Buckle type middle frame installation jig

Abstract

The utility model discloses a buckle type middle frame installation jig which comprises a platform, a first pressing assembly and two second pressing assemblies, and the platform is provided with a containing groove used for containing a back plate and a middle frame. The first pressing assembly comprises a first pressing frame and a first pressing module mounted on the first pressing frame, and the first pressing frame is rotationally mounted on the platform and is close to the sky side of the middle frame; the second press-fit assembly comprises second press-fit frames and second press-fit modules installed on the second press-fit frames, the two second press-fit frames are rotationally installed on the platform and are close to the left side and the right side of the middle frame respectively, and when the back plate and the middle frame are sequentially placed in the containing groove, the first press-fit frames and the second press-fit frames are pressed downwards, and the back plate and the middle frame are pressed downwards; the first pressing module can act on the sky side of the middle frame, and the two second pressing modules can act on the left side and the right side of the middle frame correspondingly so that the middle frame can be connected to the back plate in a clamped mode. When the buckle type middle frame mounting jig is used for pressing, the product quality and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixture structures, in particular to a snap-on middle frame installation fixture. Background Art

[0002] With the continuous increase in labor costs, the production and manufacturing costs of labor-intensive enterprises such as television production are naturally rising. According to the business plan of the Display Technology Division and the implementation of extreme cost reduction, the TV products launched in the existing television industry have multiple elastic clips on the left / right / top sides of the back panel of the TV, and the middle frame is correspondingly provided with multiple clips. The elastic clips on the back panel are snapped into the clips of the middle frame to achieve an assembly connection between the two. The snap fit between the middle frame and the back panel must be pressed into place, and the process requirements are extremely high. Specifically, the back panel is placed flat manually, and then the middle frame is placed on the back panel and pressed by hand, and then one hand supports the lower edge of the back panel, and the other hand applies a certain force to the middle frame from top to bottom to complete the assembly. Since screws and other components need to be installed between the ground side of the back panel and the ground side of the middle frame, the ground side direction of the middle frame can be ignored when assembling the middle frame on the back panel.

[0003] However, manually fixing the middle frame to the back panel generally requires two people, which is time-consuming and labor-intensive. In addition, manual pressing cannot guarantee that each clip head can be pressed into place, and uniform force cannot be guaranteed. Long-term operation can easily cause palm injuries. Utility Model Content

[0004] The utility model aims to provide a snap-on middle frame installation fixture to solve the technical problems that in the existing television production, it generally takes two people to manually fix the middle frame on the back plate, which is time-consuming and labor-intensive, and manual pressing cannot guarantee that each clip head can be pressed into place with the clip position, and cannot ensure uniform force, and long-term operation is prone to cause palm injuries.

[0005] The utility model provides a snap-on middle frame installation fixture, comprising:

[0006] A platform, wherein the platform is provided with a receiving groove for receiving the back plate and the middle frame;

[0007] A first pressing assembly, the first pressing assembly comprising a first pressing frame and a first pressing module installed on the first pressing frame, the first pressing frame being rotatably installed on the platform and disposed close to the top side of the middle frame;

[0008] Two second pressing assemblies, the second pressing assemblies include a second pressing frame and a second pressing module installed on the second pressing frame, the two second pressing frames are rotatably installed on the platform, the two second pressing frames are respectively arranged close to the left and right sides of the middle frame, when the back plate and the middle frame are placed in the accommodating groove in turn, by pressing down the first pressing frame and the second pressing frame, the first pressing module can act on the top side of the middle frame, and the two second pressing modules can respectively act on the left and right sides of the middle frame to clamp the middle frame on the back plate.

[0009] Furthermore, the platform includes a table top and a pad protruding from the table top, the accommodating groove is arranged on the pad top, and the first pressing frame and the second pressing frame are both rotatably mounted on the table top.

