Sofa elasticity detection device

Abstract

The utility model belongs to the technical field of elasticity detection equipment, and particularly relates to a sofa elasticity detection device. According to the sofa elasticity detection device provided by the utility model, a perforated vertical plate, a middle transverse plate, a scale strip, a lower pressing plate, a clamping block, an end head block, a limiting hole, a permanent magnet frame body unit, an electromagnet, a mounting hole and a U-shaped frame are arranged on a slotted bottom plate, so that 1, the upward rebound stroke of the lower pressing plate can be detected through a marking pen and / or a camera; the recording is simple and accurate, and the difficulty of elasticity detection operation is greatly reduced; and 2, the lifting and lowering actions of the lower pressing plate correspond to the switching-on and switching-off operations of the electromagnet, so that the operation is very simple and convenient, and the noise is relatively low.

Description

Technical Field

[0001] The utility model belongs to the technical field of elasticity detection equipment, in particular to a sofa elasticity detection device. Background Art

[0002] When testing the elasticity of sofa materials, one of the common testing methods is the drop-and-rebound method. The general principle of this method is that the pressure block, which cannot be displaced horizontally and can only be raised and lowered vertically, is first raised, then lowered, and then falls on the sofa material. Finally, the material rebounds upward and the pressure block is pushed up. The amplitude of the upward push-up action is positively correlated with the elasticity of the sofa material.

[0003] The above-mentioned falling rebound method can also be used to quantitatively test the elastic value of the sofa material as needed after introducing a known reference quantity. The above-mentioned sofa material generally includes: seat cushion material, backrest material, and armrest material.

[0004] On the other hand, the detection of sofa material elasticity, whether qualitative or quantitative, requires the use of a falling rebound detection device, whose structural components mainly include: a falling block, a limit frame, and a frame scale.

[0005] For example, a Chinese utility model patent with patent announcement number CN217931142U and announcement date of November 29, 2022, discloses an elasticity detection device for sofa processing, including a device body, a placement structure, a support mechanism and a detection mechanism. The placement structure is located below the device body, the support mechanism is located at the upper end of the placement structure, and the detection mechanism is located inside the support mechanism. The detection mechanism includes a clamping plate, a slider, a pointer, a screw, a detection spring and a limit rod. The slider is fixed at the left and right ends of the clamping plate, and the pointer is fixed at the front end of the slider.

[0006] The elasticity detection device in this utility model patent has the following general structural principles and advantages: the slider is set as a T-shaped structure, so that the slider and the clamping plate are fixedly connected and stuck inside the slide groove to avoid the shaking of the clamping plate. At the same time, a pointer is set at the front end of the slider, and the pointer corresponds to the scale. When the sofa is tested for elasticity, the pointer follows the clamping plate to accurately point out the elastic length of the sofa elasticity test, making it more convenient to read data during testing.

[0007] However, in actual use, the elasticity detection device still has at least the following two shortcomings, which are also the technical problems to be solved by the present utility model, namely:

[0008] 1. The lifting structure of the slider is a motor plus a gear. This structure makes a lot of noise during operation. Not only the motor itself makes noise, but also the gear and the screw make a lot of noise.

[0009] 2. The elastic length can only be directly observed by the operator, but this observation opportunity is fleeting. The slider will fall immediately after it reaches the highest point of the rebound stroke, which will greatly increase the error of the observation data.

[0010] Therefore, in summary, there is an urgent need for a new elasticity detection device with a slider lifting structure having an outstanding mute effect and an easily observable highest point of the slider rebound stroke, so as to be used for detecting various types of sofa elastic materials. Utility Model Content

[0011] The utility model provides a sofa elasticity detection device, which can be arranged on a slotted bottom plate with an open hole vertical plate, a middle horizontal plate, a scale bar, a lower pressure plate, a clamping block, an end block, a limit hole, a permanent magnet frame unit, an electromagnet, a mounting hole, and a U-shaped frame, so that: 1. the upward rebound stroke of the lower pressure plate can be simply and accurately recorded by means of a marking pen and / or a camera, which greatly reduces the difficulty of the elasticity detection operation; 2. the lifting and lowering actions of the lower pressure plate correspond to the circuit-opening and circuit-breaking operations of the electromagnet, which is very simple and convenient, and has less noise.

