides of the L-shaped block, a fixing rod is installed on the inner wall of the slide groove, and a sliding block is sleeved on the outer side of a separated part of the fixing rod on the upper and lower sides, and the sliding block is slidably connected to the inner wall of the slide groove, an elastic member is installed on the adjacent side of the sliding block on the upper and lower sides, and the adjacent side of the elastic member is installed on the inner wall of the slide groove, a supporting plate is installed on the rear side of the sliding block on the left and right sides, two supporting rods are installed on the adjacent side of the supporting plates on the upper and lower sides, and a lower pressing plate is installed on the adjacent end of the supporting rods on the upper and lower sides, and two elastic connecting rods are hinged on the rear side of the supporting plate, and the elastic connecting rods on the upper and lower sides are hinged on one side of the clamp of the clamp, a lower pressing groove is provided on the separated side of the L-shaped block on the upper and lower sides, and an insertion groove is provided on the separated side of the clamp of the upper and lower sides.

[0008] Preferably, a slide groove three is provided on the inner front side of the L-shaped block, a tension spring two is installed on the inner wall of the slide groove three, slide grooves four are provided on the separated sides of the L-shaped blocks on the upper and lower sides, a cross block is installed on the inner wall of the slide groove four, and movable blocks are installed on the separated sides of the cross blocks on the upper and lower sides.

[0009] Preferably, the rear end of the slide groove three is installed between the front side of the cross block, the slide groove three and the slide groove four are connected, and the adjacent sides of the moving blocks on the upper and lower sides are both fitted between the L-shaped blocks.

[0010] Preferably, two slide grooves are provided on the left and right sides of the rear portion of the L-shaped block, a through groove is provided in the middle of the two slide grooves, a button is inserted into the inner wall of the two slide grooves, a movable plate is installed at the proximate ends of the buttons on the upper and lower sides, an elastic member is sleeved on the outer side of the button, two auxiliary grooves are provided on the proximate sides of the L-shaped blocks on the upper and lower sides, and a clamping block is installed on the separated sides of the movable plates on the upper and lower sides, movable grooves are provided on the left and right sides of the rear portion of the L-shaped block, a limiting plate is inserted into the inner wall of the movable groove, a pushing block is installed on the front side of the limiting plate, a limiting plate is installed on the separated sides of the limiting plates on the left and right sides, a tension spring is installed on the rear side of the limiting plate, and a through groove is provided on the left and right sides of the clamping plate.

[0011] Preferably, one side of the second elastic member is installed between the second slide groove, and the other side is installed between the side of the button close to the movable plate, the button is inserted into the inner wall of the through groove, and the adjacent sides of the upper and lower buttons both pass through the auxiliary groove.

[0012] Preferably, the adjacent sides of the blocking blocks on the upper and lower sides pass through the movable groove and are plugged into the push block. The push block passes through the front side of the movable groove. The limit plate is slidably connected to the inner wall of the movable groove. The rear end of the tension spring 1 is installed on the rear side of the inner wall of the movable groove, and the tension spring 1 is in a stretched state.

[0013] Preferably, the rear side of the limiting plate is inserted into the inner wall of the through groove, and the two slide grooves on the left and right sides are connected to the lower pressing groove.

[0014] Preferably, a connecting block is installed at the front of the adjacent side of the upper and lower clamps, and a mounting groove is opened at the separated side of the upper and lower L-shaped blocks, and two fixing bolts are inserted at the front side of the inner wall of the mounting groove.

[0015] Preferably, the connecting block is inserted into the inner wall of the mounting groove, the fixing bolt passes through the connecting block, and the rear end is threadedly connected to the rear side of the inner wall of the mounting groove.

