PCB (printed circuit board) rack with locking structure

Abstract

The utility model belongs to the technical field of pcb material racks, in particular to a pcb material rack with a locking structure, which comprises a rack body, a fixed material rack and a movable material rack are arranged on the rack body, the movable material rack is slidably arranged in the rack body through four groups of screw-nut structures, the four groups of screw-nut structures are connected through a synchronous belt, and the locking structure is arranged on the rack body. The synchronous belt is connected with the adjusting hand wheel, the adjusting hand wheel can control the movable material frame to be close to or away from the fixed material frame, the frame body is provided with a locking structure used for locking the synchronous belt, the locking structure comprises a locking seat, a pressing block, a retaining plate and a reset torsion spring, the pressing block is rotationally arranged on the locking seat through a rotating shaft, and the retaining plate is arranged on the locking seat. The pressing block is arranged at the bottom of the locking seat and always gets close to the bottom of the locking seat through the reset torsion spring, and the retaining plate is rotationally arranged at the middle end of the pressing block and can control the pressing block to keep a certain distance from the bottom of the locking seat. According to the pcb material rack with the locking structure, the distance can be adjusted without pulling the locking structure all the time.

Description

Technical Field

[0001] This utility model belongs to the field of PCB material rack technology, and specifically refers to a PCB material rack with a locking structure. Background Technology

[0002] In the field of electronics manufacturing, the manufacturing, testing and assembly of PCB boards are often involved. Since PCB boards are relatively fragile and there are many of them, there are certain risks during transportation. Therefore, special racks for transporting and storing PCB boards have emerged in the market. Most racks on the market store PCB boards by adjusting the width with screws, which is cumbersome to adjust, has low dimensional adjustment accuracy, low efficiency, and complicated parts replacement.

[0003] A domestic database has published a utility model application with application number 201922469716.7, entitled "Anti-static SMT Loading and Unloading Rack." It includes an adjusting handle, a tensioning block, a lead screw, a bearing mounting base, a fixing block, and a base plate. A scale is fixedly connected to the top of the base plate. The base plate is U-shaped, and a U-shaped groove is bolted to the inner wall of the front end. A shaft locking device is fixedly connected to one side of the tensioning block, which is movably connected within the U-shaped groove. The adjusting handle is fixedly installed on one side of a synchronous pulley, which is fixedly sleeved on a shaft. The shaft passes through the shaft locking device at the end opposite to the synchronous pulley and is movably connected within the locking device. The shaft is fixedly sleeved within a bearing at the end near the shaft locking device. Two sets of bearing mounting bases are fixedly connected to the inner walls of the base plate, one at the front end and the other at the rear end. Each group of bearing mounting seats comprises four bearing mounting seats, located at the four corners of the base plate. An M3 type synchronous pulley is fixedly sleeved on one end of each lead screw. The four lead screws are movably connected to the bearing mounting seats at the front and rear ends of the base plate. A copper nut is movably sleeved on each lead screw, and a pointer is fixedly installed on the copper nut. A fixing block is fixedly connected to the bottom end of the copper nut, and the end of the fixing block offset from the copper nut is fixedly connected to a groove plate. The groove plate is movably connected to the lead screw via the fixing block. A belt is provided on the synchronous pulley, which is connected to the M3 type synchronous pulley via the belt. This invention allows for quick width adjustment and locking via a shaft lock. While it solves the aforementioned technical problems, the shaft lock is integrated with the adjusting handle, making the overall structure complex. Over time, the shaft lock may loosen, making maintenance inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a PCB material rack with a locking structure that is simple in structure, easy to install and use, and can adjust the distance without constantly moving the locking structure.

[0005] The purpose of this utility model is achieved as follows:

[0006] A PCB material rack with a locking structure includes a frame body, on which a fixed material rack and a movable material rack are mounted. The movable material rack is slidably mounted within the frame body via four sets of screw and nut structures, which are connected by a timing belt. The timing belt is connected to an adjusting handwheel, which controls the movable material rack to move closer to or further away from the fixed material rack. The frame body is provided with a locking structure for locking the timing belt. The locking structure includes a locking seat, a pressure block, a retaining plate, and a return torsion spring. The pressure block is rotatably mounted on the locking seat via a rotating shaft and is always close to the bottom of the locking seat via the return torsion spring. The retaining plate is rotatably mounted on the middle end of the pressure block and can control the pressure block to maintain a certain distance from the bottom of the locking seat. The timing belt is at least partially located below the pressure block.

