Modular integrated locking and extraction device

Abstract

The application discloses a module integrated locking and pulling assisting device, which comprises a forward wedge locking mechanism, a reverse wedge locking mechanism, a pulling assisting mechanism and a rotating screw rod, the forward wedge locking mechanism and the reverse wedge locking mechanism are coaxially installed on the rotating screw rod, wedge blocks on the forward wedge locking mechanism and the reverse wedge locking mechanism are driven to move towards each other by the rotating screw rod, the pulling assisting mechanism is installed on the end of the rotating screw rod and is used for manually controlling the rotating screw rod. The wedge blocks on both sides of the locking and pulling assisting mechanism are uniformly stressed, have strong anti-shock and anti-vibration capability, are high in reliability, are convenient to operate, do not need to be additionally assisted by other tools and are high in assembly efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic product (equipment) locking and pulling aid, and particularly relates to a module integrated locking and pulling aid device. BACKGROUND

[0002] With the rapid development of the aerospace industry in China, control computers gradually develop in the direction of miniaturization and modularization. Modular design has standard sizes and interfaces. Compared with previous technologies, it has the characteristics of high standardization, high system reliability, good maintainability, strong deepening upgrade capability, short development cycle and low full-life cost.

[0003] The modules in electronic products (equipment) are fixed in a case or a plug-in box, and a locking strip is usually used. The locking strip is generally a long bolt that penetrates through a plurality of wedge-shaped blocks as a whole or in part. By rotating the long bolt, the wedge-shaped blocks change the relative positions through the inclined surfaces, so that the height of part of the wedge-shaped blocks increases, thereby quickly locking the board or module in the case, thereby ensuring the reliability of the electrical connection between the module and the backplane of the case and the anti-shock strength of the module itself. During the installation and removal of the modules in the electronic products (equipment) in the case, an aid puller is usually used. The aid puller can ensure the accuracy of the installation distance between the module and the backplane of the case by positioning with the corresponding installation table in the case and rotating the extension end around the fulcrum to drive the module to slide in the slot of the case, thereby ensuring the electrical connection reliability between the module and the backplane of the case under the condition that the distance between the modules in the case is small.

[0004] However, the current locking and pulling aid device has the following defects:

[0005] (1) Single stress direction. The traditional locking strip generates a pushing force on the adjacent wedge-shaped blocks by rotating the long bolt, thereby driving the remaining wedge-shaped blocks to slide to one side, so that the wedge-shaped blocks form a height difference. In this process, because the pushing force is transmitted to each wedge-shaped block through one side, uneven stress is easily generated, thereby affecting the effect of the module.

[0006] (2) Complex disassembly and installation. The traditional locking strip needs a screwdriver or other tools to realize locking and disassembly. It does not meet the requirement of rapid assembly during the disassembly and assembly of the modular case. When the wedge-shaped blocks of the locking strip are not tightened, the parts can move relative to each other, the heights are inconsistent, and the module may be blocked when inserted into the case, thereby affecting assembly.

[0007] (3) The locking and pulling aid are two independent mechanisms. The pulling aid device is installed in other positions of the module, occupies too much space of the module, and increases the number of parts in the mechanism, which does not meet the miniaturization design concept and increases the production cost. SUMMARY

[0008] In view of the above technical problems, the application provides a module integrated locking and pulling assisting mechanism, the wedge blocks on both sides of the locking and pulling assisting mechanism are uniformly stressed, the anti-vibration capacity is high, the reliability is high, the operation is convenient, no other tools are needed, and the assembly efficiency is high.

[0009] The module integrated locking and pulling assisting device comprises a forward wedge-shaped locking mechanism, a reverse wedge-shaped locking mechanism, a pulling assisting mechanism and a rotating screw rod, the forward wedge-shaped locking mechanism and the reverse wedge-shaped locking mechanism are coaxially installed on the rotating screw rod, the wedge blocks on the forward wedge-shaped locking mechanism and the reverse wedge-shaped locking mechanism are driven to move towards each other by the rotating screw rod, and the pulling assisting mechanism is installed at the end of the rotating screw rod and is used for manually controlling the rotating screw rod.

[0010] As a preferred technical scheme of the above technical scheme, the rotating screw rod comprises, from left to right, a bearing mounting section, a forward rotating thread section, a reverse rotating thread section, a light shaft section and a pulling assisting device mounting lug.

[0011] As a preferred technical scheme of the above technical scheme, the forward wedge-shaped locking mechanism comprises a base one, a wedge block one, a bearing, a bearing snap spring retainer ring and a forward rotating nut sliding block, the wedge block one is installed on the base one, the base one is provided with a sliding rail parallel to the inclined surface of the wedge block one, the bearing is fixed in the base one, the bearing mounting section is fixedly connected with the inner ring of the bearing, the bearing snap spring retainer ring is arranged on the end surface of the bearing, the forward rotating nut sliding block is connected to the forward rotating thread section, and the wedge block one abuts against the forward rotating nut sliding block.

