Diffusion plate support back pressure device

Abstract

The invention relates to the technical field of display, in particular to a diffusion plate support pressure return device. Comprising a connecting rod mechanism which comprises at least two first connecting rods hinged to each other; the magnetic attraction mechanism is hinged to the connecting rod mechanism; wherein the magnetic attraction mechanism comprises an iron core, a coil and a power supply device, a mounting groove is formed in the iron core, the coil is arranged around the inner wall of the mounting groove, and a containing cavity used for containing the supporting structure of the diffusion plate support is formed in the coil; and the power supply device is electrically connected with the coil and is used for supplying power to the coil. According to the back pressure device for the diffusion plate support, the diffusion plate support is firmly pressed on the metal back plate according to the magnetic attraction principle, operation is convenient, the attraction force is large, and then the back pressure efficiency of the diffusion plate support can be improved.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a back-pressure device for a diffusion plate bracket. Background Art

[0002] The backlight module of a liquid crystal television mainly consists of a back panel, LED lights, a diffusion plate bracket, a diffusion plate, and optical films. The back panel is usually made of metal material. After fixing the diffusion plate bracket at a designated position on the back panel, the diffusion plate is assembled onto the back panel. The diffusion plate bracket is used to support the diffusion plate to prevent it from sagging.

[0003] In the traditional production process, manual operation by personnel is used to fix the diffusion plate bracket to the back panel by screwing or pressing with adhesive. For today's medium and large-sized televisions, the number of diffusion plate brackets is large, and the manual operation method is inefficient; to ensure the pressing effect, a pressing tool with a large counterweight is often required, the pressing time is long, the personnel load is large, and the situation of incomplete screwing or pressing may occur during long-term mechanical repeated operations. Summary of the Invention

[0004] To solve the above technical problems or at least partially solve the above technical problems, the present application provides a back-pressure device for a diffusion plate bracket.

[0005] The present application provides a back-pressure device for a diffusion plate bracket, which is used to press the diffusion plate bracket onto the back panel and includes:

[0006] A link mechanism, including at least two mutually hinged first links;

[0007] A magnetic attraction mechanism, hinged to the link mechanism;

[0008] Wherein, the magnetic attraction mechanism includes an iron core, a coil, and a power supply device. An installation groove is formed on the iron core, the coil is arranged around the inner wall of the installation groove, and a containing cavity for containing the support structure of the diffusion plate bracket is formed inside the coil;

[0009] The power supply device is electrically connected to the coil and is used to supply power to the coil.

[0010] In some embodiments, the magnetic attraction mechanism further includes a first housing, the interior of the first housing is hollow, and the upper end of the first housing is open to form a placement opening for placing the iron core. A magnetic attraction opening is formed at the lower end of the first housing, and the area of the magnetic attraction opening is smaller than the bottom area of the iron core.

[0011] In some embodiments, the magnetic attraction mechanism further includes a top cover, the top cover is arranged at the placement opening and is fixedly connected to the first housing to seal the iron core inside the first housing.

[0012] In some embodiments, two first connecting arms are provided on the outer sidewall of the first housing, the two first connecting arms are arranged oppositely, and two second connecting arms are arranged at corresponding positions of the top cover, and the second connecting arms are connected to the first connecting arms in one-to-one correspondence.

[0013] In some embodiments, the upper surface of the first connecting arm is lower than the upper end surface of the first housing, and a first positioning groove is opened downward at a position of the upper end surface of the first housing corresponding to the first connecting arm. The first positioning groove is opened from the upper end surface of the first housing to a position flush with the upper surface of the first connecting arm, and the second connecting arm is clamped in the first positioning groove.

[0014] In some embodiments, the width of the first positioning groove is equal to the width of the second connecting arm, and the depth of the first positioning groove is equal to the thickness of the second connecting arm.

[0015] In some embodiments, a convex platform protrudes upward on the inner wall at the lower end of the first housing, and the convex platform and the inner wall of the first housing together form a first clamping groove. The first clamping groove is arranged corresponding to the magnetic attraction port, and the iron core is embedded in the first clamping groove.

