PCB (Printed Circuit Board) material rack structure

Abstract

The utility model relates to a PCB (printed circuit board) material rack structure, which belongs to the technical field of PCB transportation and storage tools, and comprises a rack body, a fixed material rack and a movable material rack, the fixed material rack is fixed in the rack body, the movable material rack is arranged on the rack body in a sliding manner through four groups of screw-nut structures, the four groups of screw-nut structures are connected through a synchronous belt, and the synchronous belt is connected with the fixed material rack. A synchronous belt is arranged on the frame body and connected with an adjusting hand wheel, the adjusting hand wheel can control the movable material frame to be close to or away from the fixed material frame, a locking structure used for locking the synchronous belt is arranged on the frame body, and limiting devices are arranged at the two ends of the movable material frame. The locking structure is simple to use and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB board transportation and storage tools, in particular to a PCB board material rack structure. Background Art

[0002] In the field of electronics manufacturing, the manufacture, testing, and assembly of PCBs are often involved. Since PCBs are relatively fragile and there are many of them, there are certain risks in the transportation process. Therefore, special racks for transporting and storing PCBs have appeared on the market. Most racks on the market store PCBs by adjusting the width with screws. This is difficult to adjust, has low size adjustment accuracy, low efficiency, and cumbersome parts replacement.

[0003] The domestic database has disclosed an application number of 201922469716.7, and the patent name is a utility model of an anti-static SMT loading and unloading rack, which includes an adjusting handle, a tensioning block, a screw rod, a bearing fixing seat, a fixing block and a base plate. A ruler is fixedly connected to the top of the base plate, the base plate is U-shaped, and a U-shaped groove is fixedly connected to the inner wall of the front end of the base plate by bolts. One side of the tensioning block is fixedly connected to a shaft locker, and the tensioning block is movably connected to the U-shaped groove. The adjusting handle is fixedly installed on one side of the synchronous pulley, and the synchronous pulley is fixedly sleeved on the shaft. The end of the shaft deviates from the synchronous pulley passes through the shaft locker and is movably connected in the shaft locker. The end of the shaft close to the shaft locker is fixedly sleeved in the bearing, and the bearing fixing seat is fixedly connected to the inner wall of the base plate. There are two groups of bearing fixing seats, and the two groups of bearing fixing seats are respectively fixedly connected to the inner walls of the front and rear ends of the base plate. There are four bearing fixing seats in each group, and the four bearing fixing seats The seats are respectively located at the four corners of the base plate, and an M3 type synchronous pulley is fixedly sleeved on one end of the screw rod, and the number of the screw rods is four, and the four screw rods are movably connected to the bearing fixing seats on the front and rear ends of the base plate respectively, and a copper nut is movably sleeved on the screw rod, and a pointer is fixedly installed on the copper nut. The fixed block is fixedly connected to the bottom end of the copper nut, and the fixed block is fixedly connected to the slot plate at one end deviating from the copper nut, and the slot plate is movably connected to the screw rod through the fixed block, and a belt is provided on the synchronous pulley, and the synchronous pulley is connected to the M3 type synchronous pulley through the belt. The above utility model can quickly adjust the width and lock it through a shaft lock. Although the above technical problems are solved, the shaft lock and the adjustment handle are arranged together, which makes the overall structure more complicated. After long-term use, the shaft lock will loosen, which is inconvenient to maintain, and there is no limit device to limit the movement of the PCB board. If the PCB board slips in the material rack, it will cause great losses. Utility Model Content

[0004] The purpose of the utility model is to provide a PCB board rack structure with a reasonable structure, a PCB board limiting device, a locking structure that is simple to use and easy to assemble and disassemble.

[0005] The purpose of this utility model is achieved in this way:

[0006] A PCB board rack structure includes a frame body, a fixed rack and a movable rack. The fixed rack is fixed in the frame body, and the movable rack is slidably arranged on the frame body via four sets of screw and nut structures. The four sets of screw and nut structures are connected by a synchronous belt, and the synchronous belt is connected to an adjusting handwheel. The adjusting handwheel can control the movable rack to approach or move away from the fixed rack. A locking structure for locking the synchronous belt is provided on the frame body, and limiting devices are provided at both ends of the movable rack.

