Pulling assisting device

Abstract

A rotary seat is rotatably arranged on the outer side of a base, a clamping head and a shifting rod are arranged on the rotary seat in a linkage mode, the free end of the clamping head protrudes out of the rotary seat, and one end of the shifting rod and the free end of the clamping head protrude out of the rotary seat in the same direction and are in clearance fit with the clamping head so as to form an anti-disengaging groove allowing a communication case panel to be embedded. The other end of the deflector rod protrudes out of the rotary seat to form a power assisting part, and a rotary reset piece capable of driving the rotary seat to rotate around a fixed axis is connected between the base and the rotary seat; the base is further provided with a locking piece capable of limiting and locking the rotary seat and a control assembly which is in linkage fit with the locking piece to control the locking piece and the rotary seat to be assembled and disassembled in a matched mode. The unplugging assisting device can effectively improve the plugging operation efficiency of the PCB module in the communication case, so that the plugging operation is simpler and more convenient, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of communication chassis PCB module plugging and unplugging supporting equipment, in particular to an unplugging aid. Background Art

[0002] In recent years, with the continuous development of the communications industry, the demand for equipment applications in the field of communications technology has continued to increase. As a widely used device in the communications field, the demand for supporting equipment and operational convenience has also continued to increase.

[0003] Currently, in fields such as railway communications, communication chassis within large equipment rooms require large signal processing volumes, resulting in large-scale supporting communication modules. The PCB (printed circuit board) modules housed within these chassis, in particular, have numerous interfaces and pins, and the resulting compact assembly space makes insertion and removal of these modules challenging. This time-consuming and labor-intensive process not only increases worker workload but also limits the efficiency of both the PCB module insertion and removal operations and the associated communication chassis components.

[0004] Currently, in this field, pull-out aids are used to match the specific application of PCB modules, in an effort to improve the plug-in and pull-out operations of PCB modules in communication chassis. However, existing pull-out aids are usually relatively simple in structure, generally using only a single rod-type linkage, and utilizing the principle of leverage to assist in the operation process of pulling out or inserting the PCB module from the communication chassis. In actual operation, the improvement effect on the plug-in and pull-out operation process of the PCB module is not obvious, especially since the labor intensity of the staff is still high, the plug-in and pull-out operation process of the PCB module is still relatively cumbersome and laborious, and the corresponding plug-in and pull-out operation efficiency of the PCB module is not high, which restricts and inconveniences the operation and use of the corresponding communication chassis.

[0005] In view of this, how to optimize the component structure of the extraction aid, improve the efficiency of the plugging and unplugging operation of the PCB module in the communication chassis, make the plugging and unplugging operation simpler and easier, and reduce the labor intensity of the staff is an important technical problem that technical personnel in this field currently need to solve. Summary of the Invention

[0006] The purpose of the present invention is to provide an extraction aid, which can effectively improve the efficiency of plugging and unplugging operations of PCB modules in a communication chassis, making the plugging and unplugging operations simpler and easier, and reducing the labor intensity of staff.

[0007] In order to solve the above technical problems, the present invention provides an extraction aid, comprising a base fixed at the edge of the outer end surface of the PCB module, a rotary seat being rotatably provided on the outer side of the base, a clamping head and a shifting rod being linked to the rotary seat, the free end of the clamping head protruding from the rotary seat, one end of the shifting rod protruding from the rotary seat in the same direction as the free end of the clamping head and loosely cooperating with the clamping head to form an anti-slip groove for embedding a communication chassis panel, the other end of the shifting rod protruding from the rotary seat to form a power-assisting portion, and a rotary reset member capable of driving the rotary seat to rotate about a fixed axis is connected between the base and the rotary seat;

[0008] The base is also provided with a locking member capable of locking the swivel seat in a limited position, and a control component that cooperates with the locking member to control the disassembly and assembly of the locking member and the swivel seat.

[0009] Preferably, the locking member is a locking pin that can move back and forth along the extension direction of the rotation axis of the swivel seat, the control component includes a control block linked to the locking pin, and the shift rod has a locking hole for the locking pin to be inserted into the position to lock the shift rod.

[0010] Preferably, the middle part of the base has a waist-shaped hole, the control block is located in the waist-shaped hole and can move back and forth along the long axis direction of the waist-shaped hole, the long axis of the waist-shaped hole is parallel to the rotation axis of the rotating seat, and the assembly end of the locking pin passes through the side of the base along the long axis direction of the waist-shaped hole and extends into the waist-shaped hole.