[0016] In some embodiments, the power supply device is arranged above the magnetic attraction mechanism and fixedly connected to the magnetic attraction mechanism, and the power supply device is connected to the coil through an electric connecting wire.

[0017] In some embodiments, the power supply device includes a second housing and a power supply arranged in the second housing. An installation hole is opened on the sidewall of the second housing, and the switch of the power supply extends out of the second housing from the installation hole. The switch is used to control the power supply to supply power to the coil.

[0018] In some embodiments, an electrical connection head is provided on the outer side surface of the iron core. When the iron core is embedded in the first clamping groove, the electrical connection head is located above the convex platform, and the electrical connection head is used to connect to the electrical connecting wire.

[0019] The technical solution provided by the embodiments of the present application has the following advantages compared with the prior art:

[0020] The backpressure device for the diffusion plate bracket provided by the embodiment of the present application can adjust the position of the magnetic attraction mechanism by using a linkage mechanism, and adjust the magnetic attraction mechanism to the position where the diffusion plate bracket is installed. A receiving groove is formed inside the coil. When the magnetic attraction mechanism moves to the installation position of the diffusion plate bracket, the receiving groove is corresponded to the support structure of the diffusion plate bracket, so that the support structure enters the receiving groove. Then, a power supply device is used to supply power to the coil, so that the iron core generates a magnetic force. Since the back plate is made of a metal material, the iron core generates a magnetic attraction force on the back plate, and presses the diffusion plate bracket and the back plate tightly together to achieve the backpressure on the diffusion plate bracket. This backpressure device for the diffusion plate bracket uses the magnetic attraction principle to firmly press the diffusion plate bracket on the metal back plate, which is convenient to operate and has a large suction force, thereby improving the efficiency of the backpressure on the diffusion plate bracket. Description of the Drawings

[0021] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of the backpressure device for the diffusion plate bracket according to the embodiment of the present application;

[0024] Figure 2 It is a schematic structural diagram of the magnetic attraction mechanism according to the embodiment of the present application;

[0025] Figure 3 It is an exploded view of the magnetic attraction mechanism and the diffusion plate bracket according to the embodiment of the present application;

[0026] Figure 4 It is a schematic structural diagram of the iron core and the first housing according to the embodiment of the present application;

[0027] Figure 5 It is a schematic structural diagram of the first housing according to the embodiment of the present application;

[0028] Figure 6 It is a top view of the first housing according to the embodiment of the present application;

[0029] Figure 7 It is a schematic structural diagram of the iron core according to the embodiment of the present application;

[0030] Figure 8 It is a schematic structural diagram of the top cover according to the embodiment of the present application;

[0031] Figure 9Schematic structural diagram of the diffusion plate bracket described in the embodiments of the present application;

[0032] Figure 10 Schematic structural diagram of the link mechanism described in the embodiments of the present application.

[0033] Wherein, 1. Link mechanism; 10. Spherical hinge joint; 11. First connecting rod; 12. Second connecting rod; 13. Ball bowl; 2. Power supply device; 3. Magnetic attraction mechanism; 30. First outer shell; 301. First connecting arm; 302. Placement opening; 303. Magnetic attraction opening; 304. Boss; 305. First positioning groove; 31. Top cover; 311. Second connecting arm; 32. Iron core; 320. Installation groove; 321. Electrical connection head; 4. Electrical connection wire; 5. Diffusion plate bracket; 51. Base; 52. Support structure; 521. Cross beam; 522. Support rod. Detailed implementation manners

[0034] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the solutions of the present application will be further described below. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to fully understand the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present application, rather than all the embodiments.

[0036] It should be noted that the directional indications (such as up, down, left, right, front, back...) in the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0037] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0038] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, when describing pipelines, the terms "connected" and "coupled" used in the present application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0039] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0040] To solve the problems in the traditional production process, such as low efficiency of manually applying back pressure to the diffusion plate bracket, long pressing time of the large counterweight pressing tooling, and incomplete pressing, the embodiments of the present application provide a back pressure device for the diffusion plate bracket.

