Fitting force testing device

Abstract

The present invention discloses a bonding force testing device, comprising: a bottom plate; a bracket arranged on the bottom plate; a fixing unit arranged on the bracket, the fixing unit comprising a connecting structure for fixing a first bonding piece; and a force applying unit arranged on the bracket, the force applying unit being used to apply a force to a second bonding piece so that the first bonding piece is separated from the second bonding piece. The present invention can accurately detect the bonding force between bonding pieces.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, and in particular to a bonding force testing device. Background Art

[0002] For workpieces prepared by laminating, bonding, etc., it is necessary to test the laminating force between the laminating parts to understand whether the workpiece meets the use requirements or various strength, durability and other standards. For example, in the field of display technology, the touch display screen is roughly divided into three parts, from top to bottom, they are protective glass, touch screen and display screen (such as LCD screen), and the touch screen and display screen are assembled by laminating. In order to ensure the overall quality of the screen, after the display screen and touch screen are laminated, it is necessary to test the laminating force between the display screen and the touch screen.

[0003] In the prior art, the display screen and the touch screen are generally clamped and fixed, and then the two are separated from the corners to test the force applied for separation. However, separation in this way may be affected by the clamping force, resulting in deviation in the test result. Summary of the invention

[0004] The main purpose of the present invention is to provide a bonding force testing device to solve the problem in the prior art that the test result is affected by the clamping force.

[0005] According to one aspect of the present invention, a bonding force testing device is proposed, comprising: a base plate; a bracket arranged on the base plate; a fixing unit arranged on the bracket, the fixing unit comprising a connecting structure for fixing a first bonding member; and a force applying unit arranged on the bracket, the force applying unit being used to apply a force to a second bonding member so that the first bonding member is separated from the second bonding member.

[0006] According to one embodiment of the present invention, the bracket includes: a top plate extending along a first direction and a support member supporting the top plate above the bottom plate, the support member is arranged on the bottom plate, the fixing unit is arranged on the support member, and the force applying unit is arranged on the top plate.

[0007] According to one embodiment of the present invention, there are multiple brackets, and the multiple brackets are arranged along the second direction. Two brackets located on both sides of the multiple brackets are provided with the fixing unit, and the fixing unit includes a fixing bar extending along the first direction. The connecting structure includes a fixing hole opened on the fixing bar, and the fixing hole extends along the second direction. The fixing unit also includes a fastener for cooperating with the fixing hole.

[0008] According to one embodiment of the present invention, the fixing unit also includes a fixing plate that can slide along the fixing bar, the fixing plate is arranged vertically, and a fixing groove is formed in the part of the fixing plate located below the fixing bar, and the groove depth direction of the fixing groove is parallel to the extension direction of the fixing hole.

[0009] According to one embodiment of the present invention, the force-applying unit includes: a sleeve and a sleeve rod sleeved in the sleeve, the sleeve is connected to the top plate, the sleeve rod extends in a vertical direction, a pressure plate is provided at the lower end of the sleeve rod, and a receiving portion is provided at the portion of the sleeve rod located above the top plate for receiving a weight member.

[0010] According to an embodiment of the present invention, the friction force between the sleeve and the sleeve rod is equal to the gravity of the sleeve rod; and / or the weight member is a weight.

[0011] According to an embodiment of the present invention, a long slot extending along the first direction is formed on the top plate, the sleeve passes through the long slot, the sleeve is provided with a mounting portion, and the mounting portion is mounted to the top plate.

[0012] According to an embodiment of the present invention, a plurality of connection holes arranged along the second direction are formed on the bottom plate, and the bracket is mounted to the bottom plate through the connection holes.

[0013] According to an embodiment of the present invention, the adhesion force testing device further includes: a plurality of elastic members arranged on the bottom plate and a buffer plate supported by the plurality of elastic members.

[0014] According to one embodiment of the present invention, the elastic member includes a guide rod and a spring sleeved on the guide rod, the guide rod is inserted into the buffer plate, an abutment portion is formed on the guide rod, and the spring is extended and retracted between the buffer plate and the abutment portion; and / or a sliding groove extending along the second direction is formed on the bottom plate, and a sliding block is provided on the elastic member.