[0012] The technical solution adopted by the utility model to solve the above-mentioned problem is: a sofa elasticity detection device, the structure includes a slotted bottom plate, a perforated vertical plate, an intermediate horizontal plate, a scale bar, a lower pressure plate, a clamping block, and an end block, and also includes a limiting hole arranged on the intermediate horizontal plate, a permanent magnet frame unit arranged on the lower pressure plate and plugged into the limiting hole, an electromagnet arranged on the upper surface of the intermediate horizontal plate and used for repelling and lifting the permanent magnet frame unit upward, an installation hole arranged on the end block and used for drawing the highest point of the upward rebound stroke of the lower pressure plate on the scale bar by inserting an installation marking pen, and a U-shaped frame arranged on the perforated vertical plate and used for photographing the upward rebound stroke of the lower pressure plate by installing a camera.

[0013] A further preferred technical solution is that the permanent magnet frame unit includes a vertical rod arranged on the upper surface of the lower pressure plate and inserted into the limiting hole, a transverse connecting plate arranged on the upper end surface of the vertical rod, and a permanent magnet sheet arranged on the lower surface of the transverse connecting plate and used to receive the upward repulsive magnetic force of the electromagnet.

[0014] A further preferred technical solution is that a ball is provided in the limiting hole.

[0015] A further preferred technical solution is that the permanent magnet frame unit also includes an oil receiving groove arranged on the upper surface of the lower pressure plate and provided with the vertical rod.

[0016] A further preferred technical solution is that a low side cross bar for supporting the sofa elastic block is provided on the side of the perforated vertical plate other than the scale bar, and a high center cross bar for supporting the sofa elastic block is provided on the side of the middle cross plate.

[0017] A further preferred technical solution is that the low side cross bars and the high center cross bars are arranged in pairs, and the number is at least 2 pairs.

[0018] A further preferred technical solution is that the permanent magnet frame unit further includes a limiting tube which is arranged on the upper surface of the middle horizontal plate and is sleeved with the vertical rod.

[0019] A further preferred technical solution is that the height of the upper end surface of the limiting tube is higher than the height of the upper end surface of the electromagnet.

[0020] A further preferred technical solution is that the number of the vertical rods is 2.

[0021] A further preferred technical solution is that the scale bars are provided on both sides of the terminal block, and pointers for aligning with the scale bars are provided on both side surfaces of the terminal block. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a schematic diagram of the positions of the low side crossbar and the high center crossbar in the utility model.

[0024] Figure 3 The utility model is a schematic diagram of the use method of the low side cross bar and the high center cross bar.

[0025] Figure 4 It is a schematic diagram of the positions of the mounting holes and the pointer in the utility model from a top view.

[0026] Figure 5 It is a schematic diagram of the position of the U-shaped frame in the utility model from a top view.

[0027] Figure 6 It is a schematic diagram of the position structure of the permanent magnet frame unit in the utility model.

[0028] Figure 7 It is a schematic diagram of the positions of the balls and the oil receiving groove in the utility model.

[0029] In the figure, the meanings of the symbols are as follows:

[0030] Marking pen a, camera b, sofa elastic block c;

[0031] Slotted bottom plate 11, perforated vertical plate 12, middle horizontal plate 13, scale bar 14, lower pressing plate 15, clamping block 16, end block 17;

[0032] Limiting hole 1, permanent magnet frame unit 2, electromagnet 3, mounting hole 4, U-shaped frame 5, ball 6, low-position side crossbar 7, high-position center crossbar 8, pointer 9;

[0033] Vertical rod 201 , horizontal connecting plate 202 , permanent magnet sheet 203 , oil receiving groove 204 , and limiting tube 205 . DETAILED DESCRIPTION