[0016] Preferably, the first clamp is installed on the rear side of the L-shaped block, the second clamp is installed between the clamp, the front side of the support plate is fitted between the L-shaped block, the lower pressure plates on the upper and lower sides are symmetrically arranged, and the clamps on the upper and lower sides are symmetrically arranged.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The sofa cover elasticity detection device proposed in the present invention clamps the sofa cover by pushing the clamping plate 1 backwards, and simultaneously drives the supporting plate and pushes the lower pressing plate downwards, so as to press the sofa cover on the surface of the L-shaped block into the lower pressing groove, thereby preventing the sofa cover from escaping from the clamp during the elasticity detection process, thereby improving the stability of the sofa cover during the detection process, and at the same time utilizing the elastic force of the elastic part 1 to push the lower pressing plate upwards to reset when the clamping plate 1 is reset, thereby facilitating subsequent elasticity detection work, thereby improving the use effect of the elasticity detection device and increasing the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereogram of the present invention;

[0020] Figure 2 This is a schematic diagram of the support rod structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection block structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the L-shaped block structure of the present invention;

[0023] Figure 5 for Figure 4 Structural cross-section at the middle CC;

[0024] Figure 6 for Figure 4 Structural cross-section at the middle BB;

[0025] Figure 7 for Figure 4 Structural cross-section at AA in the middle;

[0026] Figure 8 This is a schematic diagram of the structure of the slider of the present invention;

[0027] Fig. 9 This is a schematic diagram of the through-groove structure of the present invention;

[0028] Fig.10 This is a schematic diagram of the structure of the lower pressing plate of the present invention;

[0029] Fig.11 This is a schematic diagram of the cross block structure of the present invention;

[0030] Fig.12 This is a schematic diagram of the structure of the push block of the present invention;

[0031] Fig.13 This is a schematic diagram of the structure of the lower pressure groove of the present invention;

[0032] Fig.14 This is a schematic diagram of the structure of the chute 4 of the present invention;

[0033] Fig.15 It is a rear view of the replacement part of the present invention;

[0034] Fig.16 It is the right side view of the replacement part of the present invention.

[0035] In the figure: 1. detection device body; 2. fixture; 3. L-shaped block; 4. support plate; 5. clamp plate 1; 6. support rod; 7. clamp plate 2; 8. connection block; 9. fixing bolt; 10. mounting groove; 11. fixing rod; 12. elastic connecting rod; 13. elastic member 1; 14. moving block; 15. slide slot 1; 16. slide slot 2; 17. button; 18. elastic member 2; 19. moving plate; 20. tension spring 1; 21. lower pressure plate; 22. slide slot 3; 23. tension spring 2; 24. slide slot 4; 25. through slot; 26. push block; 27. limit plate; 28. moving slot; 29. ​​limit plate; 30. slider; 31. insertion slot; 32. through slot; 33. cross block; 34. clamping block; 35. lower pressure slot; 36. auxiliary slot; 37. replacement part. DETAILED DESCRIPTION

[0036] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figures 1 to 16 The present invention provides a technical solution: a sofa fabric elasticity detection device, comprising a detection device body 1, a fixture 2, an L-shaped block 3, a clamp 15, a clamp 27 and a replacement part 37. When the function of the L-shaped block 3 is not needed, the replacement part 37 is assembled with the fixture 2, so as to meet the use requirements of different users. The fixture 2 and the L-shaped block 3 are integrated. In order to facilitate the maintenance of the parts on the L-shaped block 3, modular assembly is adopted. A slide groove 15 is provided on the left and right sides of the L-shaped block 3. A fixing rod 11 is installed on the inner wall of the slide groove 15. A sliding block 30 is sleeved on the outer side of the separated part of the fixing rod 11 on the upper and lower sides. The sliding block 30 is slidably connected to the inner wall of the slide groove 15. An elastic member 13 is installed on the adjacent side of the sliding blocks 30 on the upper and lower sides. The adjacent side of the elastic member 13 on the upper and lower sides is installed on the inner wall of the slide groove 15. Support members are installed on the rear sides of the sliding blocks 30 on the left and right sides. The plate 4 has two support rods 6 installed on the adjacent sides of the upper and lower support plates 4, and a lower pressure plate 21 is installed on the adjacent ends of the upper and lower support rods 6. The rear side of the support plate 4 is hinged with two elastic connecting rods 12, and the upper and lower elastic connecting rods 12 are hinged on the side of the clamp 2 near the clamp 5. The separated sides of the upper and lower L-shaped blocks 3 are provided with a lower pressure groove 35, and the separated sides of the upper and lower clamps 5 are provided with an insertion groove 31; the clamp 5 is installed on the rear side of the L-shaped block 3 and installed between the clamp 2 and the clamp 2, so that the clamp 5 is used to cooperate with the clamp 2 to clamp the sofa cover backward, so as to perform the subsequent elastic detection operation, and the front side of the support plate 4 is fitted with the L-shaped block 3, the upper and lower lower pressure plates 21 are symmetrically arranged, and the upper and lower clamps 2 are symmetrically arranged, so that the elasticity detection is performed after the two sides of the sofa cover are clamped by the clamps 2 on the upper and lower sides.