[0015] In the fitting force testing device according to the embodiment of the present invention, the first fitting part of the workpiece to be tested is fixed by the fixing unit, and the force applying unit applies a force to the second fitting part of the workpiece, so that the first fitting part and the second fitting part are separated, and the fitting force between the first fitting part and the second fitting part can be obtained based on the force applied by the force applying unit during separation. In addition, the fixing unit can only fix the first fitting part without applying an additional fixing or connecting force between the first fitting part and the second fitting part, so as not to affect the separation process, and accordingly not interfere with the detection result, and the detection accuracy is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of a fitting force testing device according to an exemplary embodiment of the present invention is shown;

[0018] Figure 2 A schematic diagram showing a base plate, a support member and a fixing unit according to an exemplary embodiment of the present invention is shown;

[0019] Figure 3 A schematic diagram of a force applying unit according to an exemplary embodiment of the present invention is shown;

[0020] Figure 4 A schematic diagram showing a force applying unit in a certain state according to an exemplary embodiment of the present invention is shown;

[0021] Figure 5 A schematic diagram showing a force applying unit in another state according to an exemplary embodiment of the present invention;

[0022] Figure 6 A schematic diagram showing the installation of a force applying unit on a top plate according to an exemplary embodiment of the present invention is shown;

[0023] Figure 7 A schematic diagram showing a support member in a certain state according to an exemplary embodiment of the present invention;

[0024] Figure 8 A schematic diagram showing a supporting member in another state according to an exemplary embodiment of the present invention;

[0025] Fig. 9 A schematic diagram showing a bonding force testing device in a certain state according to an exemplary embodiment of the present invention is shown;

[0026] Fig.10 A schematic diagram showing a bonding force testing device in another state according to an exemplary embodiment of the present invention is shown;

[0027] Fig.11 A schematic diagram showing a test of a workpiece by a bonding force testing device according to an exemplary embodiment of the present invention;

[0028] Fig.12 A schematic diagram showing a bonding force testing device according to an exemplary embodiment of the present invention testing another workpiece;

[0029] Fig.13 A schematic diagram showing an elastic member and a buffer plate in a certain state according to an exemplary embodiment of the present invention;

[0030] Fig.14 A schematic diagram showing an elastic member and a buffer plate in another state according to an exemplary embodiment of the present invention;

[0031] Fig.15 A schematic diagram showing the separation of the buffer plate from the bottom plate according to an exemplary embodiment of the present invention is shown;

[0032] Fig.16 A schematic diagram showing a buffer plate installed to a base plate according to an exemplary embodiment of the present invention is shown. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0034] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0035] Figure 1 A schematic diagram of a bonding force testing device 100 according to an exemplary embodiment of the present invention is shown. Figure 1 The bonding force testing device 100 includes: a base plate 10; a bracket 20 arranged on the base plate 10; a fixing unit 30 arranged on the bracket 20, the fixing unit 30 includes a connecting structure for fixing the first bonding member 1; and a force applying unit 40 arranged on the bracket 20, the force applying unit 40 is used to apply a force to the second bonding member 2, so that the first bonding member is separated from the second bonding member.

[0036] In the adhesion testing device 100 according to an embodiment of the present invention, the number of the brackets 20 can be at least two, and the fixing units 30 of different brackets 20 are arranged relatively, and the fixing units 30 have a transverse connection structure, so that the first fitting piece 1 of the workpiece to be tested can be fixed in the transverse direction by the fixing unit, and the fixing unit 30 can fix the first fitting piece 1 from two opposite sides. The connection structure can be a connecting hole, and the first fitting piece 1 forms a transverse matching hole, and is fixed by inserting a fastener such as a bolt into the connecting hole and the matching hole, or the first fitting piece 1 forms a transverse plug-in piece, and the plug-in piece is inserted into the connecting hole for matching. The connection structure can be a plug-in piece, and the first fitting piece 1 forms a transverse matching hole, and the plug-in piece is inserted into the matching hole. In the above-listed connection and fixing situations, the first fitting piece 1 is fixed by the connection of the side. In other embodiments, the connection structure can be an adhesive member for bonding the top surface of the first fitting piece 1, and the first fitting piece 1 is fixed by the connection of the top surface. In this embodiment, the number of the brackets 20 can be one or more. In the embodiment of the present invention, the fixing unit 30 only fixes the first adhesive member 1, and does not apply an additional fixing or connecting force between the first adhesive member 1 and the second adhesive member 2, so as not to affect the separation process and accordingly not interfere with the detection result. The first adhesive member 1 and the second adhesive member 2 can each be any one of a display screen and a touch screen. Wherein, when the first adhesive member 1 needs to form a matching hole, the first adhesive member 1 is preferably a display screen, and the display screen is more convenient to form a horizontal matching hole.