[0041] Specifically, as Figures 1 to 10 shown, the embodiments of the present application provide a back pressure device for the diffusion plate bracket. Using this back pressure device for the diffusion plate bracket, the diffusion plate bracket 5 can be quickly and effectively pressed on the back plate.

[0042] The back pressure device for the diffusion plate bracket includes:

[0043] A link mechanism 1, including a first link with at least two ends hinged to each other;

[0044] A magnetic attraction mechanism 3, hinged to the link mechanism 1; by adjusting the angle of the link mechanism 1 and the angle between the link mechanism 1 and the magnetic attraction mechanism 3, the position of the magnetic attraction mechanism 3 can be adjusted to move the magnetic attraction mechanism 3 to a position corresponding to the diffusion plate bracket 5;

[0045] The magnetic attraction mechanism 3 includes an iron core 32, a coil, and a power supply device 2. An installation groove 320 with both ends open is formed on the iron core 32. The coil is arranged around the inner wall of the installation groove 320, and a receiving cavity for receiving the support structure 52 of the diffusion plate bracket 5 is formed inside the coil;

[0046] The power supply device 2 is electrically connected to the coil and is used to supply power to the coil. The iron core 32 and the coil together form an electromagnet, which generates magnetic force when energized.

[0047] Specifically, in some embodiments of the present application, the diffusion plate bracket 5 includes a base 51 and a support structure 52 disposed on the base 51. The support structure 52 includes an arched cross beam 521 and support rods 522. Both ends of the cross beam 521 are fixedly connected to the base 51, the middle part of the cross beam 521 arches away from the base 51, and the support rods 522 are connected to the middle part of the cross beam 521 in a direction perpendicular to the base 51. When the diffusion plate bracket 5 is installed, the base 51 is attached to the back plate. The diffusion plate bracket backpressure device provided by the embodiments of the present application provides pressure between the base 51 and the back plate to press the base 51 tightly against the back plate.

[0048] The diffusion plate bracket backpressure device provided by the embodiments of the present application can adjust the position of the magnetic attraction mechanism 3 by using the linkage mechanism 1, and adjust the magnetic attraction mechanism 3 to the position where the diffusion plate bracket 5 is installed. A receiving groove is formed inside the coil. When the magnetic attraction mechanism 3 moves to the installation position of the diffusion plate bracket 5, the receiving groove is aligned with the support structure 52 of the diffusion plate bracket 5, so that the support structure 52 enters the receiving groove. Then, the coil is powered by the power supply device 2 to make the iron core 32 generate magnetic force. Since the back plate is made of metal, the iron core 32 generates a magnetic attraction force on the back plate, pressing the diffusion plate bracket 5 and the back plate tightly together to achieve backpressure on the diffusion plate bracket 5. This diffusion plate bracket backpressure device uses the magnetic attraction principle to firmly press the diffusion plate bracket 5 on the metal back plate, which is convenient to operate and has a large suction force, thereby improving the efficiency of backpressure on the diffusion plate bracket 5.

[0049] It should be noted that the magnitude of the magnetic force generated by the iron core 32 is related to the number of turns of the coil winding. The more turns of the coil winding, the greater the magnetic force generated by the iron core 32 when energized, and the greater the suction force on the back plate. In order to ensure the size of the receiving cavity, that is, to ensure that the support structure 52 of the diffusion plate bracket 5 can be placed into the receiving cavity, the more turns of the coil winding, the larger the size of the iron core 32 will be, and then the overall size of the magnetic attraction mechanism 3 will be larger, which is not conducive to operation. Therefore, the number of turns of the coil winding needs to comprehensively consider the magnetic force generated by the iron core 32 and the overall size of the magnetic attraction mechanism 3. On the basis of ensuring that the magnetic force generated by the iron core 32 meets the requirements, the overall size of the magnetic attraction mechanism 3 should be reduced as much as possible to facilitate operation by the operator.