[0038] First, the two sides of the sofa cover are respectively penetrated through the upper and lower insertion grooves 31 and placed on the surface of the L-shaped block 3. Subsequently, the two clamping plates 5 are pushed backward, and the elastic connecting rod 12 is used to drive the two supporting plates 4 to move toward each other, and at the same time, the slider 30 is driven to slide along the outer side of the fixing rod 11, and the elastic member 13 is squeezed on the inner wall of the slide groove 15 to be in a compressed state. At this time, due to the movement of the supporting plates 4 toward each other, the upper and lower supporting rods 6 on both sides are driven to move toward each other, and the lower pressing plate 21 is simultaneously pushed to gradually insert into the inner wall of the lower pressing groove 35, so that the lower pressing plate 21 pushes the sofa cover to be pressed into the inner wall of the lower pressing groove 35, so as to increase the stability of the sofa cover clamping, thereby increasing the detection effect of the detection device body 1, and after the detection is completed, the clamping plate 5 moves forward and resets, thereby using the elastic force of the elastic member 13 to drive the supporting plate 4 to reset, so as to facilitate the subsequent elastic detection.

[0039] Embodiment 2: On the basis of embodiment 1, in order to achieve the flatness of the excess fabric on the surface of the L-shaped block 3 and prevent the lower pressure plate 21 from wrinkling and loosening during elastic detection after being pressed down, a slide groove 3 22 is provided on the front side of the inner part of the L-shaped block 3, and a tension spring 23 is installed on the inner wall of the slide groove 3 22. A slide groove 4 24 is provided on the separated side of the upper and lower L-shaped blocks 3, and a cross block 33 is installed on the inner wall of the slide groove 4 24. A moving block 14 is installed on the separated side of the cross blocks 33 on the upper and lower sides; a spring 23 is installed between the rear end of the slide groove 3 22 and the front side of the cross block 33. , so that when the clamping plate 1 5 pushes the sofa cloth backward for clamping, it simultaneously drives the sofa cloth to move backward and fit with the surface of the clamping plate 2 7, and then utilizes the cooperation between the tension spring 23 and the moving block 14 to keep the excess sofa cloth on the surface of the L-shaped block 3 in a flat state, so that the lower pressing plate 21 is pressed downward into the inner wall of the lower pressing groove 35, and the slide groove 3 22 and the slide groove 4 24 are connected, so as to facilitate the resetting of the tension spring 23, and the adjacent sides of the moving blocks 14 on the upper and lower sides are both fitted with the L-shaped block 3, so as to facilitate the moving block 14 to slide along the surface of the L-shaped block 3 and stretch the sofa cloth.

[0040] When the upper and lower clamps 15 are moved backward, the redundant sofa material on the surface of the L-shaped block 3 is gradually flattened, and the movable block 14 is pulled to drive the cross block 33 to slide along the inner wall of the slide groove 24, and the tension spring 23 is pulled backward to stretch, and then the cooperation between the tension spring 23, the movable block 14 and the clamp 15 is utilized to keep the redundant sofa material on the surface of the L-shaped block 3 always flat, and at the same time, it can prevent the sofa material from breaking and popping out during the elastic test, and then when the lower pressure plate 21 pushes the sofa material to press into the inner wall of the lower pressure groove 35, it prevents it from wrinkling, resulting in sliding during the elastic test, and after the test is completed, the clamp 15 moves forward and resets, thereby using the elastic force of the elastic member 13 to drive the support plate 4 to reset for subsequent elastic test.