[0011] Preferably, a compression spring is embedded between the assembly end of the locking pin and the inner wall of the waist-shaped hole, and the compression spring is coaxially adapted to the locking pin.

[0012] Preferably, an anti-skid touch plate is provided on the outer wall of the control block on one side facing the opening of the waist-shaped hole, and the anti-skid touch plate protrudes from the opening of the waist-shaped hole.

[0013] Preferably, the rotary restoring member is a torsion spring, and two ends of the torsion spring are respectively connected and adapted to the rotary seat and the base.

[0014] Preferably, a rotating casing is protruded from the rotating seat on one side facing the base, a reference casing is protruded from the base on one side facing the rotating seat and is coaxially aligned with the rotating casing, and the torsion spring is coaxially press-fitted between the reference casing and the rotating casing.

[0015] Preferably, a rotation limiting column is coaxially protruded from the middle of the rotation casing, and the torsion spring is coaxially sleeved on the rotation limiting column.

[0016] Preferably, the free end of the clamp head has an anti-slip hook bent toward the side where the anti-slip groove is located.

[0017] Preferably, the base, the swivel seat, the clamp and the shift rod are all made of zinc alloy.

[0018] Compared with the above background technology, the puller provided by the present invention is fixed at the top edge and / or bottom edge of the outer end surface of the PCB module during operation, and the clamping head of the puller located at the top edge of the PCB module is directed upward, and the free end of the clamping head of the puller located at the bottom edge of the PCB module is directed downward; the PCB module equipped with the puller is pushed into the communication chassis, and the anti-slip groove is kept moderately tilted with respect to the vertical direction until the panel of the communication chassis falls into the anti-slip groove and abuts against the inner wall of the anti-slip groove. At this time, the staff can manually press the auxiliary part to rotate the swivel seat moderately until the anti-slip groove flips to the vertical direction. In this way, the communication chassis panel can be reliably limited and clamped in the anti-slip groove through the coordinated cooperation of the clamping head and the lever. Then, the control component controls the locking member to lock the current position of the swivel seat, so that the current relative position of the swivel seat and the base remains stable, thereby ensuring that the PCB module can be reliably placed in the communication chassis and inserted into place. When the PCB module needs to be removed from the communication chassis, the control assembly first operates the locking member in the reverse direction to release the locking member from locking the swivel seat. Then, the swivel seat rotates under the driving action of the swivel reset member, thereby driving the lever to moderately flip and tilt to an inclined state, so that the anti-slip groove returns to a moderately inclined state with respect to the vertical direction. At this time, the PCB module can be gradually extracted from the communication chassis by holding the power assist portion and pulling. During this process, the communication chassis panel is extracted from the anti-slip groove. The auxiliary extraction device uses the lever and the control assembly as the main operating components to control the swivel seat and its matching anti-slip groove and locking member to achieve reliable locking and limiting between the PCB module and the main structure of the communication chassis, which not only significantly improves the assembly stability of the PCB module in the communication chassis, but also makes the insertion and removal of the PCB module in the communication chassis simple and easy, and the corresponding plugging and unplugging operation is more efficient, and the labor intensity of the staff during the PCB module plugging and unplugging operation is correspondingly reduced, making the related operations of the PCB module and the communication chassis more convenient and efficient.

[0019] In another preferred embodiment of the present invention, the locking member is a locking pin that can reciprocate along the extension direction of the rotation axis of the swivel seat, the control assembly includes a control block that is linked to the locking pin, and the lever has a locking hole for the locking pin to be inserted into position to lock the lever. After the PCB module is installed in the communication chassis and inserted into place, the control block drives the locking pin to extend axially toward the side where the swivel seat is located until the locking pin is inserted into the locking hole. The locking hole and the locking pin are aligned and fitted to form a radial engagement limit for the locking pin, and thereby form a circumferential limit for the swivel seat to prevent the swivel seat from continuing to rotate, thereby ensuring that the positions of the clamping head and the lever are constant, thereby ensuring that the anti-slip groove engages and locks the communication chassis panel and that the lever assist portion is pressed and retracted with the outer end surface of the PCB module. When the PCB module needs to be removed from the communication chassis, the control block is first used to drive the locking pin to be pulled out of the locking hole axially and gradually away from the swivel seat until the locking pin is recovered and reset. At this time, the swivel seat releases the circumferential locking state and restores the ability to rotate freely, so that the swivel seat can rotate moderately under the drive of the rotary reset member to drive the clamping head and the lever to reset, and the anti-slip groove to reset accordingly, so that the staff can hold the power-assisting part of the lever to smoothly and efficiently pull the PCB module out of the communication chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural axonometric diagram of a pull-out aid provided by a specific embodiment of the present invention;