[0012] As a preferred technical scheme of the above technical scheme, the reverse wedge-shaped locking mechanism comprises a base two, a wedge block two and a reverse rotating nut sliding block, the wedge block two is installed on the base two, the base two is provided with a sliding rail parallel to the inclined surface of the wedge block two, the reverse rotating nut sliding block is connected to the reverse rotating thread section, the wedge block two abuts against the reverse rotating nut sliding block, and the base two is provided with a through hole for the light shaft section to pass through.

[0013] As a preferred technical scheme of the above technical scheme, the pulling assisting mechanism comprises a pulling assisting plate and a cylindrical pin, and the pulling assisting plate is connected with the pulling assisting device mounting lug through the cylindrical pin.

[0014] As a preferred technical scheme of the above technical scheme, the pulling assisting plate and the cylindrical pin form a lever structure.

[0015] The application has the following beneficial effects:

[0016] 1. The wedge blocks are pushed by the rotation of the threads in the forward and reverse directions, so that the wedge blocks on both sides are uniformly stressed, the phenomenon that the traditional locking strips are not uniformly stressed because the pushing force is transmitted to the wedge blocks on one side is solved, the reliability of the device is increased, and the anti-vibration capacity of the device is improved.

[0017] 2. By rotating the lifting plate in horizontal state by hand, the tool-free locking operation is realized under the condition of compact distance between modules in the case, and the blocking phenomenon of each wedge block in the unlocked state when the module with traditional locking device is inserted into the case is solved, so that the requirements of fast assembly and disassembly of the module are realized.

[0018] 3. The traditional locking strip and the lifting device are integrated into one locking and lifting device, the design space of the module is saved, the production cost is saved, and the design concept of miniaturization and integration is realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present application.

[0020] Figure 2 It is a sectional view of the present application.

[0021] Figure 3 It is a structural schematic diagram of the rotating screw.

[0022] Figure 4 It is an operation flowchart of the present application.

[0023] Figure 5 It is a flowchart of installing a 3U specification LRM module by using the device.

[0024] Figure 6 It is Figure 5 the overall structural schematic diagram.

[0025] The reference signs are as follows: 1 - forward wedge locking mechanism, 101 - base one, 102 - wedge block one, 103 - bearing, 104 - bearing spring retainer ring, 105 - forward rotating nut sliding block, 2 - reverse wedge locking mechanism, 201 - base two, 202 - wedge block two, 203 - reverse rotating nut sliding block, 3 - lifting mechanism, 301 - lifting plate, 302 - cylindrical pin, 4 - rotating screw, 401 - bearing mounting section, 402 - forward rotating thread section, 403 - reverse rotating thread section, 404 - optical axis section, 405 - lifting device mounting lug, 5 - through hole, 6 - slot, 7 - boss. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly and completely in combination with the drawings of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0027] A module integrated locking and pulling assisting device as shown in FIG. 1 to FIG. 3, comprising a positive wedge locking mechanism 1, a reverse wedge locking mechanism 2, a pulling assisting mechanism 3 and a rotating screw 4, the positive wedge locking mechanism 1 and the reverse wedge locking mechanism 2 are coaxially installed on the rotating screw 4, the wedge blocks on the positive wedge locking mechanism 1 and the reverse wedge locking mechanism 2 are driven to move towards each other by the rotating screw 4, the pulling assisting mechanism 3 is installed at the end of the rotating screw 4 for manually controlling the rotating screw 4.

[0028] In this embodiment, the rotating screw 4 from left to right is sequentially a bearing installation section 401, a positive rotating thread section 402, a reverse rotating thread section 403, a light axis section 404 and a pulling assisting device installation ear 405.

[0029] In this embodiment, the positive wedge locking mechanism 1 comprises a base 101, a wedge block 102, a bearing 103, a bearing snap spring retainer ring 104 and a positive rotating nut slider 105, the wedge block 102 is installed on the base 101, the base 101 is provided with a sliding rail parallel to the inclined surface of the wedge block 102, the bearing 103 is fixed in the base 101, the bearing installation section 401 is fixedly connected with the inner ring of the bearing 103, the bearing snap spring retainer ring 104 is arranged on the end surface of the bearing 103, the positive rotating nut slider 105 is connected on the positive rotating thread section 102, and the wedge block 102 abuts against the positive rotating nut slider 105.

[0030] In this embodiment, the reverse wedge locking mechanism 2 comprises a base 201, a wedge block 202 and a reverse rotating nut slider 203, the wedge block 202 is installed on the base 201, the base 201 is provided with a sliding rail parallel to the inclined surface of the wedge block 202, the reverse rotating nut slider 203 is connected on the reverse rotating thread section 403, the wedge block 202 abuts against the reverse rotating nut slider 403, and the base 201 is provided with a through hole 5 for the light axis section 404 to pass through.

