A wedge-shaped locking device with positive and negative thread transmission locking method

Abstract

The present invention discloses a wedge locker with a positive and negative thread transmission locking method, comprising a main trunk slot body, an anti-slip block, a screw, a fixed wedge block and a moving wedge block group; the fixed wedge block is fixedly connected to one end of the main trunk slot body in the length direction, the moving wedge block group is connected in the length direction of the main trunk slot body, and one end of the moving wedge block group cooperates with the fixed wedge block; the anti-slip block is fixedly connected to the other end of the main trunk slot body in the length direction, and the screw is threadedly connected to the anti-slip block and the moving wedge block group at the same time; the screw includes two sections of thread, one section of the thread is a right-handed positive thread, and the other section is a left-handed reverse thread, and the moving wedge block group and the anti-slip block are provided with a right-handed positive thread or a left-handed reverse thread corresponding to the position of the screw. The two-stage anti-slip design of the present invention completely eliminates the safety hazards caused by the scattering of parts due to the screw slipping out; the stop design and the reduction of the number of rotations make the operation more direct; the breakthrough in the rising height also greatly improves the application range of the wedge locker.

Description

Technical Field

[0001] The invention belongs to the technical field of wedge-shaped lockers, and in particular relates to a wedge-shaped locker with a positive and negative wire transmission locking mode. Background Art

[0002] As the application scope of electronic equipment, especially military electronic equipment, becomes wider and wider, the environment in which it is located becomes more and more complex and harsh. In order to improve combat effectiveness, military electronic equipment has been developing towards modularization, miniaturization, and high integration, which has brought a series of problems such as high heat flux density, difficult heat dissipation, and inconvenient maintenance. Wedge lockers play a vital role as products for reliable locking and effective heat conduction of modules in equipment. They lay a solid foundation for modularization, miniaturization, and high integration of equipment, and have become one of the indispensable important parts. However, there are still many shortcomings and problems in the wedge lockers on the market, which cannot effectively meet the development trend of military equipment. Not only do they greatly limit the reliability and maintainability of the equipment, but they often require huge energy and costs to solve these problems, which seriously affects the combat effectiveness of the equipment.

[0003] When the positive thread locking is disassembled after the module is locked, there is often a problem that the wedge block is stuck and cannot be retracted. Some wedge lockers with spring rebound cannot fundamentally solve this problem due to their weak force.

[0004] The primary thread structure currently used in the market cannot completely prevent the screw from falling out when the wedge-shaped locker is loosened and retracted. Once it falls out, the locking may fail at best, and parts may scatter inside the equipment and cause a short circuit at worst, which may damage the equipment or endanger personal safety, posing a huge safety risk.

[0005] Due to the small size of the wedge locker, it generally uses M3 and below positive thread, and its pitch is small. In order to achieve the required swelling height, it needs to be rotated a lot of times, which limits the range of swelling height, adapts to the equipment requirements in a narrow range, and the user experience is not good. Summary of the invention

[0006] In order to solve the above problems existing in the prior art, the present invention aims to provide a wedge-shaped locker with a positive and negative wire transmission locking method.

[0007] The technical solution adopted by the present invention is:

[0008] A wedge-shaped locker with a positive and negative thread transmission locking method, comprising a main trunk slot body, an anti-dropping block, a screw, a fixed wedge block and a movable wedge block group;

[0009] The fixed wedge block is fixedly connected to one end of the main trunk tank body in the length direction, the moving wedge block group is connected in the length direction of the main trunk tank body, and one end of the moving wedge block group cooperates with the fixed wedge block;

[0010] The movable wedge block group includes a movable wedge block and a sliding wedge block that cooperate with each other. There are more than one movable wedge block and sliding wedge block and they are connected in sequence in the length direction of the main trunk slot body. At least one sliding wedge block is connected to the other end in the length direction of the main trunk slot body and slides along the length direction of the main trunk slot body. The movable wedge block slides along the length direction of the main trunk slot body and moves along the height direction of the main trunk slot body. The anti-slip block is fixedly connected to the other end of the length direction of the main trunk slot body. The screw is threadedly connected to the anti-slip block and the sliding wedge block arranged at the other end in the length direction of the main trunk slot body at the same time.

