Precise sheet metal part connecting and reinforcing structure

Abstract

The utility model relates to the technical field of precision sheet metal parts, and discloses a precision sheet metal part connection reinforcing structure which comprises a first fixing head and a second fixing head, a first sheet metal part is fixedly arranged on one side of the first fixing head, and a rotary fixing mechanism is arranged in the first fixing head. The rotating fixing mechanism comprises a pressing block, a connecting rod, a trapezoidal limiting block, a rotating rod, a gear, a rack and a through hole, a second sheet metal part is fixedly arranged on the other side of the second fixing head, and a sliding fixing mechanism is arranged in the second fixing head. The sliding fixing mechanism comprises a first spring, a push plate, a first limiting block, a second limiting block, a third limiting block and a fourth limiting block. According to the utility model, through the internal sliding fixing mechanism and the internal rotating fixing mechanism, not only are the stability and the compactness of the connection of the sheet metal parts improved, but also the convenience of mounting and dismounting and the durability of use are considered, the overall performance is obviously improved, and the service life is obviously prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of precision sheet metal parts, in particular to a precision sheet metal part connection reinforcement structure. Background Art

[0002] Precision sheet metal parts are products processed by sheet metal technology, and their notable feature is that the thickness of the same part is consistent. Sheet metal parts have the characteristics of light weight, high strength, conductivity (can be used for electromagnetic shielding), low cost, and good performance in large-scale mass production. They have been widely used in the fields of electronics, communications, automobile industry, medical equipment, etc.

[0003] At present, most sheet metal connections are fixed and installed by bolts. However, after being subjected to continuous vibration and impact, the bolts are prone to loosening, resulting in a decrease in the stability of the connection between the sheet metal parts, affecting the usage. Therefore, the utility model provides a precision sheet metal connection reinforcement structure to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a precision sheet metal connection reinforcement structure, which can make the precision sheet metal parts more firmly connected to each other, ensure stability during use, and also take into account the convenience of disassembly.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A precision sheet metal connection reinforcement structure comprises a first fixed head and a second fixed head, a first sheet metal is fixedly arranged on one side of the first fixed head, a rotation fixing mechanism is arranged inside the first fixed head, and the rotation fixing mechanism comprises a pressing block, two connecting rods, two trapezoidal limit blocks, two rotating rods, two gears and two racks;

[0007] A second sheet metal part is fixedly arranged on the other side of the second fixed head, and a sliding fixing mechanism is arranged inside the second fixed head, and the sliding fixing mechanism includes a first spring, a push plate, two first limit blocks, a second limit block, two third limit blocks and two fourth limit blocks;

[0008] Through the above technical scheme, during the application process, the first fixed head assembled at the front end of the first sheet metal part is docked with the second fixed head at the front end of the second sheet metal part. During docking, the second fixed head performs an extrusion operation on the rotating fixing mechanism inside the first fixed head. The extrusion fixing operation is achieved by the pressure block, connecting rod, trapezoidal limit block, rotating rod, gear and rack in the rotating fixing mechanism, thereby improving work efficiency. The secondary fixing operation is achieved by the first spring, push plate, first limit block, limit block, third limit block and fourth limit block inside the sliding fixing mechanism, thereby making the connection between the precision sheet metal parts become tighter.

[0009] Further, the outside of the pressure block is slidably arranged inside the first fixed head, the two connecting rods are rotatably arranged on one side of the pressure block at one end relative to one another, the two racks are rotatably arranged at opposite ends of the two connecting rods at opposite ends respectively, the outer surfaces of the two gears are respectively meshed and connected to the upper ends of the two racks, the outsides of the two racks are both slidably arranged inside the first fixed head, one side of the two rotating rods is respectively fixedly arranged on the other side of the two gears, the opposite ends of the two trapezoidal limit blocks are respectively fixedly arranged on the opposite ends of the two rotating rods, and through holes are opened inside the two trapezoidal limit blocks;