[0041] Embodiment 3: On the basis of embodiment 2, in order to make the tested sofa cloth be centered between the first plywood 5 and the second plywood 7 to prevent displacement from affecting the test result, the left and right sides of the rear of the L-shaped block 3 are provided with a second slide groove 16, the middle of the second slide groove 16 is provided with a through groove 25, the inner wall of the second slide groove 16 is plugged with a button 17, the adjacent ends of the buttons 17 on the upper and lower sides are both installed with a moving plate 19, the outer side of the button 17 is sleeved with an elastic member 2 18, the adjacent sides of the upper and lower L-shaped blocks 3 are both provided with two auxiliary grooves 36, the separated sides of the upper and lower moving plates 19 are both installed with a card block 34, and the L-shaped block 3, movable grooves 28 are provided on both sides of the rear part, and a limiting plate 29 is inserted into the inner wall of the movable groove 28, and a push block 26 is installed on the front side of the limiting plate 29. The limiting plates 27 are installed on the separated sides of the limiting plates 29 on the left and right sides, and a tension spring 20 is installed on the rear side of the limiting plate 27. A through groove 32 is provided on both sides of the clamping plate 5; one side of the elastic member 18 is installed between the sliding groove 16, and the other side is installed between the side of the button 17 close to the movable plate 19, the button 17 is inserted into the inner wall of the through groove 25, and the adjacent sides of the buttons 17 on the upper and lower sides are penetrated by the auxiliary groove 36, so that the lower pressing plate 2 When the sofa cover is pushed downward, the button 17 is pushed synchronously, and the moving plate 19 is driven to slide along the inner wall of the auxiliary groove 36; the adjacent sides of the clamping blocks 34 on the upper and lower sides penetrate the moving groove 28 and are plugged with the push-resisting block 26, and the push-resisting block 26 penetrates the front side of the moving groove 28, so that when the moving plate 19 moves backward along the inner wall of the auxiliary groove 36, the clamping block 34 is driven to separate from the push-resisting block 26, and then the tension of the tension spring 20 is used to drive the limiting plate 29 to penetrate the through groove 32 and fit with the front side of the clamping plate 27, and the limiting plate 27 is slidably connected to the inner wall of the moving groove 28, and the limiting plate 27 plays a limiting role, thereby preventing To prevent the limiting plate 29 from detaching from the movable groove 28, the rear end of the tension spring 20 is installed on the rear side of the inner wall of the movable groove 28, and the tension spring 20 is in a stretched state, so that the elastic force of the tension spring 20 is used to drive the limiting plate 29 to fit with the front side of the clamping plate 27, and then the left and right limiting plates 29 are used to keep the sofa cover centered to prevent its position from shifting during the detection process; the rear side of the limiting plate 29 is inserted into the inner wall of the through groove 32, and the left and right side slide grooves 16 are both connected to the lower pressure groove 35, so that when the lower pressure plate 21 is inserted into the inner wall of the lower pressure groove 35, the two buttons 17 are driven to move to release the restriction on the limiting plate 29.

[0042] When clamping the sofa fabric, since the lower pressing plate 21 will be inserted into the inner wall of the lower pressing groove 35, at this time, it pushes the two buttons 17 to slide along the inner wall of the second slide groove 16, and at the same time squeezes the elastic member 2 18 to be in a compressed state on the inner wall of the second slide groove 16, and drives the movable plates 19 on the upper and lower sides to move toward each other along the inner wall of the auxiliary groove 36, thereby driving the card block 34 to separate from the pushing block 26. At this time, since the tension spring 1 20 is in a stretched state, it drives the limit plate 27 to slide backward along the inner wall of the movable groove 28 to reset, and drives the limiting plate 29 to slide backward along the inner wall of the movable groove 28 to penetrate the through groove 32, and at the same time its rear side is in contact with the surface of the second clamping plate 7, so that the sofa fabric to be tested is centered between the clamping plate 1 5 and the second clamping plate 7 to prevent it from being tested. When the limit plate 29 needs to be reset, the clamping plate 15 is reset and the lower pressing plate 21 is separated from the button 17, so that the elastic force of the elastic member 18 is used to push the button 17 to reset, and then the limit plate 29 is directly pushed forward to slide forward along the inner wall of the movable groove 28, and the push block 26 is driven to pass through the front side of the movable groove 28, and the push block 34 is moved backward and squeezes the elastic member 18. When the push block 26 is completely reset, the elastic force of the elastic member 18 is used to drive the block 34 to be plugged into the push block 26 to clamp the limit plate 29. At this time, the tension spring 1 20 is in a stretched state on the inner wall of the movable groove 28, which is convenient for subsequent use.