[0034] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0035] As attached Figure 1-7 As shown, a sofa elasticity detection device comprises a slotted bottom plate 11, a perforated vertical plate 12, an intermediate horizontal plate 13, a scale bar 14, a lower pressing plate 15, a clamping block 16, and an end block 17, and also comprises a limiting hole 1 arranged on the intermediate horizontal plate 13, a permanent magnet frame unit 2 arranged on the lower pressing plate 15 and plugged into the limiting hole 1, an electromagnet 3 arranged on the upper surface of the intermediate horizontal plate 13 and used for repelling and lifting the permanent magnet frame unit 2 upward, a mounting hole 4 arranged on the end block 17 and used for drawing the highest point of the upward rebound stroke of the lower pressing plate 15 on the scale bar 14 by inserting a mounting marker pen a, and a U-shaped frame 5 arranged on the perforated vertical plate 12 and used for photographing the upward rebound stroke of the lower pressing plate 15 by installing a camera b.

[0036] In this embodiment, the slots on the slotted bottom plate 11 are used to clamp and stabilize the sofa elastic block c so that it is always located directly below the lower pressing plate 15. The opening pattern on the hole vertical plate 12 is a rectangular opening with vertical long sides, and the scale bar 14 is a plurality of protruding or drawn horizontal short strips, or a whole of the above-mentioned horizontal short strips on the bottom plate.

[0037] In addition, the "T-shaped" structure composed of the block 16 and the end block 17 engages with the opening on the perforated vertical plate 12, making it difficult for the lower pressing plate 15 to shift laterally, and the end block 17 is exposed, serving as the basis for reading the scale indication.

[0038] The limiting hole 1 is a circular opening, and the electromagnet 3 is a commercially available product, which is used in conjunction with a switch to ensure that the lower pressure plate 15 can be lifted and lowered as needed, and can be lowered instantly.

[0039] In addition, the marking pen a is a pencil, which is first inserted horizontally into the mounting hole 4 and installed. With the upward rebound stroke of the lower pressing plate 15, a line segment that is repeated but overlapped can be drawn on or near the scale bar 14. The scale indication corresponding to the upper end of the line segment is the numerical result required for the sofa elasticity test.

[0040] Finally, the two ends of the U-shaped frame 5 are respectively arranged on the two sides of the opening of the opening vertical plate 12, and the scale bar 14 is located inside the opening area. At this time, after the camera b is installed on the U-shaped frame 5, the image of the upward rebound stroke of the lower pressing plate 15 can be obtained, which can be viewed multiple times, and the scale indication of the highest point of the upward rebound stroke of the lower pressing plate 15 can be obtained relatively accurately.

[0041] At this point, the use of the elasticity detection device not only does not produce a lot of mechanical operating noise, but also the upward rebound height reading is simple, convenient and highly accurate.

[0042] The permanent magnet frame unit 2 includes a vertical rod 201 arranged on the upper surface of the lower pressure plate 15 and inserted into the limiting hole 1, a horizontal connecting plate 202 arranged on the upper end surface of the vertical rod 201, and a permanent magnet sheet 203 arranged on the lower surface of the horizontal connecting plate 202 and used to receive the upward repulsive magnetic force of the electromagnet 3.

[0043] In this embodiment, the permanent magnet sheet 203 is a commercially available product, which is bonded to the lower surface of the transverse connecting plate 202 to ensure that when the electromagnet 3 is energized, the lower pressing plate 15 can be lifted to a desired height.

[0044] What is more important is that after the electromagnet 3 is equipped with a commercially available rheostat, the lifting height is flexibly adjustable, that is, the greater the electromagnet 3's electromagnetism intensity is, the higher the lifting height can be.

[0045] A ball 6 is arranged in the limiting hole 1 .