[0010] Furthermore, the first pressing module and the second pressing module each include a pressing plate and a pressing strip protruding from the pressing plate, and each of the pressing plates is respectively installed on the corresponding first pressing frame and the second pressing frame. When the first pressing frame and the second pressing frame are pressed down, the pressing strips in the first pressing module and the second pressing module first contact the middle frame, and when the middle frame is clamped on the back plate, the pressing plate abuts against the pad, and the pressing strip abuts against the middle frame.

[0011] Furthermore, the pad is also provided with two grooves for human hands to insert into, the grooves extend from the inner wall of the accommodating groove to the outer wall of the pad, and the two grooves are respectively arranged near the left and right sides of the middle frame.

[0012] Furthermore, the platform also includes a reinforcing rib group, which includes two oppositely arranged first reinforcing ribs and two oppositely arranged second reinforcing ribs, the two side ends of the first reinforcing ribs are respectively connected to the two side ends of the second reinforcing ribs, and the first reinforcing ribs and the second reinforcing ribs are both fixed to the bottom of the platform.

[0013] Furthermore, the first pressing frame and the second pressing frame each include a handle, a rotating shaft and two support seats, the two support seats are both fixed on the platform, the two ends of the rotating shaft are respectively connected to the two support seats, the handle is installed on the rotating shaft, and the handle can rotate relative to the support seat through the rotating shaft, and the first pressing module and the second pressing module are both connected to the corresponding handles.

[0014] Furthermore, the handle includes a plurality of connecting rods and two oppositely arranged bending plates, the two ends of the connecting rods are respectively connected to the two bending plates, the bending plates include a first support plate, a connecting plate and a second support plate arranged parallel to the first support plate, one end of the connecting plate is connected to the first support plate, and the other end is connected to the second support plate, the first support plate is connected to the rotating shaft, and the first pressing module and the second pressing module are both connected to the corresponding two connecting plates.

[0015] Furthermore, the snap-on middle frame installation fixture further includes at least one first fastener, the first pressing module is provided with at least one first threaded hole, the first pressing frame is provided with at least one first strip hole, and the first fastener passes through the first strip hole and is connected to the first threaded hole; and / or,

[0016] The snap-on middle frame installation fixture also includes at least one second fastener, the second pressing module is provided with at least one second threaded hole, the second pressing frame is provided with at least one second strip hole, and the second fastener passes through the second strip hole and is connected to the second threaded hole.

[0017] Furthermore, the platform is also provided with a plurality of avoidance grooves respectively matched with the protruding parts in the back plate, and the avoidance grooves are recessed on the inner wall of the accommodating groove.

[0018] Furthermore, the snap-on middle frame installation fixture also includes an elastic pad, and the elastic pad is installed in the accommodating groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model adopts a snap-on middle frame installation jig to replace the previous pure manual work in the process of clamping the middle frame to the back plate. When the snap-on middle frame installation jig is used for pressing, the middle frame is evenly stressed, and the middle frame can be stably clamped to the back plate and pressed into place. The assembly is more reliable, the production defect rate can be reduced, and labor can be reduced. One person can quickly clamp the middle frame to the back plate, which greatly saves assembly time, can improve the quality of pressed products and work efficiency, saves time and labor, and will not cause damage to the palms during long-term operation. It is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a snap-on middle frame installation fixture provided in an embodiment of the utility model;

[0022] Figure 2 for Figure 1 Exploded diagram of

[0023] Figure 3 The structure of the platform provided by the embodiment of the utility model is shown in FIG. Figure 1;

[0024] Figure 4 The structure of the platform provided by the embodiment of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 5 A schematic diagram of the structure of a second pressing assembly provided in an embodiment of the utility model;

[0026] Figure 6 A schematic diagram of the structure of a second pressing frame provided in an embodiment of the utility model;

[0027] Figure 7 A schematic diagram of the structure of a second pressing module provided in an embodiment of the utility model;

[0028] Figure 8 A schematic diagram of the structure of a snap-on middle frame installation fixture loaded with a middle frame and a back plate provided in an embodiment of the utility model;