[0050] Furthermore, in some embodiments of the present application, the magnetic attraction mechanism 3 further includes a first housing 30. The interior of the first housing 30 is hollow, and the upper end of the first housing 30 is open to form a placement opening 302 for placing the iron core 32. A magnetic attraction opening 303 is provided at the lower end of the first housing 30, and the area of the magnetic attraction opening 303 is smaller than the bottom area of the iron core 32.

[0051] Specifically, the iron core 32 is in the shape of a rectangular block. The installation groove 320 penetrates from the upper surface of the iron core 32 to the lower surface. The shape and size of the installation groove 320 are related to the shape and size of the cross beam 521 on the diffusion plate bracket 5. In some embodiments of the present application, in order to enable the cross beam 521 to extend into the installation groove 320, the shape of the installation groove 320 is set as an oval.

[0052] The first outer shell 30 is in the shape of a rectangular shell structure. Its main function is to be arranged outside the iron core 32 to protect the iron core 32. The upper end of the first outer shell 30 is completely open, and the lower end has a partial lower end face. A magnetic attraction port 303 is provided at the lower end of the first outer shell 30. The area of the magnetic attraction port is smaller than the area of the upper open end of the first outer shell 30. The iron core 32 is placed into the interior of the first outer shell 30 from the placement port 302. After being placed, the lower surface of the iron core 32 fits against the inner wall of the lower end of the first outer shell 30. The lower end face of the first outer shell 30 plays a blocking role for the iron core 32 to prevent the iron core 32 from falling out from the magnetic attraction port 303.

[0053] Furthermore, in some embodiments of the present application, the magnetic attraction mechanism 3 further includes a top cover 31. The top cover 31 is arranged at the placement port 302 and is fixedly connected to the first outer shell 30 to seal the iron core 32 inside the first outer shell 30. When the coil is energized, the iron core 32 generates a magnetic force and exerts a suction force on the back plate, preventing the iron core 32 from being pushed out from the upper end of the first outer shell 30 due to the impact force when adsorbing to the back plate.

[0054] In some preferred embodiments, when the iron core 32 is placed inside the first outer shell 30 and the top end is sealed with the top cover 31, the upper end face of the iron core 32 fits against the top cover 31. The top cover 31 and the lower end face of the first outer shell 30 fix the iron core 32 inside the first outer shell 30, and even during the energization process of the coil, the iron core 32 will not move relatively.

[0055] Furthermore, in some embodiments of the present application, two first connecting arms 301 are provided on the outer side wall of the second outer shell. The two first connecting arms 301 are arranged oppositely. Two second connecting arms 311 are arranged at the corresponding positions of the top cover 31. The second connecting arms 311 are connected to the first connecting arms 301 in a one-to-one correspondence.

[0056] Specifically, the first connecting arm 301 protrudes from two opposite outer side surfaces of the second housing. A first connecting hole is provided on the first connecting arm 301, and a second connecting hole is provided at the corresponding position of the second connecting arm 311. A fastener is inserted into the first connecting hole and the second connecting hole to fixedly connect the first connecting arm 301 and the second connecting arm 311, thereby fixing the top cover 31 at the placement opening 302 of the first housing 30. In some preferred embodiments, the length of the top cover 31 is equal to the length of the placement opening 302, and the width of the top cover 31 is also the same as the width of the placement opening 302, so that the top cover 31 can exactly seal the placement opening 302.

[0057] It should be noted that the number of the first connecting arms 301 can also be set to three or more. When the number of the first connecting arms 301 is three, the three first connecting arms 301 are respectively arranged on three different outer side surfaces of the first housing 30.

[0058] Further, in some embodiments of the present application, the upper surface of the first connecting arm 301 is lower than the upper end surface of the first housing 30, and a first positioning groove 305 is downwardly opened at the position of the upper end surface of the first housing 30 corresponding to the first connecting arm 301. The first positioning groove 305 is opened from the upper end surface of the first housing 30 to a position flush with the upper surface of the first connecting arm 301, and the second connecting arm 311 is clamped in the first positioning groove 305.