[0007] In the above-mentioned PCB board rack structure, the locking structure includes a locking frame, a locking member and a driving handle. The locking frame is fixed on the frame body, the locking member is inserted into the locking frame, and the driving handle is rotatably set at the lower end of the locking frame. One end of the locking member extends out of the locking frame, and the other end thereof contacts the driving handle, and the driving handle can control the locking member to move upward to lock the synchronous belt on the frame body.

[0008] In the above-mentioned PCB board rack structure, an elastic member is provided between the locking member and the locking rack, and the upper end portion of the locking member is always away from the synchronous belt under the action of the elastic member.

[0009] In the above-mentioned PCB board rack structure, the elastic member is a spring, which is sleeved on the locking member, and one end of the elastic member abuts against the locking frame, and the other end abuts against the middle end of the locking member.

[0010] In the above-mentioned PCB board rack structure, a locking plate is provided at the upper end of the locking member, and a ball is rotatably provided at the lower end thereof.

[0011] In the above-mentioned PCB board rack structure, the driving handle includes a handle and a driving block connected to each other, the driving block is rotatably arranged on the locking frame through a rotating shaft, and a lifting portion and a retracting portion are provided on the driving block, and a transition arc is provided between the lifting portion and the retracting portion.

[0012] In the above-mentioned PCB board rack structure, the limit device includes an upper limit sleeve, a lower connecting sleeve, a limit rod and a spring. The upper and lower ends of the limit rod are bent to form an upper guide rod and a lower guide rod. The upper guide rod is inserted into the upper limit sleeve, and the lower guide rod is inserted into the lower connecting sleeve. The spring is sleeved in the upper guide rod. The two ends of the spring respectively abut against the end of the upper guide rod and the lower end of the upper limit sleeve. A limit slot is provided on the upper limit sleeve, and the limit rod can change direction in the limit slot.

[0013] In the above-mentioned PCB board rack structure, the limiting rod and the movable rack are at an angle of 90 degrees.

[0014] In the above-mentioned PCB board rack structure, a guide rod is formed by extending downward from the lower end of the limiting rod, and a guide groove for cooperating with the guide rod is provided on the rack body.

[0015] In the above-mentioned PCB board rack structure, the adjusting hand wheel and the locking frame are fixed on the same support rod.

[0016] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0017] The frame of the utility model is provided with a locking structure and a limiting device is provided on the movable material rack, which is mainly used to lock the synchronous belt through the locking structure after the position between the movable material rack and the fixed material rack is adjusted to prevent the synchronous belt from continuing to rotate and causing the movable material rack to move. The limiting device is provided on the movable material rack to limit the movement of the placed PCB board and prevent the PCB board from slipping from the movable material rack and the fixed material rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model.

[0019] Figure 2 It is an enlarged view of point A of the present utility model.

[0020] Figure 3 This is one of the schematic diagrams of the locking structure of the present utility model.

[0021] Figure 4 It is a cross-sectional view of the locking structure of the utility model.

[0022] Figure 5 This is the second schematic diagram of the locking structure of the utility model.

[0023] Figure 6 It is a structural schematic diagram of the movable material rack of the utility model.

[0024] Figure 7 It is an exploded view of the limiting device of the utility model.

[0025] Figure 8 It is an enlarged view of point B of the present utility model.

[0026] 1-frame; 2-fixed material rack; 3-movable material rack; 4-locking structure; 5-support rod;

[0027] 31-screw nut structure; 32-synchronous belt; 33-adjusting handwheel; 34-limiting device; 41-locking frame; 42-locking member; 43-driving handle; 44-elastic member; 341-upper limit sleeve; 342-lower connecting sleeve;

[0028] 343-limiting rod; 344-spring; 345-upper guide rod; 346-lower guide rod; 347-limiting slot;

[0029] 348 - guide rod; 349 - guide groove; 421 - ball bearing; 422 - locking plate; 431 - handle; 432 - drive block; 4321 - lifting part; 4322 - retracting part; 4323 - transition arc. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to specific embodiments of the present invention:

[0031] like Figures 1-8 The figure shows: a PCB board rack structure, including a frame 1, a fixed material rack 2 and a movable material rack 3, the fixed material rack 2 is fixed in the frame body 1, the movable material rack 3 is slidably set on the frame body 1 through four sets of screw nut structures 31, the four sets of screw nut structures 31 are connected by synchronous belts 32, and the synchronous belt 32 is connected to the adjusting handwheel 33, and the adjusting handwheel 33 can control the movable material rack 3 to approach or move away from the fixed material rack. The frame body is provided with a locking structure 4 for locking the synchronous belt 32, and the two ends of the movable material rack 3 are provided with limiting devices 34, and the frame body is provided with a locking structure and a limiting device is provided on the movable material rack. It is mainly used to lock the synchronous belt through the locking structure after adjusting the position between the movable material rack and the fixed material rack to prevent the synchronous belt from continuing to rotate and causing the movable material rack to move, and the limiting device is provided on the movable material rack to limit the movement of the placed PCB board and prevent the PCB board from slipping from the movable material rack and the fixed material rack.