[0029] Fig. 9 A schematic diagram of the structure of the middle frame provided by the embodiment of the utility model after being buckled onto the back plate;

[0030] Fig.10 for Fig. 9 A local enlarged schematic diagram of the middle A;

[0031] Fig.11 for Fig. 9 Exploded diagram of

[0032] Fig.12 for Fig.11 A partial enlarged schematic diagram of point B in the middle;

[0033] Fig.13 for Fig.11 A partial enlarged schematic diagram of point C in the middle;

[0034] Fig.14 An exploded view of the middle frame provided in the embodiment of the utility model after being buckled on the back plate and then turned over;

[0035] Fig.15 for Fig.14 A partial enlarged schematic diagram of point D in the middle;

[0036] Fig.16 for Fig.14 A partial enlarged schematic diagram of point E in the middle.

[0037] In the figure:

[0038] 10. back plate; 11. main back shell; 12. first annular side plate; 13. clamp head; 14. clamp plate; 15. protrusion; 20. middle frame; 21. annular bottom plate; 211. clamp hole; 22. second annular side plate; 221. clamping groove; 23. convex edge; 24. limit groove; 30. platform; 31. receiving groove; 32. table; 33. pad; 331. groove; 34. avoidance groove; 35. reinforcing rib group; 351. first reinforcing rib; 352. second reinforcing rib; 40. A pressing assembly; 41, a first pressing frame; 411, a first strip-shaped hole; 42, a first pressing module; 50, a second pressing assembly; 51, a second pressing frame; 511, a handle; 512, a rotating shaft; 513, a supporting seat; 514, a connecting rod; 515, a bending plate; 5151, a first supporting plate; 5152, a connecting plate; 5153, a second supporting plate; 516, a second strip-shaped hole; 52, a second pressing module; 521, a pressing plate; 522, a pressure strip; 523, a second threaded hole. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0040] See also Figures 1 to 3 ,as well as Figures 8 to 16 As shown, an embodiment of the utility model discloses a snap-on middle frame installation jig, which adopts a fixed limit and rotational pressing method to quickly complete the assembly between the back plate 10 and the middle frame 20. The snap-on middle frame installation jig can be used in the same industry such as TCL, Hisense, Konka, Skyworth and other television manufacturing industries or other assembly operations with similar processes. The snap-on middle frame installation jig may also be referred to as the installation jig hereinafter.

[0041] The snap-on middle frame installation fixture includes a platform 30, a first pressing component 40 and two second pressing components 50. The platform 30 is provided with a receiving groove 31 for accommodating the back panel 10 and the middle frame 20. When placing them specifically, the back panel 10 can be placed in the receiving groove 31 according to the direction, and then the middle frame 20 can be placed on the back panel 10 according to the direction. The first pressing component 40 includes a first pressing frame 41 and a first pressing module 42 installed on the first pressing frame 41. The first pressing frame 41 is rotatably installed on the platform 30. The first pressing module 42 can be adjusted and moved on the first pressing frame 41. The first pressing frame 41 is located next to the receiving groove 31. The first pressing frame 41 is arranged close to the side of the middle frame 20.

[0042] The second pressing assembly 50 includes a second pressing frame 51 and a second pressing module 52 installed on the second pressing frame 51. The two second pressing frames 51 are both rotatably installed on the platform 30. The accommodating groove 31 is located between the two second pressing frames 51. The two second pressing frames 51 are respectively arranged close to the left and right sides of the middle frame 20. The second pressing module 52 can be adjusted and moved on the second pressing frame 51. When the back plate 10 and the middle frame 20 are placed in the accommodating groove 31 in turn, by pressing down the first pressing frame 41 and the second pressing frame 51, the first pressing module 42 can act on the top side of the middle frame 20, and the two second pressing modules 52 can act on the left and right sides of the middle frame 20 respectively to clamp the middle frame 20 on the back plate 10. The middle frame 20 is evenly stressed. During the pressing process, the middle frame 20 can be pressed into place, and the assembly is more reliable. The production defect rate of the pressed product can be reduced, the assembly time is greatly saved, and the quality and work efficiency of the pressed product are improved.