[0059] The first positioning groove 305 can pre-position the top cover 31. When installing the top cover 31, the corresponding first connecting arm 301 is placed in the first positioning groove 305, and the position of the top cover 31 is pre-positioned without deviation. The first positioning groove 305 is engaged with the second connecting arm 311 to limit the movement of the top cover 31 in the plane parallel to the placement opening 302. A fastener is used to lock the first connecting arm 301 and the second connecting arm 311, which limits the movement and rotation of the top cover 31 in the direction perpendicular to the plane where the placement opening 302 is located.

[0060] The setting of the first positioning groove 305 can also quickly realize the positioning of the top cover 31 and the first housing 30 when installing the top cover 31, providing a reference benchmark for the installation of the top cover 31 and improving the assembly efficiency.

[0061] Further, in some embodiments of the present application, the width of the first positioning groove 305 is equal to the width of the second connecting arm 311, and the depth of the first positioning groove 305 is equal to the thickness of the second connecting arm 311.

[0062] Specifically, the first connecting arm 301 is disposed on two outer side surfaces of the first housing 30 along the length direction. The first connecting arm 301 is a convex structure formed on the outer side surface of the first housing 30 along the width direction. The first positioning groove 305 penetrates through the thickness direction of the first housing 30. The width of the first positioning groove 305 refers to the distance between the two side walls of the first positioning groove 305, and the depth of the first positioning groove 305 refers to the distance from the notch of the first positioning groove 305 to the bottom of the first positioning groove 305. In the embodiment of the present application, the first positioning groove 305 is opened from the upper end surface of the first housing 30 to a position flush with the first connecting arm 301. Then, the depth of the first positioning refers to the distance between the upper end surface of the first housing 30 and the upper end surface of the first connecting arm 301.

[0063] The width of the first positioning groove 305 is equal to the width of the second connecting arm 311, realizing the clamping connection between the first positioning groove 305 and the second connecting arm 311. The second connecting arm 311 can just be placed in the first positioning groove 305, and the first positioning groove 305 will generate a certain binding force on the second connecting arm 311, so that the second connecting arm 311 will not shake relatively in the first positioning groove 305, thereby realizing the effect of pre-positioning the top cover 31.

[0064] The depth of the first positioning groove 305 is equal to the thickness of the second connecting arm 311, ensuring that when the second connecting arm 311 is clamped in the first positioning groove 305, the upper surface of the second connecting arm 311 is flush with the upper end surface of the first housing 30. In some preferred embodiments, the thickness of the top cover 31 is equal to the thickness of the second connecting arm 311. When the top cover 31 is installed, the second connecting arm 311 is correspondingly clamped in the first positioning groove 305, and the top cover 31 is just embedded at the placement opening 302. The upper surface of the top cover 31 and the upper surface of the second connecting arm 311 are both flush with the upper end surface of the first housing 30, making the installation structure of the top cover 31 and the first housing 30 more regular and more compact, providing a good structural basis for the installation of the power supply device 2.

[0065] Further, in some embodiments of the present application, the length of the first housing 30 is greater than the length of the iron core 32, and the width of the first housing 30 is substantially equal to the width of the iron core 32. When the iron core 32 is placed inside the first housing 30, the two side walls of the iron core 32 along the width direction are attached to the two inner side walls of the first housing 30 along the width direction. In the length direction, one side wall of the iron core 32 is attached to the inner side wall of the first housing 30, and there is a certain distance between the other side wall of the iron core 32 and the inner side wall of the first housing 30. Therefore, a cavity is formed between the iron core 32 and the inner side wall of the first housing 30, and this cavity is used for routing. The electrical connection line 4 between the power supply device 2 and the coil is placed in this cavity.

[0066] Further, since a cavity is formed between the iron core 32 and the inner side wall of the first housing, only three side walls of the iron core 32 are in contact with the inner side wall of the first housing 30 to achieve restraint. Without adding a limiting structure, the iron core 32 can move along the length direction, which is not conducive to the stability of the overall structure.