[0022] Figure 2 for Figure 1 Axonometric drawing from another perspective;

[0023] Figure 3 for Figure 1 Structural axonometric drawing of the middle base;

[0024] Figure 4 for Figure 1 Structural axonometric drawing of the middle swivel seat;

[0025] Figure 5 for Figure 1 Structural axonometric drawing of the central control component;

[0026] Figure 6 for Figure 5 Front view of

[0027] Figure 7 for Figure 6 Cross-sectional view along AA direction;

[0028] Figure 8 This is a schematic diagram of the matching structure of the extraction aid, PCB module and communication chassis provided in a specific embodiment of the present invention.

[0029] in:

[0030] 10-Ejector;

[0031] 11-base; 111-waist-shaped hole;

[0032] 12-swivel seat; 121-clip head; 1211-anti-slip hook; 122-shift lever; 1221-assisting part; 1222-limiting part; 1223-locking hole; 1224-locking groove; 123-anti-slip groove;

[0033] 13-locking pin; 131-control block; 132-compression spring; 133-anti-slip touch plate; 1331-anti-slip groove; 1332-stressed inclined surface; 1333-small boss; 134-bayonet; 135-locking convex tooth;

[0034] 14-torsion spring; 141-rotation casing; 142-reference casing; 143-rotation limit column;

[0035] 20-communication chassis; 21-panel;

[0036] 30-PCB module; 31-external end surface. DETAILED DESCRIPTION

[0037] The core of the present invention is to provide an extraction aid, which can effectively improve the efficiency of plugging and unplugging operations of PCB modules in a communication chassis, making the plugging and unplugging operations simpler and easier, and reducing the labor intensity of staff.

[0038] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0039] It should be noted in advance that, in the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In addition, in the present invention, unless otherwise clearly stipulated and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them.

[0041] In addition, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is horizontally higher than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is horizontally lower than the second feature. The terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0042] Please refer to Figures 1 to 8 .

[0043] In a specific embodiment, the pull-out aid provided by the present invention includes a base 11 fixed at the edge of the outer end surface 31 of the PCB module 30, and a rotating seat 12 is rotatably provided on the outer side of the base 11, and a clamping head 121 and a driving rod 122 are linked to the rotating seat 12, and the free end of the clamping head 121 protrudes from the rotating seat 12, and one end of the driving rod 122 protrudes from the rotating seat 12 in the same direction as the free end of the clamping head 121 and is clearance-matched with the clamping head 121 to form an anti-slip groove 123 for the panel 21 of the communication chassis 20 to be embedded, and the other end of the driving rod 122 protrudes from the rotating seat 12 to form an assisting part 1221, and a rotating reset part that can drive the rotating seat 12 to rotate around a fixed axis is connected between the base 11 and the rotating seat 12; a locking part that can limit and lock the rotating seat 12 is also provided on the base 11, and a control component that cooperates with the locking part to control the disassembly and assembly of the locking part and the rotating seat 12.

[0044] Generally, both ends of the lever 122 protrude from the rotary seat 12 respectively, and the protruding sizes of the two ends of the lever 122 relative to the rotary seat 12 are different, wherein the end with the smaller protruding size is the limiting portion 1222, and the protruding direction of the limiting portion 1222 is in the same direction as the clamping head 121, so the limiting portion 1222 can cooperate with the clamping head 121 to form an anti-slip groove 123 by the alignment clearance; and the end of the lever 122 with the larger protruding size relative to the rotary seat 12 is the power-assisting portion 1221. The power-assisting portion 1221 and the limiting portion 1222 serve as the force arm parts at both ends, and can form a lever mechanism with the part located in the middle of the lever 122 linked to the rotary seat 12. The assisting portion 1221 is the side with the longer lever arm in the lever mechanism, so the operator can easily and effortlessly realize the rotation linkage control of the entire lever 122 by pressing the assisting portion 1221, and thereby realize the tilting control of the limiting portion 1222, so that it is synchronously linked with the clamping head 121 to adjust the inclination state of the anti-slip groove 123 to be consistent with the vertical direction, so that the panel 21 of the communication chassis 20 can be reliably embedded in the anti-slip groove 123, and the clamping head 121 and the limiting portion 1222 cooperate to form a limit lock on the front and rear sides of the panel 21 of the communication chassis 20, thereby preventing the PCB module 30 from falling out of the communication chassis 20.