[0011] The screw comprises two sections of threads, one section of which is a right-handed normal thread and the other section is a left-handed reverse thread. Accordingly, the sliding wedge block and the anti-slip block are provided with a right-handed normal thread or a left-handed reverse thread corresponding to the position of the screw.

[0012] On the basis of the above technical solution, the fixed wedge block is fixedly connected to the main slot body through a cotter pin, and accordingly, both the fixed wedge block and the main slot body are provided with pin holes.

[0013] When there are more than two moving wedge blocks and sliding wedge blocks, the moving wedge blocks and the sliding wedge blocks are alternately connected in sequence in the length direction of the main trunk slot body, and the top surface of the moving wedge block is larger than the bottom surface and the top surface faces outside the main trunk slot body.

[0014] On the basis of the above technical solution, the main trunk tank body is a U-shaped tank body, and first limit devices are provided at the notches of the tank walls on both sides of the length direction of the main trunk tank body;

[0015] The lower ends of the outer walls on both sides of the sliding wedge block in the length direction are provided with second limiting devices, the lower end of the sliding wedge block is connected to the main trunk slot body, the first limiting device of the main trunk slot body contacts the second limiting device of the sliding wedge block and limits the sliding wedge block from jumping relative to the main trunk slot body;

[0016] The lower ends of the outer walls on both sides of the moving wedge block in the length direction are provided with third limiting devices, the lower end of the moving wedge block is connected to the main trunk groove body, the first limiting device of the main trunk groove body contacts the third limiting device of the moving wedge block so that the lower end of the moving wedge block is limited in the main trunk groove body.

[0017] On the basis of the above technical solution, the first limiting device is provided at the inner edge of the slot openings of the slot walls on both sides in the length direction of the main slot body;

[0018] The second limiting device is a second lower outer edge provided at the lower end of the outer walls on both sides in the length direction of the sliding wedge block, and the inner edge of the main trunk slot body contacts the second lower outer edge of the sliding wedge block and limits the sliding wedge block from jumping relative to the main trunk slot body;

[0019] The third limiting device is a third lower outer edge arranged at the lower ends of the outer walls on both sides in the length direction of the moving wedge block. The inner edge of the main trunk groove body contacts the third lower outer edge of the moving wedge block so that the lower end of the moving wedge block is limited in the main trunk groove body.

[0020] On the basis of the above technical solution, the upper ends of the outer walls on both sides in the length direction of the sliding wedge block are further provided with a second upper outer edge;

[0021] The upper ends of the outer walls on both sides in the length direction of the movable wedge block are also provided with a third upper outer edge.

[0022] On the basis of the above technical solution, a fourth limiting device is provided at the lower end of the outer walls on both sides in the length direction of the fixed wedge block, the lower end of the fixed wedge block is fixedly connected to the main trunk slot body, the first limiting device of the main trunk slot body contacts the fourth limiting device of the fixed wedge block and limits the fixed wedge block from jumping relative to the main trunk slot body.

[0023] Based on the above technical solution, the fourth limiting device is a fourth lower outer edge arranged at the lower ends of the outer walls on both sides in the length direction of the fixed wedge block, the inner edge of the main groove body contacts the fourth lower outer edge of the fixed wedge block and limits the movement of the fixed wedge block relative to the main groove body, and a fourth upper outer edge is also arranged at the upper ends of the outer walls on both sides in the length direction of the fixed wedge block.

[0024] On the basis of the above technical solution, a relatively sealed cavity is formed between the bottom surface of the moving wedge block and the main slot body, and a heat-conducting filling layer is filled in the cavity.