[0067] Therefore, in some embodiments of the present application, a boss 304 is formed to protrude upward on the inner wall of the lower end of the first housing 30. The boss 304 and the inner side wall of the first housing 30 together enclose a first clamping groove, the first clamping groove is correspondingly arranged with the magnetic attraction port 303, and the area of the projection of the first clamping groove on the lower end surface of the first housing 30 is larger than the area of the magnetic attraction port 303, and the projection of the first clamping groove on the lower end surface of the first housing 30 completely covers the magnetic attraction port 303. Therefore, when the iron core 32 is placed in the first housing 30, the lower surface of the iron core 32 is in contact with the inner wall of the lower end surface of the first housing 30, and the groove wall of the first clamping groove is in contact with the side surface of the iron core 32, realizing clamping with the iron core 32 and fixing the iron core 32 in the first housing 30 to ensure that the iron core 32 does not move relatively.

[0068] Specifically, the lower end surface of the first housing 30 is a plate-like structure in the shape of a "hui" character. The outer edge of the "hui" character plate is connected to the lower end of the outer side wall of the first housing 30, and the inner edge of the "hui" character plate encloses the magnetic attraction port 303. The projection of the lower surface of the iron core 32 on the "hui" character plate completely covers the magnetic attraction port 303. Therefore, when the iron core 32 is placed in the first housing 30, the edge of the lower surface of the iron core 32 is located between the inner edge and the outer edge of the "hui" character plate. The "hui" character plate neither affects the support structure 52 of the diffusion plate bracket 5 from extending into the iron core 32 nor blocks the iron core 32 to prevent the iron core 32 from falling from the magnetic attraction port 303.

[0069] The boss 304 is formed between the outer edge and the inner edge on one side of the "hui" character plate, and the two sides in the length direction of the boss 304 are respectively flush with the two opposite outer edges of the "hui" character plate. One side of the boss 304 in the width direction is flush with one outer edge of the "hui" character plate, and the other side is located between the inner edge and the outer edge of the "hui" character plate, that is, has a certain distance from the inner edge of the "hui" character plate to form a first clamping groove at the position corresponding to the magnetic attraction port 303.

[0070] Further, in some embodiments of the present application, the power supply device 2 is arranged above the magnetic attraction mechanism 3 and fixedly connected to the magnetic attraction mechanism 3.

[0071] Specifically, two oppositely arranged third connecting arms are provided at the lower end of the power supply device 2. The third connecting arms are arranged corresponding to the second connecting arm 311 and the first connecting arm 301, and third connecting holes are provided on the third connecting arms. The fastener sequentially passes through the first connecting hole, the second connecting hole and the third connecting hole, and the power supply device 2, the top cover 31 and the first outer shell 30 are fixed together.

[0072] Further, in some embodiments of the present application, the power supply device 2 includes a second outer shell and a power supply arranged inside the second outer shell. The third connecting arms are arranged on the second outer shell. Mounting holes are also provided on the side wall of the second outer shell. The switch of the power supply extends out of the second outer shell from the mounting holes. The switch of the power supply is used to control the power supply to supply power to the coil. When the switch of the power supply is pressed, the power supply is started, and power is supplied to the coil through the electrical connection line 4. When the iron core 32 is energized, a magnetic force is generated, generating an adsorption force on the back plate, and then pressing the diffusion plate bracket 5 tightly against the back plate. When the switch of the power supply is pressed again, the switch of the power supply pops up, the power supply is turned off, the coil is powered off, the magnetic force disappears, and the magnetic pole mechanism is disengaged from the back plate, and can be moved to the next diffusion plate bracket 5 that needs to be pressed back through the link mechanism 1.