[0010] Through the above technical solution, when pressure is applied to the trapezoidal block at the front end of the pressure block, the pressure causes the pressure block to move inward and compresses the compression spring fixed on one side of it. As the pressure block moves, the connecting rods connected at both ends rotate accordingly, thereby driving the two racks to slide parallel to each other inside the first fixed head. Since the racks are meshed with the gears, the movement of the racks will drive the gears to rotate synchronously, further causing the two rotating rods to rotate. At this time, the trapezoidal limit block connected to the rotating rod begins to rotate and is embedded in the second fixed head, thereby completing the initial fixing operation. There are also through holes inside the trapezoidal limit block to facilitate secondary fixing.

[0011] Further, the other side of the first spring is fixedly arranged on one side of the second fixed head, the other side of the push plate is fixedly arranged on one side of the first spring, the outside of the push plate is slidably arranged inside the second fixed head, the other side of the first limit block is fixedly arranged on one side of the push plate, the other sides of the two second limit blocks are fixedly arranged on one side of the push plate, the other sides of the two third limit blocks are fixedly arranged on one side of the push plate, and the lower end of the fourth limit block is rotatably arranged on the upper end of the push plate;

[0012] Through the above technical scheme, secondary reinforcement is performed by manually operating the sliding fixing mechanism, and the fourth limit block is rotated to disengage it from the original limit groove restriction. Under the strong thrust of the first spring, the push plate slides inside the second fixed head, so that the first limit block on one side of the push plate slides into the internal gap on the other side of the trapezoidal block. At the same time, the third limit block on the push plate slides into the pre-designed slide groove, and the second limit block passes through the through hole on the trapezoidal limit block and enters the specific area inside the second fixed head, which is beneficial to improve assembly efficiency and connection reliability.

[0013] Furthermore, a plurality of second springs are fixedly arranged on one side inside the second fixed head, and a limiting ball is fixedly arranged on opposite ends of two of the plurality of second springs;

[0014] Through the above technical solution, pressure is applied to the limiting ball to shrink the second spring. When the push plate slides to the set position, the compressed second spring pushes the limiting ball forward under the action of its own elastic restoring force, so that the limiting ball and the second limiting block are effectively engaged.

[0015] Furthermore, two limiting grooves are provided inside the second fixed head near the upper end, and a trapezoidal block is fixedly provided on the other side of the pressing block;

[0016] Through the above technical solution, the limiting groove can perform a limiting operation on the fourth limiting block, and the trapezoidal block on one side of the pressing block is conveniently connected to the second fixed head.

[0017] Furthermore, a compression spring is fixedly arranged on one side of the compression block, and one side of the compression spring is fixedly arranged inside the first fixed head, and a sliding groove is provided on the other side of the two trapezoidal limit blocks;

[0018] Through the above technical solution, the compression spring enables the compression block to quickly return to its original position after the connection is released, which is convenient for reassembly, and the sliding groove on the trapezoidal limit block facilitates secondary fixation.

[0019] Furthermore, two return springs are fixedly arranged on one side of the second fixed head, and a rotating block is fixedly arranged on one side of the two return springs, and opposite ends of the two rotating blocks are both rotatably arranged on one side of the second fixed head;

[0020] Through the above technical solution, the reset spring can provide a quick recovery mechanism, which can quickly restore the rotating block to its initial state after the connection is released, thereby facilitating the fixing operation.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model proposes a precision sheet metal connection reinforcement structure. When the second fixed head is aligned with and applies force to the inside of the first fixed head during fixing, the trapezoidal block at the front end of the pressure block is pushed by the second fixed head, driving the pressure block to displace, and causing the connecting rods on both sides to rotate, and causing the rack to slide inside the first fixed head. Since the rack is meshed with the gear, the movement of the rack causes the gear to rotate, and the rotation of the gear is transmitted to the rotating rod, causing the rotating rod to rotate as well, so that the trapezoidal limit block rotates under the drive of the rotating rod and is embedded in the inside of the second fixed head to form a stable clamping structure.