[0037] The force-applying unit 40 applies a vertical force to the second fitting member 2 of the workpiece to be measured, so that the first fitting member 1 and the second fitting member 2 are separated, and the fitting force between the first fitting member 1 and the second fitting member 2 can be obtained based on the force applied by the force-applying unit 40. The second fitting member 2 has an outwardly extending portion relative to the first fitting member 1, so that the force-applying unit 40 only applies force to the second fitting member 2 without affecting the first fitting member 1. The outwardly extending portion can be a part of the second fitting member 2 itself, or can be a portion additionally joined to the second fitting member 2. Accordingly, in the horizontal direction, the force-applying unit 40 is closer to the side of the base plate 10 relative to the fixing unit 30 to match the outwardly extending portion. That is, the fixing unit 30 and the force-applying unit 40 are spaced apart in the horizontal direction, and the force-applying unit 40 is closer to the outside of the base plate 10 relative to the fixing unit 30.

[0038] In an embodiment of the invention, at least two brackets 20 are provided, each bracket 20 is provided with a force-applying unit 40, and each bracket 20 can be provided with a plurality of force-applying units 40, so that a plurality of force-applying units 40 can be used to perform force detection from a plurality of different positions, force can be applied evenly, and the first bonding member 1 and the second bonding member 2 can be completely separated, so that the overall bonding force between the first bonding member 1 and the second bonding member 2 can be obtained, and the detection accuracy is good.

[0039] In one embodiment of the present invention, the bracket 20 includes: a top plate 22 extending along a first direction X and a support member 24 supporting the top plate 22 above the bottom plate 10, the support member 24 is arranged on the bottom plate 10, the fixing unit 30 is arranged on the support member 24, and the force applying unit 40 is arranged on the top plate 22. The support member 24 is arranged in the vertical direction, and each bracket 20 may include two support members 24 arranged opposite to each other, the two support members 24 are arranged at both ends of the top plate 22, and the support member 24 may be fixedly connected to the top plate 22. One or more force applying units 40 are arranged on the top plate 22, and the fixing unit 30 may be arranged on the support member 24, for example, connected between the two support members 24, and the fixing unit 30 may be located below the top plate 22. Of course, in other embodiments, the fixing unit 30 may also be arranged on the top plate 22.

[0040] Continue to refer Figure 1 , the number of the brackets 20 is multiple, and the multiple brackets 20 are arranged along the second direction Y, and the first direction X and the second direction Y can be two directions perpendicular to each other on the horizontal plane. Two brackets 20 located on both sides of the multiple brackets 20 are both provided with a fixing unit 30, and the fixing unit 30 includes a fixing bar 32 extending along the first direction X, and the connection structure includes a fixing hole 33 opened on the fixing bar 32, and the fixing hole 33 extends along the second direction Y. The fixing unit 30 also includes a fastener for matching with the fixing hole 33. The fixing bar 32 is connected between the two support members 24, and a matching hole matching with the fixing hole 33 is provided on the first fitting member 1. The matching hole also extends along the second direction Y and is opened on the side of the first fitting member 1. The fastener passes through the fixing hole 33 and the matching hole to fix the first fitting member 1 to the fixing bar 32, and the fixing bars 32 on both sides firmly fix the first fitting member 1 from opposite sides. In an embodiment of the present invention, the first fitting member 1 is a display screen, and matching holes are easily formed thereon. There can be two fixing strips 32 , which are arranged on two brackets 20 . The two fixing strips 32 are located on the same horizontal plane. Each fixing strip 32 has a plurality of fixing holes 33 . Two different fixing holes 33 can fix different first fitting members 1 .