[0046] In this embodiment, the function of the ball 6 is to change the original sliding friction between the limiting hole 1 and the vertical rod 201 into rolling friction, so as to reduce the resistance of the lifting and lowering action of the vertical rod 201 and reduce the noise generated by friction.

[0047] In addition, the ball 6 is also used together with lubricating oil or lubricating paste to achieve better drag reduction and noise reduction effects.

[0048] The permanent magnet frame unit 2 further includes an oil receiving groove 204 disposed on the upper surface of the lower pressing plate 15 and provided with the vertical rod 201 .

[0049] In this embodiment, the vertical rod 201 is subjected to long-term lifting and lowering operations, and the above-mentioned lubricating oil or lubricating paste will inevitably remain thereon, and this part of the oil stains needs to be prevented from falling on the sofa elastic block c. Therefore, the oil stain receiving groove 204 is provided, so that even if the oil stains fall on the upper surface of the lower pressing plate 15, it is difficult for the oil stains to fall on the sofa elastic block c.

[0050] Finally, the relatively large amount of oil that may accumulate in the oil receiving tank 204 can be cleaned up regularly.

[0051] A low side cross bar 7 for supporting the sofa elastic block c is provided on the side of the perforated vertical plate 12 which is different from the scale bar 14, and a high center cross bar 8 for supporting the sofa elastic block c is provided on the side of the middle cross plate 13.

[0052] In this embodiment, the elasticity detection device has the side where the scale bar 14 is located as the front and back sides. Therefore, the low side crossbar 7 and the high center crossbar 8 are both arranged on the side of the device, and the two are used together, and their functions include at least:

[0053] First, the sofa elastic blocks c to be tested and / or the sofa elastic blocks c after testing can have an orderly and stable temporary storage location to prevent the sofa elastic blocks c from being scattered randomly;

[0054] Second, the multiple sofa elastic blocks c stacked in an orderly manner can also serve as a "sound absorbing" part for the sofa elasticity detection operation, so that the unpleasant audible noise generated by the device when in use is smaller.

[0055] The above words "low position, side, high position, center" all mean relative position characteristics, rather than clear position limitations. Finally, the sofa elastic block c can be temporarily stored on the paired low side crossbars 7 and high center crossbars 8. The specific method is shown in the attached Figure 3 .

[0056] The low side crossbars 7 and the high center crossbars 8 are arranged in pairs, and the number is at least 2 pairs.

[0057] In this embodiment, the perforated vertical plate 12 and the middle horizontal plate 13 form an inverted U-shaped frame, and the widths of the pressure plate 15 and the permanent magnet frame unit 2 are relatively small, and neither of them protrudes outside the frame. Therefore, the number of the low side crossbars 7 and the high center crossbars 8 is at most 4 pairs, which are arranged on both sides of the inverted U-shaped frame in pairs, and 4 sets of sofa elastic blocks c can be temporarily stored.

[0058] The permanent magnet frame unit 2 further includes a limiting tube 205 which is arranged on the upper surface of the middle horizontal plate 13 and sleeved with the vertical rod 201 .

[0059] In this embodiment, the first function of the limiting tube 205 is to supplement the sleeve limiting effect of the limiting hole 1 on the vertical rod 201, so that the vertical rod 201 is more difficult to deflect.

[0060] Therefore, the inner annular surface of the limiting tube 205 is aligned with the annular surface of the limiting hole 1 .

[0061] The height of the upper end surface of the limiting tube 205 is higher than the height of the upper end surface of the electromagnet 3 .

[0062] In this embodiment, the second function of the position limiting tube 205 is to protect the electromagnet 3 by a relatively higher upper end surface height, so as to prevent the electromagnet 3 and the permanent magnet sheet 203 from colliding and breaking.

[0063] On the other hand, when the lower pressing plate 15 is used for normal testing, the lowest point of its fall will not cause the transverse connecting plate 202 to collide with the limiting tube 205, which can be ensured by the conventional size setting of the device. Therefore, the magnet protection effect of the limiting tube 205 is effective only after the sofa elastic block c accidentally turns out and falls.