[0043] In this embodiment, the back plate 10 includes a main back shell 11, a first annular side plate 12, a plurality of clamps 13 and a plurality of clamping plates 14. The main back shell 11 is located on the bottom wall of the accommodating groove 31. The first annular side plate 12 is vertically connected to the edge of the main back shell 11. The plurality of clamps 13 are spaced apart on the outer side wall of the first annular side plate 12. The plurality of clamping plates 14 are all located on the ground side of the back plate 10, and the plurality of clamping plates 14 are all convexly arranged on the side of the first annular side plate 12 away from the main back shell 11. The middle frame 20 is an annular structure. The middle frame 20 includes an annular bottom plate 21, a second annular side plate 22 and a plurality of The second annular side plate 22 is perpendicular to the outer edge of the annular bottom plate 21 and forms an "L" shaped structure therewith. The ridges 23 are convexly arranged on the annular bottom plate 21 at intervals. The second annular side plate 22 is laterally provided with a plurality of slots 221 arranged at intervals. The slots 221 can pass through the second annular side plate 22 or can be only recessed on the inner side of the second annular side plate 22. A plurality of holes 211 are vertically penetrated on the ground side of the annular bottom plate 21. The ridges 23, the annular bottom plate 21 and the second annular side plate 22 enclose a limiting groove 24 arranged in an annular manner.

[0044] When the middle frame 20 needs to be connected to the back plate 10, the first annular side plate 12 can be inserted into the annular limiting groove 24 first, and then the first pressing frame 41 and the second pressing frame 51 are pressed down until the clamping heads 13 on the sky side, left side and right side of the back plate 10 are respectively inserted into the clamping grooves 221. Since screws and other components need to be installed between the ground side of the back plate 10 and the ground side of the middle frame 20, the ground side direction does not need to consider the pressing problem in advance when the middle frame 20 is connected to the back plate 10, that is, the clamping plates 14 on the ground side do not necessarily need to be inserted into the clamping holes 211 respectively, and the clamping heads 13 on the ground side do not need to be inserted into the clamping grooves 221 respectively. Therefore, the connection of the middle frame 20 to the back plate 10 described in this embodiment is limited to the clamping heads 13 on the sky side, left side and right side of the back plate 10 are respectively inserted into the clamping grooves 221 on the sky side, left side and right side of the middle frame 20.

[0045] Please read further Figures 1 to 8 ,as well as Fig.15 In this embodiment, the platform 30 includes a table plate 32 and a pad 33 protruding from the top of the table plate 32, the accommodating groove 31 is arranged on the top of the pad 33, the first pressing frame 41 and the second pressing frame 51 are both rotatably installed on the table plate 32, the first pressing frame 41 is arranged close to the top side of the pad 33, and the two second pressing frames 51 are respectively located on the left and right sides of the pad 33, and the platform 30 is made of anti-static wood.

[0046] The platform 30 is further provided with a plurality of avoidance grooves 34 respectively matched with the protrusions 15 in the back plate 10 . The avoidance grooves 34 are recessed on the inner wall of the receiving groove 31 to facilitate placing the back plate 10 in the receiving groove 31 .

[0047] The first pressing module 42 and the second pressing module 52 have the same structure, and only differ in length. The first pressing module 42 and the second pressing module 52 both include a pressing plate 521 and a pressure strip 522 protruding from the pressing plate 521. Each pressing plate 521 is respectively installed on the corresponding first pressing frame 41 and the second pressing frame 51. The pressure strip 522 is located on a side of the pressing plate 521 away from the first pressing frame 41 or the second pressing frame 51. The pressure strip 522 is arranged close to the edge of the pressing plate 521. The pressure strip 522 and the pressing plate 521 are in an "L" shape. When the first pressing frame 41 is pressed down, the pressure strip 522 is located on a side of the pressing plate 521 away from the first pressing frame 41 or the second pressing frame 51. When the frame 41 and the two second pressing frames 51 are combined, the pressure strips 522 in the first pressing module 42 and the second pressing module 52 first contact the middle frame 20, and continue to press down the first pressing frame 41 and the two second pressing frames 51. When the middle frame 20 is clamped on the back plate 10, the pressure plate 521 abuts against the pad 33, and the pressure strips 522 abut against the middle frame 20. The travels of the first pressing module 42 and the second pressing module 52 are limited by the pad 33, which can effectively prevent the middle frame 20 from being crushed. The first pressing module 42 and the second pressing module 52 are both made of Teflon soft material.