[0041] refer to Figure 1 to Figure 2The fixing unit 30 further includes a fixing plate 34 that can slide along the fixing strip 32. The fixing plate 34 is arranged in the vertical direction. The fixing plate 34 forms a fixing groove 35 at the portion below the fixing strip 32. The groove depth direction of the fixing groove 35 is parallel to the extension direction of the fixing hole 33. When fixing the first fitting 1, if the matching hole on the first fitting 1 cannot be completely aligned with the fixing hole 33 on the fixing strip 32, the fixing plate 34 can be slid to align the fixing groove 35 on it with the matching hole on the first fitting 1 for installation and fixing. The first fitting 1 can be fixed and installed by passing a fastener through the fixing groove 35 and the matching hole. Multiple fixing grooves 35 can be arranged linearly on each fixing plate 34.

[0042] refer to Figure 1 and Figure 3 The force applying unit 40 includes: a sleeve 44 and a sleeve rod 46 sleeved in the sleeve 44, the sleeve 44 is connected to the top plate 22, the sleeve rod 46 extends in the vertical direction, a pressure plate 47 is provided at the lower end of the sleeve rod 46, and a receiving portion 48 is provided at the portion of the sleeve rod 46 located above the top plate 22, which is used to receive a weighting member 49. The sleeve 44 is fixed on the top plate 22, and the axis of the sleeve 44 is arranged in the vertical direction, that is, the axis direction of the sleeve 44 is perpendicular to the plane where the top plate 22 is located. The sleeve 44 is provided with a mounting portion 42, which is mounted on the top plate 22, and the mounting portion 42 can be a structure extending outward from the sleeve 44, such as a flange. The mounting portion 42 can be a plate-like structure with an opening. The mounting portion 42 is mounted to the top plate 22, for example, by threaded engagement. The pressure plate 47 can be fixedly connected to the sleeve rod 46. The receiving portion 48 can be in the form of a boss, and the weighting member 49 can be passed through the sleeve rod 46 and abutted by the receiving portion 48. By arranging the weighting member 49 on the sleeve rod 46, the weight of the sleeve rod 46 can be increased, so that the sleeve rod 46 slides downward under the action of gravity, and then the pressing plate 47 pushes the second fitting member 2, so that the second fitting member 2 is separated from the first fitting member 1. The weighting member 49 can be a weight, and the applied weight can be directly understood.

[0043] In the embodiment of the present invention, the sleeve 44 and the sleeve rod 46 are tightly matched, and the friction between the sleeve 44 and the sleeve rod 46 is equal to the weight of the sleeve rod 46. Therefore, when the weight member 49 is not provided, the gravity and friction force on the sleeve rod 46 cancel each other out. When the weight member 49 is provided, the force on the second fitting member 2 comes directly from the gravity of the weight member 49, so that the total mass of the weight member 49 on the sleeve rod 46 is the fitting force between the first fitting member 1 and the second fitting member 2, and the measurement is simple and accurate. Figures 4 to 5 The height of the pressing plate 47 can be adjusted by simply pulling the sleeve rod 46 to move in the sleeve 44.

[0044] refer to Figure 3 and Figure 6, a long slot 23 extending along the first direction X is formed on the top plate 22, a sleeve 44 passes through the long slot 23, and the mounting portion 42 is blocked outside the long slot 23. The sleeve 44 can select different passing positions in the long slot 23, and the mounting portion 42 is correspondingly installed at different positions of the top plate 22, thereby changing the setting position of the force unit 40 along the first direction X to adapt to workpieces to be measured of different sizes or specifications. A plurality of threaded holes can be provided on the top plate 22, and the mounting portion 42 can be installed on the top plate 22 through the threaded holes. A plurality of threaded holes can be provided around the long slot 23. In an embodiment of the present invention, two long slots 23 are provided on each top plate 22, and a fixed mounting slot is provided between the two long slots 23. At least three force units 40 can be provided on each top plate 22, and the middle force unit 40 is installed through the fixed mounting slot, and its mounting position is fixed. The force units 40 on both sides can select different installation positions in the long slot 23. As Figure 6 As shown, the multiple force-applying units 40 can be arranged more dispersedly or more closely together to accommodate larger and smaller workpieces to be measured. For example, when adjusting the position of the force-applying unit 40, it is necessary to loosen the bolts, and then move the mounting portion 42 toward the direction close to the two end supports 24, so that the distance between the two mounting portions 42 on the same top plate 22 increases, thereby increasing the distance between the mounting portions 42 on the same top plate 22, and then fix the mounting portion 42 on the top plate 22 by bolts.