[0045] After the operator controls the locking member through the control component to release the limit lock on the swivel seat 12, the swivel seat 12 is rotated and reset under the drive of the rotation reset member. At this time, the lever 122 and the clamping head 121 rotate and reset synchronously with the swivel seat 12, so that the free end of the assisting portion 1221 gradually moves away from the outer end surface 31 of the PCB module 30 and restores the tilted state, so that the assisting portion 1221 of the lever 122 in the tilted state can be used as a handle, which is convenient for the operator to pull the PCB module 30 in a linked manner by holding the assisting portion 1221, so as to pull the PCB module 30 out of the communication chassis 20.

[0046] During specific operation, the extraction aid 10 is aligned and fixed at the top edge and bottom edge of the outer end surface 31 of the PCB module 30. If the installation space is cramped, the extraction aid 10 can be placed at either the top edge or the bottom edge of the outer end surface 31 of the PCB module 30.

[0047] After the ejector 10 is installed in place, the clamp head 121 of the ejector 10 located at the top edge of the PCB module 30 should be facing upward, and the free end of the clamp head 121 of the ejector 10 located at the bottom edge of the PCB module 30 should be facing downward; the PCB module 30 equipped with the ejector 10 is pushed into the communication chassis 20, and the anti-slip groove 123 is kept moderately tilted with respect to the vertical direction until the panel 21 of the communication chassis 20 falls into the anti-slip groove 123 and abuts against the inner wall of the anti-slip groove 123. At this time, the staff can manually operate the button The assisting portion 1221 is pressed to rotate the swivel seat 12 appropriately until the anti-slip groove 123 is flipped to the vertical direction. In this way, the panel 21 of the communication chassis 20 can be reliably limited and clamped in the anti-slip groove 123 through the coordinated cooperation of the clamping head 121 and the lever 122. Thereafter, the current position of the swivel seat 12 is locked by operating the locking member through the control component, so that the current relative position of the swivel seat 12 and the base 11 remains stable, thereby ensuring that the PCB module 30 can be reliably placed in the communication chassis 20 and inserted into place. When the PCB module 30 needs to be taken out of the communication chassis 20, the locking member is first manipulated to move in the reverse direction through the control component to release the locking member from locking the swivel seat 12. Then, the swivel seat 12 rotates under the driving action of the swivel reset member, thereby driving the lever 122 to flip and tilt moderately to a tilted state, so that the anti-slip groove 123 can be restored to a state moderately tilted with respect to the vertical direction. At this time, the PCB module 30 can be gradually pulled out of the communication chassis 20 by holding the power-assisting part 1221 and pulling. During this process, the panel 21 of the communication chassis 20 is pulled out of the anti-slip groove 123.

[0048] The pull-out aid 10 uses the lever 122 and the control assembly as main operating components to control the swivel seat 12 and its matching anti-slip groove 123 and locking member to achieve reliable locking and limiting between the PCB module 30 and the main structure of the communication chassis 20. This not only significantly improves the assembly stability of the PCB module 30 in the communication chassis 20, but also makes the insertion and removal of the PCB module 30 in the communication chassis 20 simple and easy, and the corresponding insertion and removal operation is more efficient. The labor intensity of the staff during the insertion and removal of the PCB module 30 is correspondingly reduced, and the related operations and use of the PCB module 30 and the communication chassis 20 are more convenient and efficient.

[0049] In actual applications, considering the operational requirements of most working conditions, the main structural components of the puller 10 should be made of zinc alloy. The main structural components mentioned here include but are not limited to the base 11, rotary seat 12, clamping head 121 and lever 122 mentioned in this solution, and should also include other structural components with certain structural strength requirements and working condition tolerance needs.

[0050] Accordingly, a PC (polycarbonate) protective film can be coated on the main operating components of the extraction aid 10 and the adapter components that need to contact the PCB module 30. In this way, the flexibility, wear resistance, high resistance, and good electrical properties of the polycarbonate material are utilized to enhance the overall working condition tolerance and operational safety of the extraction aid 10, so that it can better meet the working conditions and application requirements of the PCB module 30 and the communication chassis 20.