[0064] In addition, when the device is in standby, the circuit on the electromagnet 3 is disconnected, and the transverse connecting plate 202 is pressed on the limiting tube 205, which can prevent the electromagnet 3 and the permanent magnet sheet 203 from touching each other. This feature is another dimension of the above-mentioned magnet protection effect.

[0065] The number of the vertical rods 201 is two.

[0066] In this embodiment, the number of the limiting holes 1 is also corresponding to 2, and the positions and opening sizes thereof also correspond to the vertical rod 201.

[0067] The scale bars 14 are disposed on both sides of the terminal block 17 , and pointers 9 for aligning with the scale bars 14 are disposed on both side surfaces of the terminal block 17 .

[0068] In this embodiment, the camera b needs to be used together with the pointer 9, and the marking pen a and the pointer 9 can be used together or alternatively.

[0069] Moreover, the opening of the mounting hole 4 does not affect the installation of the pointer 9. Figure 4 .

[0070] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. A sofa elasticity detection device, comprising a slotted bottom plate (11), a perforated vertical plate (12), an intermediate horizontal plate (13), a scale bar (14), a lower pressing plate (15), a clamping block (16), and an end block (17), characterized in that: It also includes a limiting hole (1) arranged on the intermediate horizontal plate (13), a permanent magnet frame unit (2) arranged on the lower pressure plate (15) and plugged into the limiting hole (1), an electromagnet (3) arranged on the upper surface of the intermediate horizontal plate (13) and used to repel and lift the permanent magnet frame unit (2) upward, a mounting hole (4) arranged on the end block (17) and used to mark the highest point of the upward rebound stroke of the lower pressure plate (15) on the scale bar (14) by inserting a mounting marking pen (a), and a U-shaped frame (5) arranged on the perforated vertical plate (12) and used to shoot the upward rebound stroke of the lower pressure plate (15) by installing a camera (b).

2. A sofa elasticity detection device according to claim 1, characterized in that: The permanent magnet frame unit (2) comprises a vertical rod (201) arranged on the upper surface of the lower pressing plate (15) and plugged into the limiting hole (1), a horizontal connecting plate (202) arranged on the upper end surface of the vertical rod (201), and a permanent magnet sheet (203) arranged on the lower surface of the horizontal connecting plate (202) and used to receive the upward repulsive magnetic force of the electromagnet (3).

3. A sofa elasticity detection device according to claim 2, characterized in that: A ball (6) is arranged in the limiting hole (1).

4. A sofa elasticity detection device according to claim 3, characterized in that: The permanent magnet frame unit (2) further comprises an oil receiving groove (204) arranged on the upper surface of the lower pressing plate (15) and provided with the vertical rod (201).

5. The sofa elasticity detection device according to claim 1, characterized in that: A low side cross bar (7) for supporting the sofa elastic block (c) is provided on the side of the perforated vertical plate (12) different from the side where the scale bar (14) is provided, and a high center cross bar (8) for supporting the sofa elastic block (c) is provided on the side of the middle cross plate (13).

6. A sofa elasticity detection device according to claim 5, characterized in that: The low side cross bars (7) and the high center cross bars (8) are arranged in pairs, with the number being at least 2 pairs.

7. A sofa elasticity detection device according to claim 2, characterized in that: The permanent magnet frame unit (2) further comprises a position limiting tube (205) which is arranged on the upper surface of the middle horizontal plate (13) and sleeved with the vertical rod (201).

8. A sofa elasticity detection device according to claim 7, characterized in that: The height of the upper end surface of the limiting tube (205) is higher than the height of the upper end surface of the electromagnet (3).

9. The sofa elasticity detection device according to claim 2, characterized in that: The number of the vertical rods (201) is 2.

10. The sofa elasticity detection device according to claim 1, characterized in that: The scale bars (14) are provided on both sides of the end head block (17), and pointers (9) for aligning with the scale bars (14) are provided on both sides of the end head block (17).

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