[0045] In the embodiment of the present invention, the bracket 20 can be installed at different positions on the bottom plate 10 along the second direction Y. Figure 7 A plurality of connection holes 12 arranged along the second direction Y are formed on the bottom plate 10, and the bracket 20 is mounted to the bottom plate 10 through the connection holes 12, so that different connection holes 12 can be selected to mount the support member 24 of the bracket 20. In other embodiments, the bracket 20 can be slidably connected to the bottom plate 10. Figures 7 and 8 , the plurality of support members 24 can be arranged relatively dispersedly or relatively closely together along the second direction Y. For example, when adjusting the position of the bracket 20, it is necessary to loosen the bolts on the support member 24 of the bracket 20, and then move the support member 24 of the bracket 20 away from the other bracket 20, so that the distance between the two brackets 20 is also increased, and then fix the support member 24 to the bottom plate 10 by bolts. Figures 9 and 10 The multiple brackets 20 and the fixing units 30 and the force applying units 40 thereon can be arranged relatively dispersedly or relatively gathered along the second direction Y to adapt to workpieces to be measured of different sizes. Fig.11 The adhesion test device 100 is used to test the adhesion between a 12.1-inch display screen and a touch screen. Fig.12 The adhesion test device 100 is used to test the adhesion between a 22-inch display screen and a touch screen.

[0046] refer to Figures 13 to 16 In the embodiment of the present invention, the adhesion test device 100 further includes: a plurality of elastic members 50 disposed on the bottom plate 10 and a buffer plate 52 supported by the plurality of elastic members 50. Thus, in the process of pushing the second adhesive member 2 to separate from the first adhesive member 1, the second adhesive member 2 can be buffered, and can be pushed and separated more smoothly, making the separation process more uniform, which is conducive to more accurate determination of the overall adhesion force between the first adhesive member 1 and the second adhesive member 2. The buffer plate 52 is arranged below the fixing unit 30.

[0047] The elastic member 50 may include a guide rod 51 and a spring 53 sleeved on the guide rod 51, the guide rod 51 is inserted into the buffer plate 52, an abutment portion 55 is formed on the guide rod 51, and the spring 53 is extended and retracted between the buffer plate 52 and the abutment portion 55. The guide rod 51 may be a threaded rod, on which a nut is threadedly connected as the abutment portion 55. The guide rod 51 may vertically pass through the buffer plate 52, and the buffer plate 52 may move up and down along the guide rod 51. The first end of the spring 53 abuts against the abutment portion 55, and the second end of the spring 53 abuts against the lower side of the buffer plate 52.

[0048] The bottom plate 10 is formed with a slide groove 14 extending along the second direction Y, and the elastic member 50 is provided with a slider 57. The slider 57 is specifically provided at the lower end of the guide rod 51. The slider 57 slides along the slide groove 14, so that the elastic member 50 drives the buffer plate 52 to be provided at different positions on the bottom plate 10. By providing the slider 57 and the slide groove 14, when the bracket 20 and the fixing unit 30 are adjusted, it can be ensured that the buffer plate 52 can effectively buffer the falling second fitting member 2.

[0049] In one embodiment, when the bonding force testing device 100 is used for testing, the bonded workpiece to be tested is first placed between the two brackets 20, and the first bonding piece 1 is located above the second bonding piece 2, and the matching hole of the first bonding piece 1 is opposite to the fixing hole 33 on the fixing strip 32, and then the first bonding piece 1 is fixed to the fixing strip 32 with a fastener, and then the pressing plate 47 of the force applying unit 40 is abutted against the upper side edge of the second bonding piece 2. Start the measurement, gradually add weights to the sleeve rod 46 until the first bonding piece 1 and the second bonding piece 2 are separated. At this time, the total mass of the weights on the sleeve rod 46 is the bonding force between the first bonding piece 1 and the second bonding piece 2.

