CN214774682U

CN214774682U - Main frame structure of movable screen frame

Info

Publication number: CN214774682U
Application number: CN202121570910.5U
Authority: CN
Inventors: 张深义; 杨花玲; 刘丕汉; 孙建华; 张鹏超; 王卓
Original assignee: Shenzhen Mengrui Electronics Co ltd
Current assignee: Shenzhen Mengrui Electronics Co ltd
Priority date: 2021-07-10
Filing date: 2021-07-10
Publication date: 2021-11-19
Anticipated expiration: 2031-07-10

Abstract

The utility model belongs to the technical field of surface mounting technique in the electronic equipment trade and specifically relates to a main frame structure of activity screen frame is related to, and it is equipped with the main frame body of arrangement space in including, and main frame body is equipped with two logical grooves that communicate to arrangement space along self length direction interval, and two logical grooves are in same straight line, and the tip to the main frame body is link up to two one ends that lead to the groove and deviate from mutually. This application can promote the holistic anti deformability of main frame body to keep the good tensioning effect of main frame body to the activity steel sheet subassembly, and the follow-up installation of the movable rod of being convenient for.

Description

Main frame structure of movable screen frame

Technical Field

The application relates to the technical field of surface assembly in the electronic assembly industry, in particular to a main frame structure of a movable screen frame.

Background

SMT (Surface Mount Technology), known as Surface Mount or Surface Mount Technology, is currently one of the most popular techniques and technologies in the electronic assembly industry. The surface-mounted component without pins or short leads is mounted on the surface of a printed circuit board or other substrates and is soldered and assembled by methods such as reflow soldering or dip soldering. The core of SMT processing lies in adopting the steel mesh that is preset with the mesh to carry out the solder paste printing, and along with advocating and developing of environmental protection theory, the steel mesh that the solder paste printing was used also evolves gradually into the movable steel mesh that can the free activity change by early integrative fixed structure.

Chinese patent publication No. CN108437614A discloses a movable steel net, which mainly comprises a movable steel sheet assembly and a movable net frame for mounting the movable steel sheet assembly, wherein the movable steel sheet assembly comprises a steel sheet and an auxiliary frame for fixing and supporting the steel sheet; correspondingly, the movable net frame is provided with a tensioning mechanism for tensioning the auxiliary frame to tighten the steel sheet. The movable net frame comprises four main frames and four corner connecting pieces, the four main frames and the four corner connecting pieces are spliced to form a rectangular frame body, and meanwhile, an accommodating space is formed inside the main frames; the tensioning mechanism comprises a movable rod rotatably connected with the main frame and a driving assembly arranged in the installation space and used for driving the movable rod to swing.

Specifically, referring to fig. 1 and 2, the main frame of the movable screen frame includes a main frame body 1 in which an accommodating space 2 is provided, the main frame body 1 is provided with a through groove 14 communicated to the accommodating space 2, and the through groove 14 is arranged along the length direction of the main frame body 1 and penetrates through two ends of the main frame body 1; the movable rod 3 penetrates the through groove 14 so that one end of the movable rod 3 is positioned in the installation space 2 and the other end is positioned outside the main frame body 1 to be matched with the tension matching groove 411 of the auxiliary frame 41. Meanwhile, the movable rod 3 is provided with a hinge part 31 along the length direction thereof; accordingly, the middle of the through groove 14 is provided with a hinge groove 141 which is engaged with the hinge portion 31. In the actual working process, the driving assembly in the installation space 2 drives the movable rod 3 to swing so as to apply force to the auxiliary frame 41 to tension the auxiliary frame 41.

Aiming at the related technologies, the through groove 14 is arranged on the main frame body 1 in a penetrating manner, so that the installation of the movable rod 3 is convenient, but the deformation resistance of the whole main frame body 1 during bearing force can be weakened to a certain extent, the bearing deformation of the main frame body 1 is small when the main frame body is used for tensioning the small-size movable steel sheet assembly 4, so that the influence is not large, but the tensioning effect on the movable steel sheet assembly 4 is poor easily caused by the large bearing deformation of the main frame body 1 when the main frame body is used for tensioning the large-size movable steel sheet assembly 4.