[0073] Further, an electrical connection head 321 is provided on the outer side surface of the iron core 32. The electrical connection head 321 is used to connect with the electrical connection line 4 to achieve electrical connection with the power supply. In some embodiments of the present application, when the iron core 32 is embedded in the first card slot, the electrical connection head 321 is located in the cavity above the boss 304. The cavity above the boss 304 provides a accommodation space for the electrical connection head 321 and the electrical connection line 4, avoiding the formation of flying wires outside the first outer shell 30.

[0074] Furthermore, threading holes are provided on the top cover 31, and corresponding threading holes are also provided on the bottom surface of the second outer shell. The electrical connection line 4 passes through the threading holes on the top cover 31 and the threading holes on the second outer shell to achieve electrical connection between the power supply and the coil. By providing threading holes on the top cover 31 and the bottom surface of the second outer shell, the electrical connection line 4 can be hidden inside the diffusion plate backpressure device, improving the aesthetics of the overall structure and avoiding the potential leakage hazard caused by the exposure of the electrical connection line 4 to the air.

[0075] It should be noted that the power supply device 2 can also adopt a remote power supply method, and the opening and closing of the power supply device 2 are controlled by a controller to realize the power-on and power-off of the coil.

[0076] Further, the upper end of the link mechanism 1 is fixed on the ceiling of the assembly workshop, or an independent fixing mechanism is provided in the assembly workshop to fix the upper end of the link mechanism 1. Exemplarily, a track can be provided above the assembly workshop, and the link mechanism 1 is slidably connected to the track, and the link mechanism 1 and the magnetic attraction mechanism 3 can be moved, and the operability space is higher.

[0077] Furthermore, at least one section of the first link in the linkage mechanism 1 is a telescopic link. The adjacent linkage mechanisms 1 are connected by a spherical hinge joint 10, enabling a relatively large rotation angle of the linkage mechanism 1. The spherical hinge joint 10 is set with high damping. When the linkage mechanism 1 rotates to a set angle, the linkage mechanism 1 can be fixed at this angle and will not rotate arbitrarily. Therefore, the magnetic attraction mechanism 3 can maintain a certain suspension, that is, when the linkage mechanism 1 rotates to any angle, it can remain stationary at this angle.

[0078] Specifically, in some embodiments of the present application, the number of the first links is two. The upper first link is the first connecting rod 11. The upper end of the first connecting rod 11 is connected to the ceiling of the assembly workshop through the spherical hinge joint 10. The lower end of the first connecting rod 11 is provided with a spherical hinge joint 10. The lower first link is the second connecting rod 12. The upper end of the second connecting rod 12 is provided with a spherical bowl 13. The spherical hinge joint 10 is rotatably arranged in the spherical bowl 13 to realize the hinged connection between the first connecting rod 11 and the second connecting rod 12. The lower end of the second connecting rod 12 is provided with a spherical hinge joint 10. The lower end of the second connecting rod 12 is hinged to the upper spherical hinge joint 10 of the power supply device 2 through the spherical hinge joint 10, so that the rotation angle of the magnetic attraction mechanism 3 is relatively large and the range of the operation space is also wider.

[0079] The second connecting rod 12 is a telescopic link, which is convenient for the operator to change the length of the linkage mechanism 1, so that when pressing the diffusion plate bracket 5 back, the magnetic attraction mechanism 3 can approach the diffusion plate bracket 5 and can also move away from the diffusion plate bracket 5 when the back pressure is completed; the two first links effectively ensure that the magnetic attraction mechanism 3 can accurately move to the established position.

[0080] It should be noted that the number of the first links can also be three or more, and in actual production, it can be adjusted according to needs.

[0081] Exemplarily, when using the diffusion plate bracket back pressure device of the embodiment of the present application to press the diffusion plate bracket 5 back, compared with the traditional pressing tooling, each back pressure operation can save 2.5 seconds. Calculated based on the average output of a certain production line and the average value of the diffusion plate bracket 5, the daily labor cost can be saved by more than 13,000 yuan, and the annual cost savings is converted to 4 million yuan. Specifically as shown in Table 1:

[0082]

[0083] Among them, in Table 1, the data in the second row are the relevant parameters when using the traditional pressing tooling for back pressure, and the data in the third row are the relevant parameters when using the diffusion plate back pressure device of the embodiment of the present application for back pressure.