[0043] Embodiment 4: On the basis of embodiment 3, in order to realize modular assembly to meet the usage requirements of different users and facilitate subsequent maintenance, connecting blocks 8 are installed on the front of the adjacent sides of the upper and lower clamps 2, and mounting grooves 10 are opened on the separated sides of the upper and lower L-shaped blocks 3. Two fixing bolts 9 are inserted into the front side of the inner wall of the mounting groove 10; the connecting block 8 is inserted into the inner wall of the mounting groove 10, the fixing bolts 9 pass through the connecting block 8, and the rear end is threadedly connected to the rear side of the inner wall of the mounting groove 10, so that the fixing bolts 9 are used to assemble the clamp 2 with the L-shaped block 3 and the connecting block 8, and subsequent disassembly is convenient.

[0044] When maintenance of the L-shaped block 3 is required, first unscrew the fixing bolt 9 and detach it from the L-shaped block 3, then remove the L-shaped block 3 and detach the connecting block 8 from the mounting groove 10. At this time, the L-shaped block 3 and the parts on the rear side thereof can be maintained. After completion, the L-shaped block 3 is reset, and the connecting block 8 is inserted into the inner wall of the mounting groove 10, and then the fixing bolt 9 is inserted into the mounting groove 10 and passes through the connecting block 8, so that the rear end of the fixing bolt 9 is screwed with the rear side of the inner wall of the mounting groove 10, and then the clamp 2 is assembled with the L-shaped block 3. When the user does not need to use the function on the L-shaped block 3, the L-shaped block 3 is removed, and then the replacement part 37 is assembled with the clamp 2, so that it can meet the usage needs of different users and facilitate later maintenance.

[0045] Embodiment 5: Based on Embodiment 4, a method for using a sofa fabric elasticity detection device is proposed, and the method comprises the following steps:

[0046] Step 1, firstly, the two sides of the sofa cloth are respectively penetrated through the upper and lower insertion grooves 31, and are sleeved on the outer side of the moving block 14, then, the two clamping plates 15 are pushed to move backward, and the two supporting plates 4 are driven to move toward each other by the elastic connecting rod 12, and at the same time, the slider 30 is driven to slide along the outer side of the fixed rod 11, and the elastic member 13 is squeezed on the inner wall of the slide groove 15 to be in a compressed state. At this time, due to the movement of the supporting plates 4 towards each other, the upper and lower supporting rods 6 on both sides are driven to move towards each other, and the lower pressing plate 21 is simultaneously pushed to gradually insert into the inner wall of the lower pressing groove 35, and as the upper and lower clamping plates 15 on both sides move backward, the excess sofa cloth on the surface of the L-shaped block 3 is gradually flattened, and at the same time, the moving block 14 is pulled to drive the cross block 33 along The inner wall of the slide groove 24 slides and pulls the tension spring 23 to stretch backward, and then the cooperation between the tension spring 23, the moving block 14 and the clamping plate 1 5 is used to keep the excess sofa fabric on the surface of the L-shaped block 3 always flat, and at the same time prevent the sofa fabric from breaking and jumping out during the elasticity test, and then when the lower pressing plate 21 pushes the sofa fabric into the inner wall of the lower pressing groove 35, it prevents it from wrinkling, resulting in sliding during the elasticity test, thereby increasing the detection effect of the detection device body 1, and after the test is completed, the clamping plate 1 5 moves forward to reset, so that the elastic force of the elastic member 13 is used to drive the support plate 4 to reset, and the elastic force of the tension spring 23 is used to drive the moving block 14 to reset, so as to facilitate the subsequent elasticity test.