[0032] In the above-mentioned PCB board rack structure, the locking structure 4 includes a locking frame 41, a locking member 42 and a driving handle 43. The locking frame 41 is fixed to the frame body 1, and the locking member 42 is arranged in the locking frame 41. The driving handle 43 is rotatably arranged at the lower end of the locking frame 41. One end of the locking member 42 extends out of the locking frame 41, and the other end contacts the driving handle 43. The driving handle 43 can control the locking member 42 to move upward to lock the synchronous belt 32 on the frame body 1. The locking member 42 and the locking frame 41 are in a state of rotation. An elastic member 44 is provided, and the upper end of the locking member 42 is always away from the synchronous belt 32 under the action of the elastic member 44. When the movable material rack needs to be fixed, it is only necessary to pull the driving handle, and the driving handle pushes the locking member to move upward to lock the synchronous belt, so that the movable material rack will not move; when the distance of the movable material rack needs to be adjusted, the driving handle is pulled, and the driving handle returns to the set position, and the locking member will be away from the synchronous belt due to the elasticity of the spring, so that the user can make adjustments by adjusting the hand wheel, and the overall structure is simple, and maintenance and installation are convenient.

[0033] In the above-mentioned PCB board rack structure, the elastic member 44 is a spring, and the elastic member 44 is sleeved on the locking member 42, and one end of the elastic member 44 rests on the locking frame 41, and the other end rests on the middle end of the locking member 42. The upper end of the locking member 42 is provided with a locking plate 422, and the lower end thereof is rotatably provided with a ball 421. The middle end of the elastic member is penetrated by a guide rod, and the locking frame is provided with a guide groove for the guide rod to slide up and down. Specifically, this is to reduce the friction between the locking member and the driving handle, extend the service life of the locking member, and the locking member can move in one direction without rotation.

[0034] In the above-mentioned PCB board rack structure, the driving handle 43 includes a handle 431 and a driving block 432 that are connected to each other. The driving block 432 is rotatably arranged on the locking frame 41 through a rotating shaft, and a lifting portion 4321 and a retracting portion 4322 are provided on the driving block 432. A transition arc 4323 is provided between the lifting portion 4321 and the retracting portion 4322. Specifically, this is to facilitate the locking member to switch back and forth between the lifting portion and the retracting portion to ensure smoothness.

[0035] In the above-mentioned PCB board rack structure, the limiting device 34 includes an upper limit sleeve 341, a lower connecting sleeve 342, a limiting rod 343 and a spring 344. The upper and lower ends of the limiting rod 343 are bent to form an upper guide rod 345 and a lower guide rod 346. The upper guide rod 345 is inserted into the upper limit sleeve 341, and the lower guide rod 346 is inserted into the lower connecting sleeve 342. The spring 344 is sleeved in the upper guide rod 345. The two ends of the spring 344 respectively abut against the end of the upper guide rod 345 and the lower end of the upper limit sleeve 341. A limiting slot 347 is provided on the upper limit sleeve 341, and the limiting rod 343 can change direction in the limiting slot 347. Specifically, when the PCB board needs to be placed, the limiting rod can be rotated to a direction away from the fixed material rack. After the PCB board is placed, the limiting rod can be rotated and set to its original position. The specific working principle of the limiting device is to pull the limiting rod upward so that the connecting rod between the limiting rod and the upper guide rod is disengaged from the limiting slot, and the position of the limiting rod is rotated. At the same time, the upper guide rod uses the elasticity of the spring to make the limiting rod always move downward. After adjusting the position, it can be released.

[0036] In the above-mentioned PCB board rack structure, the limit rod 343 is at 90° with the movable rack 3. Specifically, even if the limit rod changes position in the limit slot, the limit rod will maintain 90° with the limit slot, which can ensure that the PCB board will not fall off.