SUMMERY OF THE UTILITY MODEL

In order to promote the anti deformability after the load of main frame body, keep the good tensioning effect to movable steel sheet subassembly, this application provides a main frame structure of activity screen frame.

The application provides a main frame structure of activity screen frame adopts following technical scheme:

the utility model provides a main frame structure of activity screen frame, is equipped with the main frame body of arrangement space in including, main frame body is equipped with two logical grooves that communicate to arrangement space along self length direction interval, two lead to the groove and be in same straight line, and two the one end that leads to the groove and deviate from mutually link up to the tip of main frame body.

Through adopting above-mentioned technical scheme, the interval sets up two and leads to the groove, is equivalent to divide into two segmentations with original logical groove for the middle part region of whole main frame body still leaves the connecting strip that can carry out the connection with the main frame body that leads to the groove both sides, thereby promotes the holistic anti deformability of main frame body, with the good tensioning effect of keeping movable steel sheet subassembly. Meanwhile, one end of each of the two through grooves is communicated with the end part of the main frame body, so that the movable rod can be conveniently installed in the through groove. Meanwhile, the anti-deformation capacity of the main frame body is enhanced, so that the movable net frame formed finally is not easy to stress and arch, and the movable net frame can have good flatness. In the actual solder paste printing process, the solder paste can be reduced from being sharpened and connected with the solder, and the solder paste printing effect is improved.

Optionally, the two through grooves have the same length.

Through adopting above-mentioned technical scheme, two lengths that lead to the groove are the same, namely make the connecting strip that reserves between two logical grooves be in the intermediate position of main frame body, can make the atress of main frame body more balanced, reduce the atress unbalanced and make the crooked condition of deformation of main frame body.

Optionally, the installation space is provided with two reinforcing strips at intervals on the inner wall of the through groove, the length direction of the two reinforcing strips is parallel to the length direction of the through groove, and the through groove is located between the two reinforcing strips.

Through adopting above-mentioned technical scheme, utilize the reinforcement strip to carry out the structural reinforcement to logical groove position, reduce the condition that leads to the deformation of groove overall shape because of the atress.

Optionally, the inner wall of the installation space, adjacent to the inner wall of the reinforcing strip, has a distance from the reinforcing strip, so that an insertion space is formed on one side of the two reinforcing strips, which is away from each other.

Through adopting above-mentioned technical scheme, when assembling main frame body into the activity net frame, the both ends of main frame body all can connect the angle connecting piece, and the grafting space can supply the angle connecting piece to insert to carry on spacingly to the position of two reinforcing strips, reduce the condition of two reinforcing strip interval increases.

Optionally, a fixing strip is further disposed in the installation space, and a distance is provided between the fixing strip and one of the reinforcing strips to form a positioning space.

Through adopting above-mentioned technical scheme, the corresponding setting element that can stretch into location space on the movable rod utilizes the cooperation of location space and setting element to fix a position the movable rod, reduces the movable rod swing and excessively and to leading to the groove, the main frame body lateral wall causes the condition of damage to make main frame body can keep the good tensioning effect to activity steel sheet subassembly.

Optionally, the surface of the main frame body provided with the through groove is set as a tensioning fitting surface, and one edge of the tensioning fitting surface in the width direction of the main frame body is provided with a butting convex edge for butting against a steel sheet in the movable steel sheet assembly.

Through adopting above-mentioned technical scheme, utilize the protruding edge of butt to carry out the butt to the steel sheet, can promote the tensioning effect to activity steel sheet subassembly to a certain extent.

Optionally, corners of the end face of the abutting convex edge, which is abutted against the steel sheet, are all rounded.

Through adopting above-mentioned technical scheme, reduce the protruding edge of butt to the wearing and tearing of steel sheet in-process of steel sheet butt.

Optionally, the tensioning fitting surface is equipped with the boss along the main frame body width direction one side of keeping away from the protruding edge of butt, the boss with constitute the heavy platform that can the holding auxiliary frame between the protruding edge of butt, lead to the groove and be in heavy platform bottom.