[0025] On the basis of the above technical solution, the third lower outer edge of the movable wedge block is in contact with the inner wall of the main slot body / and the inner edge of the main slot body is in contact with the outer wall of the movable wedge block.

[0026] On the basis of the above technical solution, the bottom surface of the main tank body and the top surface of the moving wedge block are both provided with flexible heat-conducting pads.

[0027] On the basis of the above technical solution, the screws are M3 or above.

[0028] The beneficial effects of the present invention are:

[0029] 1. The innovative positive and negative wire design of the present invention enables the sliding wedge block and the screw to rotate to form a back-and-forth connection relationship, which completely solves the problem of possible jamming after the wedge lockers currently on the market are locked, and solves the problem that the equipment may be unable or difficult to remove and replace the module during maintenance and replacement. From a practical point of view, the maintainability of the equipment is improved, and the average fault repair time of the equipment is effectively reduced; the two-stage anti-slip design completely eliminates the safety hazards caused by the scattering of parts due to the screw slipping out, ensures personal safety, and improves economic benefits; the stop design and the reduction in the number of rotations make the operation more direct, greatly improving the user experience; the breakthrough in the rising height also greatly increases the application range of the wedge locker, and provides more choices and possibilities for the size space of module locking.

[0030] 2. Under the premise of ensuring the conventional capabilities of the wedge-shaped locker, the present invention takes into account the anti-slip and anti-rotation functions of the wedge block and the insertion and locking requirements of various boards and cards of various sizes. At the same time, the structural strength of the wedge-shaped locker itself is greatly improved, the locking breaking torque is increased by 2 times, and the locking force that can be provided is also doubled; the thermal conductivity is greatly improved, and the temperature difference from the top surface of the wedge-shaped locker to the bottom surface of the main slot body is reduced to about 5°C.

[0031] 3. The present invention can significantly reduce the internal thermal resistance of the wedge-shaped locker through the structural design of the wedge-shaped locker and the injection of the thermal conductive filling layer under relatively low production cost, production control and assembly requirements, making the wedge-shaped locker itself a locking thermal conductive product with excellent performance; the structural design of the wedge-shaped locker can also well seal the thermal conductive filling layer in the wedge-shaped locker, which is not easy to cause overflow pollution, and does not reduce its operational practicality while reducing the internal thermal resistance; the present invention arranges a flexible thermal conductive pad on the bottom surface of the main tank body and the top surface of the moving wedge block, which not only concentrates the control of the original three components (products) on one product of the wedge-shaped locker, but also improves the performance of the wedge-shaped locker from the perspective of engineering application. The convenience of operation is greatly improved, the control cost is reduced, and the original precise control of the roughness of each surface is converted into conventional processing, which greatly improves the yield rate and greatly reduces the production cost. The present invention can not only reduce the internal thermal resistance of the wedge locker by several times, but can even reduce the thermal resistance of the heat dissipation system (module level, equipment level) by several times. In the existing methods, such a reduction often requires considerable effort and cost investment. The present invention simplifies and focuses on the replacement of the wedge locker itself, and the reduction in manpower, material resources and financial resources is immeasurable. In addition, since the wedge locker is being widely used under the trend of modularization, it is highly popularizable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0033] Figure 2It is a schematic diagram of the explosion structure of an embodiment of the present invention.

[0034] Figure 3 It is a schematic diagram of the partial cross-sectional structure of an embodiment of the present invention.

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of the main tank body and the sliding wedge block in the embodiment of the present invention.

[0036] Figure 5 It is a schematic diagram of the cross-sectional structure of the main tank body and the moving wedge block in the embodiment of the present invention.

[0037] Figure 6 It is a schematic diagram of the cross-sectional structure of the main tank body and the fixed wedge block in the embodiment of the present invention.

[0038] Figure 7 It is a structural schematic diagram of the main tank body of an embodiment of the present invention.

[0039] Figure 8 It is a schematic diagram of the installation position of the thermal conductive material in an embodiment of the present invention.