[0048] The pad 33 is also provided with two grooves 331 for people to put their hands into. The grooves 331 extend from the inner wall of the accommodating groove 31 to the outer wall of the pad 33. The two grooves 331 are respectively arranged near the left and right sides of the middle frame 20. The back panel 10 or the middle frame 20 or the pressed product can be taken out of the accommodating groove 31 through the grooves 331.

[0049] In some embodiments, the platform 30 further includes a reinforcing rib group 35, which includes two first reinforcing ribs 351 and two second reinforcing ribs 352, both sides of the first reinforcing rib 351 are connected to the two sides of the two second reinforcing ribs 352, and both the first reinforcing rib 351 and the second reinforcing rib 352 are fixed to the bottom of the platform 32 to enhance the strength of the platform 32 and prevent the platform 30 from deforming over time. Of course, the reinforcing rib group 35 can also be other structures.

[0050] The snap-on middle frame installation fixture also includes an elastic pad, which is installed in the receiving groove 31. The elastic pad is a sponge pad. When the back plate 10 is placed, it protects the appearance of the back plate 10 from being scratched, and also prevents the back plate 10 from deformation.

[0051] In this embodiment, the first pressing frame 41 and the second pressing frame 51 have the same structure and only differ in length. The first pressing frame 41 and the second pressing frame 51 both include a handle 511, a rotating shaft 512 and two support seats 513. The two support seats 513 are fixed on the platform 30. The two ends of the rotating shaft 512 are respectively connected to the two support seats 513. The rotating shaft 512 can rotate on the support seats 513. The handle 511 is fixedly installed on the rotating shaft 512. The handle 511 can rotate relative to the support seat 513 through the rotating shaft 512. The first pressing module 42 and the second pressing module 52 are both connected to the corresponding handle 511. The first pressing frame 41 and the second pressing frame 51 are both made of aluminum alloy.

[0052] In some embodiments, the first pressing frame 41 and the second pressing frame 51 also include multiple bearings, the number of bearings is twelve, and the end of each rotating shaft 512 is installed on a support seat 513 through two bearings so that the rotating shaft 512 can rotate stably on the support seat 513.

[0053] Each handle 511 includes a plurality of connecting rods 514 and two oppositely arranged bending plates 515. There are two connecting rods 514, which are arranged in parallel. Both ends of the connecting rod 514 are connected to the two bending plates 515 respectively. The two bending plates 515 are fixedly connected to the rotating shaft 512. The bending plates 515 include a first support plate 5151, a connecting plate 5152 and a second support plate 5153 arranged parallel to the first support plate 5151. One end of the connecting plate 5152 is connected to the first support plate 5151, and the other end is connected to the second support plate 5153. The first support plate 5151 is connected to the rotating shaft 512. The first pressing module 42 and the second pressing module 52 are both connected to the corresponding two connecting plates 5152, and can be adjusted and moved along the length direction of the corresponding connecting plates 5152, so as to adjust the position of the first pressing module 42 and the second pressing module 52.

[0054] In some embodiments, the snap-on middle frame mounting fixture also includes at least one first fastener, the first pressing module 42 is provided with at least one first threaded hole, the first pressing frame 41 is provided with at least one first strip hole 411, the number of the first fastener, the first threaded hole and the first strip hole 411 are all two, specifically, the two first strip holes 411 are respectively penetrated on the two connecting plates 5152 of the first pressing frame 41, the first strip hole 411 is arranged along the length direction of the corresponding connecting plate 5152, and the first fastener passes through the first strip hole 411 and is connected to the first threaded hole, so that the first pressing module 42 can be adjusted relative to the first pressing frame 41 to adapt to the needs of middle frames 20 of different sizes.