Through adopting above-mentioned technical scheme, the setting of heavy platform can carry out the holding to assisting the frame, is convenient for fix a position assisting the position of frame among the in-service use.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the deformation resistance of the whole main frame body can be improved, so that a good tensioning effect of the main frame body on the movable steel sheet assembly is kept, and the subsequent installation of the movable rod is facilitated;

2. the anti deformability's of main frame body reinforcing also makes the difficult condition that the atress bows that appears of the movable screen frame that finally constitutes to make movable screen frame can possess good roughness. In the actual solder paste printing process, the situations of solder paste tip pulling and tin connection can be reduced, and the solder paste printing effect is improved;

3. the auxiliary frame in the movable steel sheet assembly is convenient to position, and the tensioning effect of the movable steel sheet assembly can be improved.

Drawings

Fig. 1 is a schematic diagram of the main frame of an active frame as indicated in the background of the present application.

Fig. 2 is a schematic view of the main frame, the movable bar and the movable steel net assembly as indicated in the background of the present application.

Fig. 3 is a schematic diagram of a main frame structure in the embodiment of the present application.

Fig. 4 is a schematic view of the main frame body, the movable rod and the movable steel net assembly according to the embodiment of the present application.

Description of reference numerals: 1. a main frame body; 11. abutting the convex edge; 12. a boss; 121. reinforcing ribs; 13. sinking a platform; 14. a through groove; 141. a hinge slot; 2. a placement space; 21. reinforcing the strips; 22. a fixing strip; 3. a movable rod; 31. a hinge portion; 4. a movable steel sheet assembly; 41. an auxiliary frame; 411. a tension fit groove; 42. a steel sheet.

Detailed Description

The present application is described in further detail below with reference to figures 3-4.

The embodiment of the application discloses a main frame structure of a movable screen frame. Referring to fig. 3, the main frame structure of a movable screen frame includes a main frame body 1 provided with a placement space 2 therein, specifically, the main frame body 1 is in a long strip shape, the placement space 2 is arranged along the length direction of the main frame body 1, and the placement space 2 penetrates through both ends of the main frame body 1.

Referring to fig. 3 and 4, one surface of the main frame body 1 is set as a tension engagement surface; the tensioning fitting surface is formed with an abutting convex edge 11 along one side of the length direction of the main frame body 1, and a boss 12 is formed on the other side of the tensioning fitting surface, so that a sunken platform 13 is formed on the tensioning fitting surface. In this embodiment, the inner side of the main frame body 1 at the boss 12 is provided with a cavity to reduce the overall weight and reduce the use of materials; meanwhile, a reinforcing rib 121 for reinforcing the overall structural strength of the main frame body 1 is installed in the chamber. Specifically, the number and arrangement of the reinforcing ribs 121 may be designed according to the specific size of the interior of the chamber, and will not be described herein again. In another embodiment, the main frame body 1 at the boss 12 may also be provided with a solid shape, so that the force bearing capacity of the main frame body 1 is stronger.

Further, in the present embodiment, the abutting ledge 11 is used to abut the surface of the steel sheet 42 in the movable steel sheet assembly 4; therefore, in the movable net frame formed by the four main frame bodies 1, the surfaces of the steel sheets 42 can be tensioned to the same plane. In addition, in order to reduce the abrasion of the abutting flange 11 to the steel piece 42 in the process of abutting the steel piece 42, the corners of the end face of the abutting flange 11 for abutting against the steel piece 42 are rounded.

The sinking platform 13 is located between the abutting convex edge 11 and the boss 12, and the sinking platform 13 can be used for accommodating the auxiliary frame 41 in the movable steel sheet assembly 4, so that the position of the auxiliary frame 41 is positioned in the actual use process. Meanwhile, two through grooves 14 communicated to the accommodating space 2 are formed in the bottom of the sinking platform 13 at intervals along the length direction of the main frame body 1; the two through grooves 14 have the same length and are in the same straight line. In addition, one end of the two through grooves 14 facing away from each other penetrates to the end of the main frame body 1, so that the movable rod 3 is mounted in the through groove 14.