[0007] In the aforementioned PCB rack with a locking structure, one end of the retaining plate is provided with a support portion at an angle, and the locking seat is provided with a limiting portion to restrict the rotation of the support portion.

[0008] In the aforementioned PCB rack with a locking structure, several embedded protrusions are provided below the pressure block.

[0009] In the aforementioned PCB rack with a locking structure, the embedded protrusions are equidistantly arranged at the lower end of the pressure block.

[0010] In the aforementioned PCB rack with a locking structure, the rack body is provided with a mounting groove for accommodating the locking seat.

[0011] In the aforementioned PCB rack with a locking structure, the reset torsion spring is sleeved on the rotating shaft, and its two ends abut against the pressure block and the locking seat, respectively.

[0012] In the aforementioned PCB rack with a locking structure, two mutually attractive magnetic components, namely magnetic component one and magnetic component two, are respectively provided on the pressure block and the retaining plate.

[0013] In the aforementioned PCB rack with a locking structure, the pressure block and the retaining plate are respectively provided with mounting holes for accommodating magnetic component one and magnetic component two.

[0014] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0015] The retaining plate and the support on the retaining plate designed in this utility model are for the convenience of operators. When it is necessary to lock the timing belt, the pressure block is pressed onto the timing belt by means of the reset torsion spring. When it is necessary to adjust the distance between the movable material rack and the fixed material rack, the pressure block needs to be moved away from the timing belt. The support on the retaining plate, together with the limiting part on the locking seat, makes it possible to have a gap between the pressure block and the timing belt. This makes it easy to adjust the handwheel to drive the timing belt to rotate. The overall adjustment is convenient and the overall structure is relatively simple. Attached Figure Description

[0016] Figure 1 This is a simplified structural diagram of the present invention;

[0017] Figure 2 This is an exploded view of the material rack and locking structure of this utility model;

[0018] Figure 3 This is an enlarged view of point A of this utility model;

[0019] Figure 4 This is one of the schematic diagrams of the locking structure of this utility model;

[0020] Figure 5 This is the second schematic diagram of the locking structure of this utility model;

[0021] Figure 6 This is the third schematic diagram of the locking structure of this utility model.

[0022] 1-Frame; 2-Fixed rack; 3-Movable rack; 4-Locking structure; 11-Mounting slot;

[0023] 31-Screw and nut structure; 32-Synchronous belt; 33-Adjusting handwheel; 41-Locking seat; 42-Pressure block; 43-Retaining plate; 44-Reset torsion spring; 45-Magnetic component one; 46-Magnetic component two; 48-Rotating shaft; 421-Embedded protrusion;

[0024] 431 - Support part; 432 - Limiting part. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0026] like Figures 1-6As shown: A PCB material rack with a locking structure includes a frame 1, on which a fixed material rack 2 and a movable material rack 3 are disposed. The movable material rack 3 is slidably disposed within the frame 1 via four sets of screw and nut structures 31, and the four sets of screw and nut structures 31 are connected by a synchronous belt 32, which is connected to an adjusting handwheel 33. The adjusting handwheel 33 can control the movable material rack 3 to move closer to or away from the fixed material rack 2. The frame 1 is provided with a locking structure 4 for locking the synchronous belt 32. The locking structure 4 includes a locking seat 41, a pressure block 42, a retaining plate 43, and a return torsion spring 44. The pressure block 42 is rotatably disposed on the locking seat 41 via a rotating shaft 48, and is always close to the bottom of the locking seat 41 by the return torsion spring 44. The retaining plate... The retaining plate 43 is rotatably mounted on the middle end of the pressure block 42, and can control the pressure block 42 to maintain a certain distance from the bottom of the locking seat 41. The synchronous belt 32 is at least partially located below the pressure block 42. One end of the retaining plate 43 is inclinedly provided with a support part 431. The locking seat 41 is provided with a limiting part 432 to restrict the rotation of the support part 431. Specifically, the support part is designed to facilitate the use of the operator. When the synchronous belt needs to be locked, the pressure block is pressed against the synchronous belt by means of a reset torsion spring. When it is necessary to adjust the distance between the movable material rack and the fixed material rack, the pressure block needs to be pried to move the pressure block away from the synchronous belt. The support part of the retaining plate, together with the limiting part on the locking seat, makes it possible to have a gap between the pressure block and the synchronous belt. This makes it convenient to adjust the handwheel to drive the synchronous belt to rotate, and the overall adjustment is convenient.