[0084] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments described herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A backpressure device for a diffusion plate bracket, which is used to press the diffusion plate bracket (5) against the backplane, and is characterized in that, Comprising: A linkage mechanism (1), including at least two mutually articulated first linkages; A magnetic attraction mechanism (3), articulated with the linkage mechanism (1); Wherein, the magnetic attraction mechanism (3) includes an iron core (32), a coil, and a power supply device (2). An installation groove (320) with both ends open is provided on the iron core (32). The coil is arranged around the inner wall of the installation groove (320), and a containing cavity for containing a support structure (52) of a diffusion plate bracket (5) is formed inside the coil; The power supply device (2) is electrically connected to the coil for supplying power to the coil.

2. The backpressure device for the diffusion plate bracket according to claim 1, wherein The magnetic attraction mechanism (3) further includes a first outer shell (30). The interior of the first outer shell (30) is hollow, and the upper end of the first outer shell (30) is open to form a placement opening (302) for placing the iron core (32). A magnetic attraction opening (303) is provided at the lower end of the first outer shell (30), and the area of the magnetic attraction opening (303) is smaller than the bottom area of the iron core (32).

3. The backpressure device for the diffusion plate bracket according to claim 2, wherein The magnetic attraction mechanism (3) further includes a top cover (31). The top cover (31) is arranged at the placement opening (302) and is fixedly connected to the first outer shell (30) to seal the iron core (32) inside the first outer shell (30).

4. The backpressure device for the diffusion plate bracket according to claim 3, wherein, Two first connecting arms (301) are provided on the outer side wall of the first outer shell (30). The two first connecting arms (301) are arranged opposite to each other. Two second connecting arms (311) are arranged at the corresponding positions of the top cover (31). The second connecting arms (311) are connected to the first connecting arms (301) one by one.

5. The backpressure device for a diffusion plate support according to claim 4, wherein The upper surface of the first connecting arm (301) is lower than the upper end surface of the first outer shell (30), and a first positioning groove (305) is opened downward at the position of the first outer shell (30) corresponding to the first connecting arm (301). The first positioning groove (305) is opened from the upper end surface of the first outer shell (30) to a position flush with the upper surface of the first connecting arm (301). The second connecting arm (311) is clamped in the first positioning groove (305).

6. The backpressure device for the diffusion plate bracket according to claim 5, wherein, The width of the first positioning groove (305) is equal to the width of the second connecting arm (311), and the depth of the first positioning groove (305) is equal to the thickness of the second connecting arm (311).

7. The backpressure device for a diffusion plate bracket according to claim 2, wherein, A boss (304) protrudes upward on the inner wall of the lower end of the first outer shell (30). The boss (304) and the inner side wall of the first outer shell (30) together form a first clamping groove. The first clamping groove is arranged corresponding to the magnetic attraction opening (303), and the iron core (32) is embedded in the first clamping groove.

8. The backpressure device for the diffusion plate bracket according to claim 7, wherein, The power supply device (2) is arranged above the magnetic attraction mechanism (3) and is fixedly connected to the magnetic attraction mechanism (3); and / or, The power supply device (2) includes a second outer shell and a power supply arranged inside the second outer shell. An installation hole is provided on the side wall of the second outer shell. The switch of the power supply extends out of the second outer shell from the installation hole. The switch is used to control the power supply to supply power to the coil.

9. The backpressure device for the diffusion plate bracket according to claim 8, wherein, An electrical connector (321) is provided on the outer side surface of the iron core (32). When the iron core (32) is embedded in the first card slot, the electrical connector (321) is located above the boss (304), and the electrical connector (321) is used to connect with the electrical connection wire (4).

10. The backpressure device for a diffusion plate bracket according to any one of claims 1 to 9, characterized in that, At least one section of the first connecting rod is a telescopic rod.

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