[0023] 2. The utility model proposes a precision sheet metal connection reinforcement structure. When performing secondary fixation, the fourth limit block is first rotated to make the push plate pushed by the first spring to slide inside the second fixed head, and the first limit block is clamped into the internal groove on the opposite side of the trapezoidal block. At the same time, the third limit block is also embedded in the slide groove. At the same time, the second limit block passes through the through hole inside the trapezoidal limit block and enters the designated area inside the second fixed head, thereby completing the secondary fixing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric schematic diagram of the utility model;

[0025] Figure 2 It is a top cross-sectional schematic diagram of the utility model;

[0026] Figure 3 It is a top cross-sectional schematic diagram of the utility model in an opened state;

[0027] Figure 4 It is a front cross-sectional schematic diagram of the utility model;

[0028] Figure 5 It is an enlarged schematic diagram of point A of the present utility model.

[0029] Legend:

[0030] 1. First sheet metal part; 2. First fixed head; 3. Sliding fixing mechanism; 4. Second fixed head; 5. Second sheet metal part; 6. Return spring; 7. Rotating block; 8. Rotating fixing mechanism; 9. Limiting ball; 10. Compression spring; 11. Trapezoidal block; 12. Second spring; 13. Slide groove; 14. Limiting groove; 301. First spring; 302. Push plate; 303. First limiting block; 304. Second limiting block; 305. Third limiting block; 306. Fourth limiting block; 801. Pressing block; 802. Connecting rod; 803. Trapezoidal limiting block; 804. Rotating rod; 805. Gear; 806. Rack; 807. Through hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-5 , an embodiment provided by the utility model:

[0033] A precision sheet metal connection reinforcement structure includes a first fixed head 2 and a second fixed head 4, a first sheet metal 1 is fixedly arranged on one side of the first fixed head 2, a rotating fixing mechanism 8 is arranged inside the first fixed head 2, and the rotating fixing mechanism 8 includes a pressing block 801, two connecting rods 802, two trapezoidal limit blocks 803, two rotating rods 804, two gears 805 and two racks 806, the pressing block 801 is externally slidably arranged inside the first fixed head 2, the two connecting rods 802 are rotatably arranged on one side of the pressing block 801 at one end, the two racks 806 are rotatably arranged at the opposite ends of the two connecting rods 802 at one end, and the two gears 805 are rotatably arranged at the opposite ends of the two connecting rods 802 at one end. The outer surfaces of the wheels 805 are respectively meshed and connected to the upper ends of the two racks 806, the outer parts of the two racks 806 are slidably arranged inside the first fixed head 2, one side of the two rotating rods 804 is respectively fixedly arranged on the other side of the two gears 805, the opposite ends of the two trapezoidal limit blocks 803 are respectively fixedly arranged on the opposite ends of the two rotating rods 804, through holes 807 are provided inside the two trapezoidal limit blocks 803, a trapezoidal block 11 is fixedly arranged on the other side of the pressure block 801, a sliding groove 13 is provided on the other side of the two trapezoidal limit blocks 803, a compression spring 10 is fixedly arranged on one side of the pressure block 801, and one side of the compression spring 10 is fixedly arranged inside the first fixed head 2;

[0034] When making the connection, the second fixed head 4 is aligned with and applies pressure to the rotating fixed structure inside the first fixed head 2. The trapezoidal block 11 located at the front end of the pressure block 801 is squeezed by the side of the second fixed head 4, thereby driving the pressure block 801 to move and compressing the compression spring 10 fixed on one side. As the pressure block 801 moves, it transmits power through the connecting rods 802 on both sides, causing the two connecting rods 802 to rotate. The rotating connecting rods 802 in turn drive the racks 806 connected to them to slide inside the first fixed head 2. Due to the precise meshing of the racks 806 and the gears 805, the movement of the racks 806 drives the gears 805 to rotate synchronously, which is further transmitted to the two rotating rods 804 connected thereto, causing the rotating rods 804 to also rotate, causing the trapezoidal limit block 803, which was originally in a stationary state, to rotate under the drive of the rotating rods 804, so that it is embedded in the internal space of the second fixed head 4, forming a preliminary clamping operation.