[0055] In some embodiments, the snap-on middle frame installation fixture also includes at least one second fastener, the second pressing module 52 is provided with at least one second threaded hole 523, and the second pressing frame 51 is provided with at least one second bar hole 516. The number of second fasteners, second threaded holes 523 and second bar holes 516 in each second pressing assembly 50 is two. Specifically, the two second bar holes 516 are respectively penetrated on the two connecting plates 5152 of the second pressing frame 51, and the second bar holes 516 are arranged along the length direction of the corresponding connecting plates 5152. The second fastener passes through the second bar hole 516 and is connected to the second threaded hole 523, so that the second pressing module 52 can be adjusted relative to the second pressing frame 51 to adapt to the needs of middle frames 20 of different sizes.

[0056] Working principle of the snap-on midframe installation fixture:

[0057] Before the operation, the first pressing assembly 40 and the two second pressing assemblies 50 are first expanded outward, the back panel 10 is placed in the receiving groove 31 according to the direction, and then the middle frame 20 is placed on the back panel 10, wherein the first annular side plate 12 of the back panel 10 is inserted into the annular limiting groove 24 of the middle frame 20, and then the first pressing frame 41 and the two second pressing frames 51 are pressed down, and the clamping heads 13 on the sky side, left side and right side of the back panel 10 are respectively inserted into the corresponding clamping grooves 221 of the middle frame 20 to complete the pressing assembly of the product. Since screws and other components need to be installed between the ground side of the back panel 10 and the ground side of the middle frame 20, the ground side direction of the middle frame 20 can be ignored when the middle frame 20 is clamped on the back panel 10. Afterwards, the first pressing assembly 40 and the two second pressing assemblies 50 are expanded outward and reset. Finally, the two hands are respectively located at the two grooves 331 of the pad 33 to take the pressed product out of the receiving groove 31.

[0058] The main technical effects of the snap-on middle frame installation fixture are:

[0059] (1) The assembly between the back panel 10 and the middle frame 20 is quickly completed by adopting a fixed limit and rotation pressing method, which can effectively ensure that each clamping head 13 on the upper, left and right sides of the back panel 10 can be pressed into place with each clamping slot 221 on the middle frame 20 in one step without falling off, thereby greatly saving assembly time;

[0060] (2) Solve the problem that the middle frame 20 cannot be pressed onto the back plate 10 in one step during the manual pressing process, thereby causing the middle frame 20 to be scrapped;

[0061] (3) Effectively solve problems such as product process consistency and poor visual effects;

[0062] (4) Reduce employee fatigue, reduce production defect rate, and improve product quality and work efficiency;

[0063] (5) The technology can be applied to the TV manufacturing industry or other assembly operations with similar processes such as TCL, Hisense, Konka, and Skyworth.

[0064] To sum up, in the utility model, in the process of snap-on middle frame 20 being snapped onto the back plate 10, a snap-on middle frame installation jig is used to replace the previous pure manual operation. When the snap-on middle frame installation jig is used for pressing, the middle frame 20 is subjected to uniform force, and the middle frame 20 can be stably snapped onto the back plate 10 and pressed into place. The assembly is more reliable, the production defect rate can be reduced, and labor can be reduced. One person can quickly snap the middle frame 20 onto the back plate 10, which greatly saves assembly time, can improve product quality and work efficiency, save time and labor, and will not cause damage to the palms even if working for a long time. It is suitable for large-scale promotion.