[0051] Furthermore, the locking member is a locking pin 13 that can move back and forth along the extension direction of the rotation axis of the rotating seat 12. The control component includes a control block 131 that is linked to the locking pin 13. The lever 122 has a locking hole 1223 for the locking pin 13 to be inserted into to lock the lever 122. After the PCB module 30 is installed in the communication chassis 20 and inserted into place, the control block 131 drives the locking pin 13 to extend axially toward the side where the swivel seat 12 is located until the locking pin 13 is aligned and inserted into the locking hole 1223. The locking hole 1223 is aligned and plugged into the locking pin 13 to form a radial clamping limit for the locking pin 13, and thereby form a circumferential limit for the swivel seat 12 to prevent the swivel seat 12 from continuing to rotate, thereby ensuring that the positions of the clamping head 121 and the lever 122 are constant, thereby ensuring that the anti-slip groove 123 is clamped and locked to the panel 21 of the communication chassis 20, and the pressing and closing of the assisting part 1221 of the lever 122 and the outer end surface 31 of the PCB module 30. When it is necessary to remove the PCB module 30 from the communication chassis 20, the control block 131 is first used to drive the locking pin 13 to be axially withdrawn from the locking hole 1223 and gradually away from the swivel seat 12 until the locking pin 13 is recovered and reset. At this time, the swivel seat 12 releases the circumferential locking state and restores the ability to rotate freely, so that the swivel seat 12 can rotate moderately under the drive of the rotation reset member, so as to drive the clamping head 121 and the lever 122 to reset, and the anti-slip groove 123 to reset accordingly, so that the staff can smoothly and efficiently withdraw the PCB module 30 from the communication chassis 20 by holding the power-assisting part 1221 of the lever 122.

[0052] In actual applications, a claw or buckle capable of opening and closing can also be used instead of the above-mentioned lock pin 13 as the specific application component of the locking member. The staff can flexibly select and adjust the specific structural type of the locking member according to the actual assembly space, component adaptation effect and other working conditions. In principle, any type of structure that can meet the actual application requirements of the extraction aid 10 is acceptable.

[0053] Furthermore, the middle portion of the base 11 has a waist-shaped hole 111, and the control block 131 is located in the waist-shaped hole 111 and can reciprocate along the long axis of the waist-shaped hole 111. The long axis of the waist-shaped hole 111 is parallel to the rotation axis of the swivel seat 12, and the assembly end of the lock pin 13 passes through the side of the base 11 along the long axis of the waist-shaped hole 111 and extends into the waist-shaped hole 111. The waist-shaped hole 111 has a large longitudinal depth in the long axis direction, which enables the control block 131 assembled in the waist-shaped hole 111 to reciprocate along the long axis of the waist-shaped hole 111, thereby driving the pin shaft to extend or retract synchronously, thereby achieving the alignment, locking, and unlocking of the pin shaft and the swivel seat 12.

[0054] It is easy to understand that in actual application, the two inner walls of the waist-shaped hole 111, which are arranged opposite to each other in the short axis direction, should be kept in contact with the control block 131. In this way, these two inner walls form a suitable limit for the control block 131, thereby preventing the control block 131 from shaking or loosening along the short axis direction of the waist-shaped hole 111. Of course, considering the difficulty of the assembly process and the adaptability of the components in actual application, a certain fit clearance can also be provided between the inner wall of the waist-shaped hole 111 and the control block 131 along the short axis direction of the waist-shaped hole 111. However, it should be avoided that the fit clearance is too large, so as to prevent the control block 131 from falling out of the waist-shaped hole 111.

[0055] Specifically, a compression spring 132 is embedded between the assembly end of the lock pin 13 and the inner wall of the waist-shaped hole 111, and the compression spring 132 is coaxially adapted to the lock pin 13. When the lock pin 13 is operated to retract to release the clamping lock on the swivel seat 12, the compression spring 132 is synchronously compressed as the lock pin 13 axially retracts, thereby alleviating the structural impact of the lock pin 13 when it retracts, and avoiding rigid contact or structural impact between the end of the lock pin 13 and the base 11 and other components. When the swivel seat 12 needs to be structurally locked, the elastic stretching reset force of the compression spring 132 can be used to push the lock pin 13 to extend synchronously, thereby achieving smooth extension of the lock pin 13, reducing the labor intensity of the staff, and effectively ensuring the tracking and movement accuracy of the telescopic action of the lock pin 13, thereby improving operational efficiency.