[0027] In the aforementioned PCB rack with locking structure, several embedding protrusions 421 are provided below the pressure block 42. The embedding protrusions 421 are equidistantly arranged at the lower end of the pressure block 42. Specifically, the embedding protrusions are designed to be embedded in the tooth groove of the timing belt. When the pressure block is embedded in the tooth groove of the timing belt, the timing belt can be locked and cannot move.

[0028] In the aforementioned PCB rack with a locking structure, the rack body 1 is provided with a mounting groove 11 for accommodating the locking seat 41. Specifically, this ensures that the locking seat will not move, thereby improving the installation stability of the locking seat.

[0029] In the aforementioned PCB rack with a locking structure, the reset torsion spring 44 is sleeved on the rotating shaft 48, and its two ends abut against the pressure block 42 and the locking seat 41 respectively. Specifically, the pressure block can always be close to the bottom of the locking seat.

[0030] In the aforementioned PCB rack with a locking structure, the pressure block 42 and the retaining plate 43 are respectively provided with two mutually attractive magnetic components 45 and 46. The pressure block 42 and the retaining plate 43 are respectively provided with mounting holes to accommodate the magnetic components 45 and 46. Specifically, both magnetic components can be magnets, or one of magnetic components can be a magnet and the other can be an iron product. As long as they can attract each other, it can be ensured that the retaining plate can fit against the locking seat in the locked state.

[0031] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A PCB rack with a locking structure, comprising a rack body (1), characterized in that: The frame (1) is provided with a fixed material rack (2) and a movable material rack (3). The movable material rack (3) is slidably disposed within the frame (1) via four sets of screw and nut structures (31), and the four sets of screw and nut structures (31) are connected by a synchronous belt (32). The synchronous belt (32) is connected to an adjusting handwheel (33), which can control the movable material rack (3) to move closer to or away from the fixed material rack (2). The frame (1) is provided with a locking structure (4) for locking the synchronous belt (32). The locking structure (4) includes a locking seat (41), a pressure block (42), a retaining plate (43), and a return torsion spring (44). The pressure block (42) is rotatably mounted on the locking seat (41) via a rotating shaft (48), and is always close to the bottom of the locking seat (41) via the return torsion spring (44). The retaining plate (43) is rotatably mounted on the middle end of the pressure block (42), and can control the pressure block (42) to maintain a certain distance from the bottom of the locking seat (41). The synchronous belt (32) is at least partially located below the pressure block (42).

2. The PCB rack with a locking structure according to claim 1, characterized in that: The retaining plate (43) has a support part (431) at one end at an inclination, and the locking seat (41) has a limiting part (432) on it to restrict the rotation of the support part (431).

3. The PCB rack with a locking structure according to claim 2, characterized in that: The pressure block (42) has several embedded protrusions (421) below it.

4. The PCB rack with a locking structure according to claim 3, characterized in that: The embedded protrusions (421) are equidistantly arranged at the lower end of the pressure block (42).

5. The PCB rack with a locking structure according to claim 1, 2, 3, or 4, characterized in that: The frame (1) is provided with a mounting groove (11) for accommodating the locking seat (41).

6. The PCB rack with a locking structure according to claim 5, characterized in that: The reset torsion spring (44) is sleeved on the rotating shaft (48), and its two ends abut against the pressure block (42) and the locking seat (41) respectively.

7. The PCB rack with a locking structure according to claim 6, characterized in that: The pressure block (42) and the retaining plate (43) are respectively provided with two mutually attractive magnetic components one (45) and two magnetic components two (46).

8. The PCB rack with a locking structure according to claim 7, characterized in that: The pressure block (42) and the retaining plate (43) are respectively provided with mounting holes for accommodating magnetic component one (45) and magnetic component two (46).

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