[0047] Step 2, when clamping the sofa fabric, since the lower pressing plate 21 will be inserted into the inner wall of the lower pressing groove 35, at this time, it pushes the two buttons 17 to slide along the inner wall of the second slide groove 16, and at the same time squeezes the elastic member 2 18 to be in a compressed state on the inner wall of the second slide groove 16, and drives the upper and lower sides of the movable plates 19 to move toward each other along the inner wall of the auxiliary groove 36, thereby driving the card block 34 to separate from the pushing block 26. At this time, since the tension spring 1 20 is in a stretched state, it drives the limit plate 27 to slide backward along the inner wall of the movable groove 28 to reset, and drives the limiting plate 29 to slide backward along the inner wall of the movable groove 28 to penetrate the through groove 32, and at the same time its rear side is in contact with the surface of the second clamping plate 7, so that the sofa fabric being tested is centered between the clamping plate 1 5 and the second clamping plate 7, preventing When the limit plate 29 needs to be reset, the clamping plate 1 5 is reset and the lower pressing plate 21 is separated from the button 17, so that the button 17 is reset by the elastic force of the elastic member 2 18, and then the limit plate 29 is directly pushed forward to slide forward along the inner wall of the moving groove 28, and the push block 26 is driven to penetrate the front side of the moving groove 28, and the push block 34 is moved backward and squeezes the elastic member 2 18. When the push block 26 is completely reset, the elastic force of the elastic member 2 18 is used to drive the block 34 to be plugged with the push block 26 to clamp the limit plate 29. At this time, the tension spring 1 20 is in a stretched state on the inner wall of the moving groove 28, which is convenient for subsequent use.

[0048] Step 3. When the L-shaped block 3 needs to be maintained, first unscrew the fixing bolt 9 and let it detach from the L-shaped block 3, then remove the L-shaped block 3 and let the connecting block 8 detach from the mounting groove 10. At this time, the L-shaped block 3 and the parts on the rear side thereof can be maintained. After completion, the L-shaped block 3 is reset, and the connecting block 8 is inserted into the inner wall of the mounting groove 10, and then the fixing bolt 9 is inserted into the mounting groove 10 and passes through the connecting block 8, so that the rear end of the fixing bolt 9 is screwed with the rear side of the inner wall of the mounting groove 10, and then the clamp 2 is assembled with the L-shaped block 3. When the user does not need to use the function on the L-shaped block 3, the L-shaped block 3 is removed, and then the replacement part 37 is assembled with the clamp 2, so that it can meet the usage needs of different users and facilitate later maintenance.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sofa fabric elasticity detection device, comprising a detection device body (1), a fixture (2), an L-shaped block (3), a first clamp (5), a second clamp (7) and a replacement part (37), characterized in that: The left and right sides of the L-shaped block (3) are provided with a slide groove (15), the inner wall of the slide groove (15) is installed with a fixing rod (11), and the outer sides of the separated parts of the fixing rods (11) on the upper and lower sides are sleeved with sliders (30), and the sliders (30) are slidably connected to the inner wall of the slide groove (15), and the adjacent sides of the sliders (30) on the upper and lower sides are installed with elastic members (13), and the adjacent sides of the elastic members (13) on the upper and lower sides are installed on the inner wall of the slide groove (15), and the rear sides of the sliders (30) on the left and right sides are installed with A support plate (4), two support rods (6) are installed on the adjacent sides of the support plates (4) on the upper and lower sides, and a lower pressure plate (21) is installed on the adjacent ends of the support rods (6) on the upper and lower sides. The rear side of the support plate (4) is hinged with two elastic connecting rods (12), and the elastic connecting rods (12) on the upper and lower sides are hinged on the side of the clamp (2) close to the clamp (5). The L-shaped blocks (3) on the upper and lower sides are provided with a lower pressure groove (35) on the separated sides, and the clamp (5) on the upper and lower sides are provided with an insertion groove (31) on the separated sides.