[0056] Generally, a latch 134 can be protruded from the outer wall of the lock pin 13 to latch the compression spring 132 onto the latch 134, forming an axial linkage structure between the compression spring 132 and the lock pin 13, thereby ensuring the proper fit between the compression spring 132 and the lock pin 13. The latch 134 can be directly assembled onto the control block 131, thereby forming a reliable linkage between the control block 131, the lock pin 13, and the compression spring 132, further optimizing the assembly structure of the control assembly and making the overall assembly structure of the extraction aid 10 more compact and reasonable.

[0057] In order to make the assembly structure of the extraction aid 10 more compact and regular, the locking pin 13 can also be inserted into the control block 131, and the bayonet pin 134 can be correspondingly connected to the inner cavity of the control block 131, so that the main structure of the control block 131 can be used to form structural protection for the locking pin 13 and the bayonet pin 134.

[0058] A locking cam 135 can be protruded from the side of one end of the locking pin 13 that is adapted to the swivel seat 12, and a locking groove 1224 that can be aligned and adapted to the locking cam 135 is also arranged in the locking hole 1223. The aligned insertion adaptation of the locking cam 135 and the locking groove 1224 is utilized to further improve the alignment adaptation effect and the bonding strength between the pin shaft and the locking hole 1223, thereby further optimizing the limiting locking effect of the locking pin 13 on the swivel seat 12.

[0059] In addition, in actual applications, the compression spring 132 can be directly embedded between the locking pin 13 and the inner wall of the end of the waist-shaped hole 111 in the long axis direction, or it can be clamped between the control block 131 and the inner wall of the end of the waist-shaped hole 111 in the long axis direction. However, no matter which assembly structure is adopted, the reliable linkage adaptation of the control block 131 and the locking pin 13 should be guaranteed.

[0060] More specifically, an anti-slip touch plate 133 is provided on the outer wall of the control block 131 facing the opening of the waist-shaped hole 111. The anti-slip touch plate 133 protrudes from the opening of the waist-shaped hole 111. After the extraction aid 10 is assembled with the main structure of the PCB module 30, the major and minor axes of the waist-shaped hole 111 are parallel to the outer end surface 31 of the PCB module 30, while the opening of the waist-shaped hole 111 faces the outside of the PCB module 30, that is, toward the direction of the operator. Thus, the anti-slip touch plate 133 protruding from the opening of the waist-shaped hole 111 helps the operator more conveniently and accurately find the contact point of the control block 131 and perform the corresponding operation, so as to manipulate the control block 131 to move accordingly, thereby driving the locking pin 13 to extend or retract synchronously. Generally, a number of anti-slip grooves 1331 are arranged on the anti-slip touch plate 133 to increase the friction between the operator's hand and the anti-slip touch plate 133, so that the operator's manual control is smoother and the operating force transmission is more reliable; a small boss 1333 with a force-bearing inclined surface 1332 can also be correspondingly provided on the anti-slip touch plate 133, so that the operator's hand force is applied more on the force-bearing inclined surface 1332, so as to increase the lateral force of the control block 131, thereby making the reciprocating movement of the control block 131 along the long axis direction of the waist-shaped hole 111 smoother and more efficient, and making the operator's manual operation of the control block 131 more convenient and labor-saving.

[0061] The rotary reset element is a torsion spring 14, with its two ends engaging and interlocking with the rotary seat 12 and the base 11, respectively. Torsion spring 14 offers high torsional transmission efficiency and a simple and reliable structure, further streamlining the assembly of the puller 10 while ensuring efficient rotary reset of the rotary seat 12 and its associated components.

[0062] On this basis, a rotating sleeve 141 is provided on the rotating seat 12 on a side facing the base 11, and a reference sleeve 142 is provided on the base 11 on a side facing the rotating seat 12, which is coaxially aligned with the rotating sleeve 141. The torsion spring 14 is coaxially press-fitted between the reference sleeve 142 and the rotating sleeve 141. The rotating sleeve 141 and the reference sleeve 142 are aligned and adapted to each other, thereby providing appropriate structural protection for the two ends of the torsion spring 14, which can not only prevent the ends of the torsion spring 14 from interference and damage from the external environment, but also ensure the tracking performance and assembly strength of the ends of the torsion spring 14 during the twisting operation, prevent the ends of the torsion spring 14 from loosening or misalignment, and thus ensure the overall assembly reliability and structural stability of the torsion spring 14.