[0050] The adhesion force testing device 100 of the present invention can add weights to measure the adhesion force between the display screen and the touch screen; multiple brackets 20 can be provided and multiple force applying units 40 can be provided on each bracket 20, so that the force applying units 40 can be distributed along the four sides of the touch screen, and apply forces from multiple different positions around the touch screen to ensure that the display screen and the touch screen are evenly separated, and measure the overall adhesion force between the two; only the display screen can be fixed without generating additional fixing or connecting effects between the display screen and the touch screen, so as not to interfere with the separation process and ensure the accuracy of the test results; by providing a buffer structure including a buffer plate 52 and an elastic member 50, a buffering effect can be provided in the process of pushing the touch screen, ensuring that the display screen and the touch screen are smoothly separated and improving the measurement results; the adhesion force testing device 100 can be adjusted in length, width and height according to the specifications and sizes of the display screen and the touch screen, and is flexible to use and has good applicability.

[0051] It should be particularly pointed out that the various components or steps in the above-mentioned embodiments can be cross-linked, replaced, added, or deleted with each other. Therefore, the combinations formed by these reasonable arrangements and combinations should also fall within the scope of protection of the present invention, and the scope of protection of the present invention should not be limited to the embodiments.

[0052] The above are exemplary embodiments disclosed in the present invention. The order disclosed in the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope (including claims) disclosed in the embodiments of the present invention is limited to these examples. Various changes and modifications may be made without departing from the scope defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0053] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A bonding force testing device, comprising: Base plate; A bracket disposed on the bottom plate; A fixing unit provided on the bracket, the fixing unit comprising a connecting structure for fixing the first fitting; as well as a force applying unit disposed on the bracket, the force applying unit being used to apply a force to the second fitting member so that the first fitting member is separated from the second fitting member; The bracket comprises: a top plate extending along a first direction and a support member supporting the top plate above the bottom plate, the support member is arranged on the bottom plate, the fixing unit is arranged on the support member, and the force applying unit is arranged on the top plate; there are a plurality of brackets, and the plurality of brackets are arranged along a second direction; The force applying unit comprises: a sleeve and a sleeve rod sleeved in the sleeve, the sleeve is connected to the top plate, the sleeve rod extends in a vertical direction, a pressing plate is provided at the lower end of the sleeve rod, and a receiving portion is provided at a portion of the sleeve rod located above the top plate for receiving a weighting member; The friction force between the sleeve and the sleeve rod is equal to the weight of the sleeve rod.

2. The device according to claim 1, characterized in that Two of the multiple brackets located on both sides are provided with the fixing unit, and the fixing unit includes a fixing strip extending along the first direction, the connecting structure includes a fixing hole opened on the fixing strip, and the fixing hole extends along the second direction, and the fixing unit also includes a fastener for cooperating with the fixing hole.

3. The device according to claim 2, characterized in that The fixing unit further comprises a fixing plate which can slide along the fixing strip, the fixing plate is arranged in a vertical direction, a fixing groove is formed at a portion of the fixing plate below the fixing strip, and a groove depth direction of the fixing groove is parallel to an extension direction of the fixing hole.

4. The device according to claim 1, characterized in that The weighted member is a weight.

5. The device according to claim 1, characterized in that A long slot extending along the first direction is formed on the top plate, the sleeve passes through the long slot, and the sleeve is provided with a mounting portion, and the mounting portion is mounted to the top plate.

6. The device according to claim 1, characterized in that A plurality of connection holes arranged along the second direction are formed on the bottom plate, and the bracket is mounted to the bottom plate through the connection holes.

7. The device according to claim 1, characterized in that Also includes: A plurality of elastic members are disposed on the bottom plate, and a buffer plate is supported by the plurality of elastic members.

8. The device according to claim 7, characterized in that The elastic member comprises a guide rod and a spring sleeved on the guide rod, the guide rod is inserted into the buffer plate, an abutment portion is formed on the guide rod, and the spring is extended and retracted between the buffer plate and the abutment portion.

9. The device according to claim 7, characterized in that A sliding groove extending along the second direction is formed on the bottom plate, and a sliding block is provided on the elastic member.

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