Referring to fig. 4, two reinforcing strips 21 are formed on the inner wall of the installation space 2 communicated with the through groove 14, the length directions of the two reinforcing strips 21 are parallel to the length direction of the through groove 14, and the through groove 14 is located between the two reinforcing strips 21; meanwhile, the reinforcing strips 21 have intervals with the inner wall of the accommodating space 2 adjacent to the inner wall where the reinforcing strips are located, so that an inserting space is formed at one side of the two reinforcing strips 21 which are deviated from each other. When assembling main frame body 1 into a movable net frame, the two ends of main frame body 1 are connected with the angle connecting pieces, and the inserting space can be used for inserting the angle connecting pieces so as to limit the positions of two reinforcing strips 21 and reduce the increase of the distance between the two reinforcing strips 21

Meanwhile, the inner wall of the installation space 2 is also formed with a fixing strip 22, and the fixing strip 22 is spaced apart from one of the reinforcing strips 21 to form a positioning space. Correspondingly, the corresponding setting element that can stretch into the location space that sets up on movable rod 3 utilizes the cooperation of location space and setting element to prescribe a limit to the activity space of movable rod 3, reduces movable rod 3 and swings excessively and cause the condition of damage to logical groove 14, main frame body 1 lateral wall to make main frame body 1 can keep the good tensioning effect to activity steel sheet subassembly 4.

The implementation principle of the main frame structure of the movable screen frame in the embodiment of the application is as follows: two through grooves 14 are arranged at intervals, which is equivalent to dividing the original through groove 14 into two sections, so that the middle area of the whole main frame body 1 is provided with connecting strips which can connect the main frame bodies 1 at two sides of the through groove 14, thereby improving the whole deformation resistance of the main frame body 1 and keeping the good tensioning effect on the movable steel sheet assembly 4.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a main frame structure of activity screen frame, is equipped with main frame body (1) of arrangement space (2) in including, its characterized in that: the main frame body (1) is provided with two through grooves (14) communicated to the accommodating space (2) at intervals along the length direction of the main frame body, the through grooves (14) are located on the same straight line, and one ends, away from each other, of the through grooves (14) are communicated to the end portion of the main frame body (1).

2. The main frame structure of a movable net frame according to claim 1, characterized in that: the lengths of the two through grooves (14) are the same.

3. The main frame structure of a movable net frame according to claim 1, characterized in that: the arrangement space (2) is communicated with two reinforcing strips (21) at intervals on the inner wall of the through groove (14), the length directions of the two reinforcing strips (21) are parallel to the length direction of the through groove (14), and the through groove (14) is positioned between the two reinforcing strips (21).

4. A main frame structure of a movable net frame according to claim 3, characterized in that: the inner wall of the arrangement space (2) adjacent to the inner wall of the reinforcing strip (21) is spaced from the reinforcing strip (21), so that an insertion space is formed on one side of the two reinforcing strips (21) which are deviated from each other.

5. A main frame structure of a movable net frame according to claim 3, characterized in that: still be equipped with fixed strip (22) in arrangement space (2), fixed strip (22) have the interval with one of them reinforcement strip (21) in order to constitute the location space.

6. The main frame structure of a movable net frame according to claim 1, characterized in that: the main frame body (1) is provided with a through groove (14), the surface of the through groove is set to be a tensioning matching surface, and the tensioning matching surface is provided with a butt convex edge (11) used for butting a steel sheet (42) in the movable steel sheet assembly (4) along one edge of the main frame body (1) in the width direction.

7. The main frame structure of a portable screen frame according to claim 6, wherein: the corners of the end face, which is used for abutting against the steel sheet (42), of the abutting convex edge (11) are all rounded.

8. The main frame structure of a portable screen frame according to claim 6, wherein: the tensioning fitting surface is equipped with boss (12) along main frame body (1) width direction one side of keeping away from protruding edge (11) of butt, boss (12) with constitute heavy platform (13) that can the holding auxiliary frame (41) frame between protruding edge (11) of butt, lead to groove (14) and be in heavy platform (13) bottom.