[0040] In the figure: 1-main tank body; 101-inner edge; 102-inner countersunk hole; 103-inner threaded hole; 2-anti-slip block; 3-screw; 4-fixed wedge block; 401-fourth lower outer edge; 402-fourth upper outer edge; 5-movable wedge block; 501-third lower outer edge; 502-third upper outer edge; 6-sliding wedge block; 601-second lower outer edge; 602-second upper outer edge; 7-split pin; 8-washer; 9-thermal conductive filling layer; 10-flexible thermal conductive pad; 11-module; 12-box. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] Example:

[0043] like Figure 1-8 As shown, a wedge-shaped locker of a positive and negative wire transmission locking method in this embodiment includes a main slot body 1, an anti-dropping block 2, a screw 3, a fixed wedge block 4 and a movable wedge block group;

[0044] The fixed wedge block 4 is fixedly connected to one end of the main trunk tank body 1 in the length direction through a split pin 7, and the movable wedge block group is connected in the length direction of the main trunk tank body 1, and one end of the movable wedge block group cooperates with the fixed wedge block 4;

[0045] The moving wedge block group includes a moving wedge block 5 and a sliding wedge block 6 that cooperate with each other. There are more than one moving wedge block 5 and sliding wedge block 6 and they are connected in sequence in the length direction of the main trunk slot body 1. At least one sliding wedge block 6 is connected to the other end of the main trunk slot body 1 in the length direction and slides along the length direction of the main trunk slot body 1. The moving wedge block 5 slides along the length direction of the main trunk slot body 1 and moves along the height direction of the main trunk slot body 1. The anti-slip block 2 is fixedly connected to the other end of the main trunk slot body 1 in the length direction. The sliding wedge block 6 and the anti-slip block 2 at the other end of the main trunk slot body 1 in the length direction are both provided with internal threads. The screw 3 passes through the anti-slip block 2 and is threadedly connected to the sliding wedge block 6 and the anti-slip block 2 at the other end of the main trunk slot body 1 in the length direction.

[0046] When there are more than two moving wedge blocks 5 and sliding wedge blocks 6, the moving wedge blocks 5 and sliding wedge blocks 6 are alternately connected in sequence in the length direction of the main trunk slot body 1, and the top surface of the moving wedge block 5 is larger than the bottom surface and the top surface faces outside the main trunk slot body 1.

[0047] The following examples illustrate the structures of two wedge locks:

[0048] The first type: the number of the moving wedge block 5 and the sliding wedge block 6 are both one, one end of the moving wedge block 5 cooperates with the fixed wedge block 4 and the other end cooperates with one end of the sliding wedge block 6, and the other end of the sliding wedge block 6 is used for threaded connection with the screw 3.

[0049] The second type: there are two movable wedge blocks 5 and two sliding wedge blocks 6. One end of the first movable wedge block 5 cooperates with the fixed wedge block 4 and the other end cooperates with one end of the first sliding wedge block 6. The other end of the first sliding wedge block 6 cooperates with one end of the second movable wedge block 5. The other end of the second movable wedge block 5 cooperates with one end of the second sliding wedge block 6. The other end of the second sliding wedge block 6 is used for threaded connection with the screw 3.

[0050] The working process is as follows:

[0051] After any of the above wedge-shaped lockers are assembled, the screw 3 is rotated clockwise, the screw 3 and the sliding wedge block 6 move toward the fixed wedge block 4, and the moving wedge block 5 gradually rises to achieve the expansion locking function;

[0052] The screw 3 is rotated counterclockwise, the screw 3 and the sliding wedge block 6 move away from the fixed wedge block 4, and the moving wedge block 5 gradually descends, thereby realizing the loosening function.

[0053] In this embodiment, the cotter pin 7 is an elastic cotter pin, and accordingly, both the fixed wedge block 4 and the main slot body 1 are provided with pin holes.