[0063] Generally, the two ends of the torsion spring 14 can be respectively clamped at the bending parts of the main structure of the rotating seat 12 and the bending parts of the main structure of the base 11. In actual applications, bending structures specifically adapted to the torsion spring 14 can be arranged on the rotating seat 12 and the base 11 respectively, or the bending parts or groove structures on the existing structures such as the connection between the outer wall of the rotating casing 141 and the main structure of the rotating seat 12, and the connection between the reference casing 142 and the main structure of the base 11 can be used as the positioning support part and force-bearing part of the end of the torsion spring 14.

[0064] Specifically, a rotation limiting post 143 may be coaxially protruded from the middle of the rotation casing 141, and the torsion spring 14 may be coaxially sleeved on the rotation limiting post 143. The rotation limiting post 143 can provide certain structural support for the torsion spring 14, further ensuring the tracking performance and movement accuracy of the rotation movement of the torsion spring 14, and preventing the torsion spring 14 from loosening or misalignment.

[0065] Furthermore, the free end of the clamp head 121 has an anti-slip hook 1211 that bends toward the side where the anti-slip groove 123 is located. The anti-slip hook 1211 further enhances the strength of the clamp head 121 and the panel 21 of the communication chassis 20, thereby further optimizing the adaptability of the clamp head 121 to the panel 21 of the communication chassis 20, thereby optimizing the assembly of the PCB module 30 with the communication chassis 20.

[0066] In combination with the specific operation process in actual application, the PCB module 30 equipped with the pull-out aid 10 in this solution is sent to the corresponding position of the communication chassis 20. At this time, under the elastic torsional force of the torsion spring 14, the assisting portion 1221 of the lever 122 is in an outward-tilted state, and accordingly, the notch of the anti-slip groove 123 is also in a state of tilting toward the inside of the communication chassis 20. The PCB module 30 is continuously pushed into the communication chassis 20 until the panel 21 of the communication chassis 20 is stuck in the notch of the anti-slip groove 123 and abuts against the limiting portion 1222 of the lever 122. At this time, the operator presses the assisting portion 1221 of the lever 122 , overcoming the elastic torsional force of the torsion spring 14 to make the assist portion 1221 flip toward the internal space of the communication chassis 20, thereby driving the swivel seat 12 to rotate, so that the clamping head 121 and the anti-slip groove 123 flip synchronously until the panel 21 of the communication chassis 20 is smoothly stuck in the anti-slip groove 123. At this time, the lock pin 13 extends toward the swivel seat 12 under the elastic restoring force of the compression spring 132 until the lock pin 13 is inserted into the locking hole 1223 and snapped into place. Due to the continuous application of force by the compression spring 132, the lock pin 13 remains in the inserted state with the locking hole 1223, thereby achieving permanent locking of the swivel seat 12.

[0067] When it is necessary to take the PCB module 30 out of the communication chassis 20, the operator first swings the control block 131 laterally to move the control block 131 away from the swivel seat 12 along the axial direction of the lock pin 13, thereby driving the lock pin 13 to move axially synchronously until the lock pin 13 is pulled out of the locking hole 1223. At this time, the locking state of the swivel seat 12 is released, and the swivel seat 12 rotates and resets under the elastic torsional reset force of the torsion spring 14, thereby driving the clamping head 121 and the lever 122 to flip, so that the power assist portion 1221 of the lever 122 returns to the outward tilted state, and the anti-dropping The notch of the slot 123 returns to its tilted state toward the inside of the communication chassis 20. At this time, the operator can hold the assisting portion 1221 as a force-applying portion and apply an outward pulling force to the assisting portion 1221 so as to pull the PCB module 30 out of the communication chassis 20 as a whole through the puller 10. During this period, the panel 21 of the communication chassis 20 also falls out of the anti-slip slot 123. The operator holds the assisting portion 1221 and continues to pull outward until the PCB module 30 is pulled out of the communication chassis 20 as a whole, thereby completing the removal operation of the PCB module 30.