[0031] In this embodiment, the pulling assisting mechanism 3 comprises a pulling assisting plate 301 and a cylindrical pin 302, the pulling assisting plate 301 is connected with the pulling assisting device installation ear 405 through the cylindrical pin 302.

[0032] In this embodiment, the pulling assisting plate 301 and the cylindrical pin 302 form a lever structure.

[0033] As Figure 4 To Figure 6As shown, taking the 3U specification LRM module installation as an example, the working principle of one installation and disassembly process of the above device is as follows:

[0034] S1: Place the pulling assisting plate 301 in a horizontal position relative to the rotating screw 4, after the module is inserted into the corresponding slot 6 in the cabinet, the front end of the pulling assisting plate 301 passes through the cabinet outside the boss 7, and the pulling assisting plate 301 is gradually rotated around the cylindrical pin 302 to a vertical position relative to the rotating screw 4, and through the reaction force of prying the boss 7 outside the cabinet by the pulling assisting plate 301, the module is pushed to the correct position in the cabinet.

[0035] S2: Place the pulling assisting plate 301 in a horizontal position relative to the rotating screw 4, then rotate the pulling assisting plate 301 around the cylindrical pin 302 by hand (tool-free operation), drive the rotating screw 4 to rotate, until the wedge block one 102 and the wedge block two 202 reach the maximum height, that is, the rotating screw 4 cannot continue to rotate. Then place the pulling assisting plate 301 in a vertical position relative to the rotating screw 4. At this time, the installation process of the module has been completed.

[0036] S3: Place the pulling assisting plate 301 in a horizontal position relative to the rotating screw 4, then rotate the pulling assisting plate 301 in the opposite direction by hand (tool-free operation) for several turns, until it is ensured that the wedge block one 102 and the wedge block two 202 are separated from the cabinet side wall.

[0037] S4: Apply pulling force to the pulling assisting plate 301 with your hand, and pull the module out of the cabinet as a whole. At this time, the disassembly process of the module has been completed.

[0038] It should be noted that:

[0039] 1. The above locking and pulling assisting device is suitable for modules that need to be fixed in a cabinet or a plug-in box, especially for modules that require anti-shock, quick disassembly, and compact structure and function.

[0040] 2. For modules of different sizes and structures, only the installation size of the module and the cabinet needs to be adjusted, and the size of each mechanism needs to be adjusted, so that the device can be compatible with various modules that need to be locked and pulled out.

[0041] 3、In the reverse wedge locking mechanism 2, the optical axis segment 404 of the rotating screw 4 passes through the base two 201, and the diameter size needs to be designed as H7 / g6 matching tolerance, so that they can be freely rotated and precisely positioned. The roughness requirement of the bottom surface of the positive rotation nut slider 105 and the reverse option nut slider 203 is high, which avoids the aging wear caused by multiple sliding. The puller 3 and the rotating screw 4 and other parts consider the transmission accuracy and load transmission, in order to prevent part deformation, high-strength steel material needs to be used, and heat treatment needs to be carried out in the processing process. The rest of the structure can adopt aluminum alloy structural parts.

[0042] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A modular integrated locking and pulling aid device, characterized in that: The system includes a forward wedge locking mechanism, a reverse wedge locking mechanism, a pull-out assist mechanism, and a rotating screw. The forward and reverse wedge locking mechanisms are coaxially mounted on the rotating screw. The wedge blocks on the forward and reverse wedge locking mechanisms move in opposite directions driven by the rotating screw. The pull-out assist mechanism is installed at the end of the rotating screw for manual control. The rotating screw, from left to right, consists of a bearing mounting section, a forward thread section, a reverse thread section, and a smooth shaft section. The forward wedge locking mechanism includes a base, a wedge block, a bearing, a bearing retaining ring, and a forward nut slider. The wedge block is mounted on the base, which has a... The sliding rail is parallel to the inclined surface of the first wedge block. The bearing is fixed inside the first base. The bearing mounting section is fixedly connected to the inner ring of the bearing. The bearing retaining ring is located on the end face of the bearing. The forward spiral nut slider is connected to the forward spiral thread section. The first wedge block abuts against the forward spiral nut slider. The reverse wedge locking mechanism includes a second base, a second wedge block, and a reverse spiral nut slider. The second wedge block is mounted on the second base. The second base has a sliding rail parallel to the inclined surface of the second wedge block. The reverse spiral nut slider is connected to the reverse spiral thread section. The second wedge block abuts against the reverse spiral nut slider. The second base has a through hole for the optical axis section to pass through.

2. The locking and pulling device according to claim 1, characterized in that: The rotating screw also includes a puller mounting ear fixed to the other end of the optical axis segment.

3. The locking and pulling device according to claim 2, characterized in that: The extraction assistance mechanism includes an extraction assistance plate and a cylindrical pin, wherein the extraction assistance plate is connected to the extraction assistance mounting ear via the cylindrical pin.

4. The locking and pulling device according to claim 3, characterized in that: The pull-out plate and the cylindrical pin form a lever structure.

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