[0037] In the above-mentioned PCB board rack structure, the lower end of the limit rod 343 extends downward to form a guide rod 348, and the frame body 1 is provided with a guide groove 349 used to cooperate with the guide rod 348. Specifically, this is so that the guide rod can be used in conjunction with the limit groove to further ensure the stability of use and prevent the PCB board from falling off.

[0038] In the above-mentioned PCB board rack structure, the adjusting handwheel 33 and the locking frame 41 are fixed on the same support rod 5. Specifically, the support rod is a U-shaped structure, and the locking frame is provided with a connecting hole, and the support rod is provided with a bar groove. The two are connected by bolts. The adjusting handwheel is connected to the support rod through a connecting rod. The connecting rod is provided with a bar groove, and the support rod is provided with a fixing column used in conjunction with the bar groove, and the two are connected by bolts.

[0039] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A PCB board rack structure, comprising a frame body (1), a fixed rack (2) and a movable rack (3), characterized in that: The fixed material rack (2) is fixed in the frame (1), and the movable material rack (3) is slidably arranged on the frame (1) through four sets of screw rod and nut structures (31). The four sets of screw rod and nut structures (31) are connected by a synchronous belt (32), and the synchronous belt (32) is connected to an adjusting hand wheel (33). The adjusting hand wheel (33) can control the movable material rack (3) to approach or move away from the fixed material rack (2). A locking structure (4) for locking the synchronous belt (32) is provided on the frame (1), and limiting devices (34) are provided at both ends of the movable material rack (3).

2. The PCB board rack structure according to claim 1, characterized in that: The locking structure (4) comprises a locking frame (41), a locking member (42) and a driving handle (43); the locking frame (41) is fixed on the frame body (1); the locking member (42) is inserted into the locking frame (41); the driving handle (43) is rotatably arranged at the lower end of the locking frame (41); one end of the locking member (42) extends out of the locking frame (41) and the other end contacts the driving handle (43); and the driving handle (43) can control the locking member (42) to move the synchronous belt (32) on the locking frame body (1) upward.

3. The PCB board rack structure according to claim 2, characterized in that: An elastic member (44) is provided between the locking member (42) and the locking frame (41), and the upper end portion of the locking member (42) is always away from the synchronous belt (32) under the action of the elastic member (44).

4. The PCB board rack structure according to claim 3, characterized in that: The elastic member (44) is a spring, and the elastic member (44) is sleeved on the locking member (42). One end of the elastic member (44) abuts against the locking frame (41), and the other end abuts against the middle end of the locking member (42).

5. The PCB board rack structure according to claim 4, characterized in that: The upper end of the locking member (42) is provided with a locking plate (422), and the lower end thereof is rotatably provided with a ball (421).

6. The PCB board rack structure according to claim 2, 3, 4 or 5, characterized in that: The driving handle (43) comprises a handle (431) and a driving block (432) connected to each other. The driving block (432) is rotatably arranged on the locking frame (41) via a rotating shaft. The driving block (432) is provided with a lifting portion (4321) and a retracting portion (4322). A transition arc (4323) is provided between the lifting portion (4321) and the retracting portion (4322).

7. The PCB board rack structure according to claim 1 or 2, characterized in that: The limiting device (34) comprises an upper limiting sleeve (341), a lower connecting sleeve (342), a limiting rod (343) and a spring (344). The upper and lower ends of the limiting rod (343) are bent to form an upper guide rod (345) and a lower guide rod (346). The upper guide rod (345) is inserted into the upper limiting sleeve (341), and the lower guide rod (346) is inserted into the lower connecting sleeve (342). The spring (344) is sleeved in the upper guide rod (345). The two ends of the spring (344) respectively abut against the end of the upper guide rod (345) and the lower end of the upper limiting sleeve (341). A limiting groove (347) is provided on the upper limiting sleeve (341), and the limiting rod (343) can change direction in the limiting groove (347).

8. The PCB board rack structure according to claim 7, characterized in that: The limiting rod (343) and the movable material rack (3) are at an angle of 90 degrees.

9. The PCB board rack structure according to claim 7, characterized in that: The lower end of the limiting rod (343) extends downward to form a guide rod (348), and the frame (1) is provided with a guide groove (349) used in conjunction with the guide rod (348).

10. The PCB board rack structure according to claim 2, characterized in that: The adjusting hand wheel (33) and the locking frame (41) are fixed on the same support rod (5).

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