2. A sofa fabric elasticity detection device according to claim 1, characterized in that: A slide groove three (22) is provided on the inner front side of the L-shaped block (3), and a tension spring two (23) is installed on the inner wall of the slide groove three (22). A slide groove four (24) is provided on the separated sides of the upper and lower sides of the L-shaped block (3), and a cross block (33) is installed on the inner wall of the slide groove four (24). A moving block (14) is installed on the separated sides of the cross block (33) on the upper and lower sides.

3. A sofa fabric elasticity detection device according to claim 2, characterized in that: The rear end of the slide groove three (22) is installed between the front side of the cross block (33), the slide groove three (22) and the slide groove four (24) are connected, and the adjacent sides of the moving blocks (14) on the upper and lower sides are both fitted between the L-shaped blocks (3).

4. A sofa fabric elasticity detection device according to claim 1, characterized in that: The rear left and right sides of the L-shaped block (3) are provided with two slide grooves (16), the middle of the two slide grooves (16) is provided with a through groove (25), the inner wall of the two slide grooves (16) is plugged with a button (17), the adjacent ends of the buttons (17) on the upper and lower sides are provided with a movable plate (19), the outer side of the button (17) is provided with two elastic members (18), the adjacent sides of the L-shaped blocks (3) on the upper and lower sides are provided with two auxiliary grooves (36), the movable plates (19 ... A clamping block (34) is installed on the separated side, a movable groove (28) is opened on the left and right sides of the rear part of the L-shaped block (3), a limiting plate (29) is inserted into the inner wall of the movable groove (28), a push block (26) is installed on the front side of the limiting plate (29), and a limiting plate (27) is installed on the separated side of the limiting plate (29) on the left and right sides, a tension spring (20) is installed on the rear side of the limiting plate (27), and a through groove (32) is opened on the left and right sides of the clamp (5).

5. A sofa fabric elasticity detection device according to claim 4, characterized in that: One side of the second elastic member (18) is installed between the second slide groove (16), and the other side is installed between the side of the button (17) close to the movable plate (19). The button (17) is inserted into the inner wall of the through groove (25), and the adjacent sides of the buttons (17) on the upper and lower sides both pass through the auxiliary groove (36).

6. A sofa fabric elasticity detection device according to claim 4, characterized in that: The adjacent sides of the clamping blocks (34) on the upper and lower sides pass through the movable groove (28) and are plugged into the push block (26). The push block (26) passes through the front side of the movable groove (28). The limit plate (27) is slidably connected to the inner wall of the movable groove (28). The rear end of the tension spring (20) is installed on the rear side of the inner wall of the movable groove (28), and the tension spring (20) is in a stretched state.

7. A sofa fabric elasticity detection device according to claim 4, characterized in that: The rear side of the limiting plate (29) is inserted into the inner wall of the through groove (32), and the second slide grooves (16) on the left and right sides are both connected to the lower pressing groove (35).

8. The sofa fabric elasticity detection device according to claim 1, characterized in that: A connecting block (8) is installed at the front of the adjacent side of the upper and lower clamps (2), and a mounting groove (10) is provided at the separated side of the upper and lower L-shaped blocks (3), and two fixing bolts (9) are inserted at the front side of the inner wall of the mounting groove (10).

9. A sofa fabric elasticity detection device according to claim 8, characterized in that: The connecting block (8) is inserted into the inner wall of the mounting groove (10), and the fixing bolt (9) passes through the connecting block (8), and the rear end is threadedly connected to the rear side of the inner wall of the mounting groove (10).

10. The sofa fabric elasticity detection device according to claim 1, characterized in that: The first clamping plate (5) is installed on the rear side of the L-shaped block (3), the second clamping plate (7) is installed between the clamp (2), the front side of the support plate (4) is fitted between the L-shaped block (3), the lower pressure plates (21) on the upper and lower sides are symmetrically arranged, and the clamps (2) on the upper and lower sides are symmetrically arranged.

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