[0068] In summary, the pull-out aid provided in the present invention is used by aligning and fixing the pull-out aid at the top edge and / or bottom edge of the outer end surface of the PCB module, and making the clamping head of the pull-out aid located at the top edge of the PCB module face upward, and making the free end of the clamping head of the pull-out aid located at the bottom edge of the PCB module face downward; the PCB module equipped with the pull-out aid is pushed into the communication chassis, and the anti-slip groove is kept moderately tilted with respect to the vertical direction until the panel of the communication chassis falls into the anti-slip groove and abuts against the inner wall of the anti-slip groove. At this time, the staff can manually press the assisting part to rotate the swivel seat moderately until the anti-slip groove flips to the vertical direction. In this way, the communication chassis panel can be reliably limited and clamped in the anti-slip groove through the coordinated cooperation of the clamping head and the lever. Then, the control component controls the locking member to lock the current position of the swivel seat, so that the current relative position of the swivel seat and the base remains stable, thereby ensuring that the PCB module can be reliably placed in the communication chassis and inserted into place. When the PCB module needs to be removed from the communication chassis, the control assembly first operates the locking member in the reverse direction to release the locking member from locking the swivel seat. Then, the swivel seat rotates under the driving action of the swivel reset member, thereby driving the lever to moderately flip and tilt to an inclined state, so that the anti-slip groove returns to a moderately inclined state with respect to the vertical direction. At this time, the PCB module can be gradually extracted from the communication chassis by holding the power assist portion and pulling. During this process, the communication chassis panel is extracted from the anti-slip groove. The auxiliary extraction device uses the lever and the control assembly as the main operating components to control the swivel seat and its matching anti-slip groove and locking member to achieve reliable locking and limiting between the PCB module and the main structure of the communication chassis, which not only significantly improves the assembly stability of the PCB module in the communication chassis, but also makes the insertion and removal of the PCB module in the communication chassis simple and easy, and the corresponding plugging and unplugging operation is more efficient, and the labor intensity of the staff during the PCB module plugging and unplugging operation is correspondingly reduced, making the related operations of the PCB module and the communication chassis more convenient and efficient.

[0069] The above describes in detail the extraction aid provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A pulling aid, characterized in that: The invention comprises a base fixed at the edge of the outer end surface of the PCB module, a swivel seat is rotatably provided on the outer side of the base, a clamping head and a lever are linked to the swivel seat, the free end of the clamping head protrudes from the swivel seat, one end of the lever protrudes from the swivel seat in the same direction as the free end of the clamping head and is gap-matched with the clamping head to form an anti-slip groove for embedding the communication chassis panel, the other end of the lever protrudes from the swivel seat to form a power-assisting portion, and a swivel reset member that can drive the swivel seat to rotate about a fixed axis is connected between the base and the swivel seat; The base is also provided with a locking member capable of locking the swivel seat in a limited position, and a control component that cooperates with the locking member to control the disassembly and assembly of the locking member and the swivel seat.

2. The extraction aid according to claim 1, characterized in that: The locking member is a locking pin that can reciprocate along the extension direction of the rotation axis of the swivel seat. The control component includes a control block that is linked to the locking pin. The shift rod has a locking hole for the locking pin to be inserted into the position to lock the shift rod.

3. The extraction aid according to claim 2, characterized in that: The base has a waist-shaped hole in the middle, the control block is located in the waist-shaped hole and can move back and forth along the long axis direction of the waist-shaped hole, the long axis of the waist-shaped hole is parallel to the rotation axis of the rotary seat, and the assembly end of the locking pin passes through the side of the base along the long axis direction of the waist-shaped hole and extends into the waist-shaped hole.

4. The extraction aid according to claim 3, characterized in that: A compression spring is embedded between the assembly end of the lock pin and the inner wall of the waist-shaped hole, and the compression spring is coaxially adapted to the lock pin.

5. The extraction aid according to claim 4, characterized in that: An anti-skid touch plate is linked to an outer wall of the control block on one side facing the opening of the waist-shaped hole, and the anti-skid touch plate protrudes from the opening of the waist-shaped hole.

6. The extraction aid according to claim 2, characterized in that: The rotary reset component is a torsion spring, and two ends of the torsion spring are respectively connected and adapted to the rotary seat and the base.

7. The extraction aid according to claim 6, characterized in that: A rotating casing is protruded from the rotating seat on one side facing the base, a reference casing is protruded from the base on one side facing the rotating seat and is coaxially aligned with the rotating casing, and the torsion spring is coaxially pressed between the reference casing and the rotating casing.

8. The extraction aid according to claim 7, characterized in that: A rotation limiting column is coaxially protruded from the middle of the rotation casing, and the torsion spring is coaxially sleeved on the rotation limiting column.

9. The extraction aid according to claim 1, wherein: The free end of the clamp head is provided with an anti-slip hook bent toward the side where the anti-slip groove is located.

10. The extraction aid according to claim 1, wherein: The base, the rotary seat, the clamping head and the shifting rod are all made of zinc alloy.

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