[0065] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A snap-on middle frame installation fixture, characterized in that: include: A platform, wherein the platform is provided with a receiving groove for receiving the back plate and the middle frame; A first pressing assembly, the first pressing assembly comprising a first pressing frame and a first pressing module installed on the first pressing frame, the first pressing frame being rotatably installed on the platform and disposed close to the top side of the middle frame; Two second pressing assemblies, the second pressing assemblies include a second pressing frame and a second pressing module installed on the second pressing frame, the two second pressing frames are rotatably installed on the platform, the two second pressing frames are respectively arranged close to the left and right sides of the middle frame, when the back plate and the middle frame are placed in the accommodating groove in turn, by pressing down the first pressing frame and the second pressing frame, the first pressing module can act on the top side of the middle frame, and the two second pressing modules can respectively act on the left and right sides of the middle frame to clamp the middle frame on the back plate.

2. The snap-on middle frame installation fixture according to claim 1, characterized in that: The platform comprises a table top and a pad protruding from the table top, the accommodating groove is arranged on the pad top, and the first pressing frame and the second pressing frame are both rotatably mounted on the table top.

3. The snap-on middle frame installation fixture according to claim 2, characterized in that: The first pressing module and the second pressing module both include a pressing plate and a pressing strip protruding from the pressing plate, and each of the pressing plates is respectively installed on the corresponding first pressing frame and the second pressing frame. When the first pressing frame and the second pressing frame are pressed down, the pressing strips in the first pressing module and the second pressing module first contact the middle frame. When the middle frame is clamped on the back plate, the pressing plate abuts against the pad, and the pressing strip abuts against the middle frame.

4. The snap-on middle frame installation fixture according to claim 2, characterized in that: The pad is also provided with two grooves for human hands to insert into, the grooves extend through the inner wall of the accommodating groove to the outer wall of the pad, and the two grooves are respectively arranged near the left and right sides of the middle frame.

5. The snap-on middle frame installation fixture according to claim 2, characterized in that: The platform also includes a reinforcement rib group, which includes two oppositely arranged first reinforcement ribs and two oppositely arranged second reinforcement ribs, the two side ends of the first reinforcement ribs are respectively connected to the two side ends of the second reinforcement ribs, and the first reinforcement ribs and the second reinforcement ribs are both fixed to the bottom of the platform.

6. The snap-on middle frame installation fixture according to claim 1, characterized in that: The first pressing frame and the second pressing frame each include a handle, a rotating shaft and two support seats, the two support seats are both fixed on the platform, the two ends of the rotating shaft are respectively connected to the two support seats, the handle is installed on the rotating shaft, and the handle can rotate relative to the support seat through the rotating shaft, and the first pressing module and the second pressing module are both connected to the corresponding handles.

7. The snap-on middle frame installation fixture according to claim 6, characterized in that: The handle includes a plurality of connecting rods and two oppositely arranged bending plates, the two ends of the connecting rods are respectively connected to the two bending plates, the bending plates include a first support plate, a connecting plate and a second support plate arranged parallel to the first support plate, one end of the connecting plate is connected to the first support plate, and the other end is connected to the second support plate, the first support plate is connected to the rotating shaft, and the first pressing module and the second pressing module are both connected to the corresponding two connecting plates.

8. The snap-on middle frame installation fixture according to claim 1, characterized in that: The snap-on middle frame installation fixture further includes at least one first fastener, the first pressing module is provided with at least one first threaded hole, the first pressing frame is provided with at least one first strip hole, and the first fastener passes through the first strip hole and is connected to the first threaded hole; and / or, The snap-on middle frame installation fixture also includes at least one second fastener, the second pressing module is provided with at least one second threaded hole, the second pressing frame is provided with at least one second strip hole, and the second fastener passes through the second strip hole and is connected to the second threaded hole.

9. The snap-on middle frame installation fixture according to claim 1, characterized in that: The platform is also provided with a plurality of avoidance grooves respectively matched with the protruding parts in the back plate, and the avoidance grooves are recessed on the inner wall of the accommodating groove.

10. The snap-on middle frame installation fixture according to claim 1, characterized in that: The snap-on middle frame installation fixture also includes an elastic pad, and the elastic pad is installed in the accommodating groove.

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