[0035] A second sheet metal part 5 is fixedly arranged on the other side of the second fixed head 4, a sliding fixing mechanism 3 is arranged inside the second fixed head 4, and the sliding fixing mechanism 3 includes a first spring 301, a push plate 302, two first limit blocks 303, a second limit block 304, two third limit blocks 305 and two fourth limit blocks 306. The other side of the first spring 301 is fixedly arranged on one side of the second fixed head 4, the other side of the push plate 302 is fixedly arranged on one side of the first spring 301, and the push plate 302 is externally slidably arranged inside the second fixed head 4. The other side of the first limit block 303 is fixedly arranged on one side of the push plate 302, the other sides of the two second limit blocks 304 are fixedly arranged on one side of the push plate 302, the other sides of the two third limit blocks 305 are fixedly arranged on one side of the push plate 302, the lower end of the fourth limit block 306 is rotatably arranged on the upper end of the push plate 302, two limit grooves 14 are provided inside the second fixed head 4 near the upper end, a plurality of second springs 12 are fixedly arranged on one side inside the second fixed head 4, and a plurality of second springs 12 are fixedly arranged on opposite ends thereof.

[0036] In order to perform a more stable secondary fixation, the operator starts the sliding fixing mechanism 3. First, by rotating the fourth limit block 306 to disengage it from the original limit slot 14, the first spring 301 will push the push plate 302 to slide inside the second fixing head 4. As the push plate 302 slides, the first limit block 303 will accurately slide into the internal groove on the opposite side of the trapezoidal block 11. At the same time, the third limit block 305 on the other side of the push plate 302 is embedded in the slide slot 13. At the same time, the second limit block 3 04 then slides smoothly into the designated area inside the second fixed head 4 along the through hole 807 reserved inside the trapezoidal limit block 803, causing the second limit block 304 to squeeze the limit ball 9 set inside the second fixed head 4, causing the second spring 12 connected to the rear of the limit ball 9 to contract. When the second limit block 304 slides to the predetermined position, the second spring 12 that was previously compressed and contracted rebounds by virtue of its own elastic potential energy, thereby forcefully pushing the limit ball 9 back to its original position, causing it to tightly clamp the second limit block 304, and finally completing the entire fixing operation.

[0037] Two return springs 6 are fixedly arranged on one side inside the second fixed head 4, and a rotating block 7 is fixedly arranged on one side of the two return springs 6. The opposite ends of the two rotating blocks 7 are both rotatably arranged on one side inside the second fixed head 4. The trapezoidal block 11 arranged inside the first fixed head 2 will exert pressure on the two rotating blocks 7 when it contacts the two rotating blocks 7 inside the second fixed head 4, causing the return spring 6 connected to it to be compressed. When the trapezoidal block 11 is fully embedded in place, the previously compressed return spring 6 will quickly return to its original state under the action of its own elastic force, thereby prompting the rotating block 7 to slide along the preset path to one side of the trapezoidal block 11, thereby realizing the clamping operation.

[0038] Working principle: When in use, the first fixed head 2 at the front end of the first sheet metal part 1 is connected to the second fixed head 4 at the front end of the second sheet metal part 5. When the second fixed head 4 squeezes the rotating fixing mechanism 8 inside the first fixed head 2, the trapezoidal block 11 at the front end of the pressing block 801 is squeezed by one side of the second fixed head 4, so that the pressing block 801 moves and causes it to squeeze the compression spring 10 fixed on one side. At the same time, when the pressing block 801 moves, it drives the connecting rods 802 on both sides to rotate and causes the two racks 806 to move inside the first fixed head 2, so that the gear 805 meshing with it rotates and drives the two rotating rods 804 to rotate, so that the trapezoidal limit block 803 rotates and is clamped inside the second fixed head 4. At the same time, the trapezoidal block 11 inside the first fixed head 2 squeezes the two rotating blocks 7 inside the second fixed head 4, so that the reset spring 6 connected to it contracts. When the trapezoidal block 11 is fully entered, the reset When the second stopper 306 is in the locked state, the second stopper 306 is in the locked state, and the locking nut 308 is in the locked state.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A precision sheet metal connection reinforcement structure, comprising a first fixing head (2) and a second fixing head (4), characterized in that: A first sheet metal part (1) is fixedly arranged on one side of the first fixed head (2), and a rotation fixing mechanism (8) is arranged inside the first fixed head (2), wherein the rotation fixing mechanism (8) comprises a pressing block (801), two connecting rods (802), two trapezoidal limit blocks (803), two rotating rods (804), two gears (805) and two racks (806); A second sheet metal part (5) is fixedly arranged on the other side of the second fixed head (4), and a sliding fixing mechanism (3) is arranged inside the second fixed head (4), and the sliding fixing mechanism (3) comprises a first spring (301), a push plate (302), two first limit blocks (303), a second limit block (304), two third limit blocks (305) and two fourth limit blocks (306).

2. The precision sheet metal connection reinforcement structure according to claim 1, characterized in that: The outside of the pressing block (801) is slidably arranged inside the first fixed head (2); the two connecting rods (802) are rotatably arranged at one side of the pressing block (801) at one opposite end; the two racks (806) are rotatably arranged at the opposite ends of the two connecting rods (802) at one opposite end; the outer surfaces of the two gears (805) are respectively meshed and connected to the upper ends of the two racks (806); the outsides of the two racks (806) are slidably arranged inside the first fixed head (2); one side of the two rotating rods (804) is respectively fixedly arranged on the other side of the two gears (805); the opposite ends of the two trapezoidal limit blocks (803) are respectively fixedly arranged at the opposite ends of the two rotating rods (804); and through holes (807) are opened inside the two trapezoidal limit blocks (803).

3. The precision sheet metal connection reinforcement structure according to claim 1, characterized in that: The other side of the first spring (301) is fixedly arranged on the side of the second fixed head (4), the other side of the push plate (302) is fixedly arranged on the side of the first spring (301), the outside of the push plate (302) is slidably arranged inside the second fixed head (4), the other side of the first limit block (303) is fixedly arranged on the side of the push plate (302), the other sides of the two second limit blocks (304) are fixedly arranged on the side of the push plate (302), the other sides of the two third limit blocks (305) are fixedly arranged on the side of the push plate (302), and the lower end of the fourth limit block (306) is rotatably arranged on the upper end of the push plate (302).

4. The precision sheet metal connection reinforcement structure according to claim 1, characterized in that: A plurality of second springs (12) are fixedly arranged on one side inside the second fixed head (4), and a limiting ball (9) is fixedly arranged on opposite ends of each of the plurality of second springs (12).

5. The precision sheet metal connection reinforcement structure according to claim 1, characterized in that: Two limiting grooves (14) are provided inside the second fixed head (4) near the upper end, and a trapezoidal block (11) is fixedly arranged on the other side of the pressing block (801).

6. The precision sheet metal connection reinforcement structure according to claim 1, characterized in that: A compression spring (10) is fixedly arranged on one side of the compression block (801), and one side of the compression spring (10) is fixedly arranged inside the first fixed head (2). A sliding groove (13) is provided on the other side of the two trapezoidal limit blocks (803).

7. The precision sheet metal connection reinforcement structure according to claim 1, characterized in that: Two return springs (6) are fixedly arranged on one side inside the second fixed head (4), and a rotating block (7) is fixedly arranged on one side of the two return springs (6), and opposite ends of the two rotating blocks (7) are both rotatably arranged on one side inside the second fixed head (4).

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