[0054] In this embodiment, the screw 3 is a hexagon socket head screw to assist the rotation operation.

[0055] In this embodiment, the screw 3 is also covered with a washer 8 .

[0056] The screw 3 of the present invention adopts a two-stage positive and negative thread structure. The screw 3 includes two sections of thread, one section of the thread is a right-hand positive thread, and the other section is a left-hand negative thread. Accordingly, the sliding wedge block 6 and the anti-slip block 2 are provided with a right-hand positive thread or a left-hand negative thread corresponding to the position of the screw 3.

[0057] The screw 3 adopts a two-stage positive and negative thread structure, which has the following effects:

[0058] 1. When the sliding wedge block 6 retreats to contact the anti-slip block 2, it can no longer be rotated back by the screw 3 and is completely stopped, ensuring that the wedge locker is completely anti-slip once assembled, eliminating all safety hazards caused by slip-out failure.

[0059] 2. The sliding wedge block 6 can be pushed by rotating the screw 3 to achieve lateral movement, which reliably and effectively achieves the locking and anti-jamming functions.

[0060] 3. When the screw 3 is rotated one circle, the positive and negative threads can be rotated one circle at the same time, that is, under the condition that the pushing stroke remains unchanged, the height that originally required two rotations to rise is achieved, which greatly increases the rising height under the same length, and theoretically can reach more than twice. This increase in height not only broadens the size application range of the wedge-shaped locker, broadens the size matching and selection of users, but also improves the reliability of the wedge-shaped locker.

[0061] 4. It can effectively control the stop position during expansion and release, and can be adjusted quickly and effectively according to user requirements. The reduction in the number of rotations further improves the user experience.

[0062] In summary, the present invention can achieve the following beneficial effects:

[0063] The innovative positive and negative wire design of the present invention enables the sliding wedge block and the screw to rotate to form a back-and-forth connection relationship, completely solving the problem of possible jamming after the wedge lockers currently on the market are locked, and solving the problem that the equipment may be unable or difficult to remove and replace modules during maintenance and replacement. From a practical point of view, the maintainability of the equipment is improved, and the average fault repair time of the equipment is effectively reduced; the two-stage anti-slip design completely eliminates the safety hazards caused by the scattering of parts due to the screw slipping out, ensures personal safety, and improves economic benefits; the stop design and the reduction in the number of rotations make the operation more direct, greatly improving the user experience; the breakthrough in the rising height also greatly increases the application range of the wedge locker, and provides more choices and possibilities for the size space of module locking.

[0064] The main tank body 1 of the present invention is a U-shaped tank body, and first limiting devices are provided at the notches of the tank walls on both sides in the length direction of the main tank body 1.

[0065] A second limiting device is provided at the lower end of the outer walls on both sides in the length direction of the sliding wedge block 6. The lower end of the sliding wedge block 6 is connected to the main trunk slot body 1. The first limiting device of the main trunk slot body 1 contacts the second limiting device of the sliding wedge block 6 and limits the sliding wedge block 6 from jumping relative to the main trunk slot body 1.

[0066] A third limiting device is provided at the lower end of the outer walls on both sides in the length direction of the movable wedge block 5, and the lower end of the movable wedge block 5 is connected to the main trunk slot body 1. The first limiting device of the main trunk slot body 1 contacts the third limiting device of the movable wedge block 5 so that the lower end of the movable wedge block 5 is limited in the main trunk slot body 1.

[0067] The first limiting device is an inner edge 101 of the slot wall notch provided on both sides in the length direction of the main slot body 1. The second limiting device is a second lower outer edge 601 provided on the lower ends of the outer walls on both sides in the length direction of the sliding wedge block 6. The inner edge of the main slot body 1 contacts the second lower outer edge 601 of the sliding wedge block 6 and limits the sliding wedge block 6 from jumping relative to the main slot body 1. The upper ends of the outer walls on both sides in the length direction of the sliding wedge block 6 are also provided with a second upper outer edge 602.

[0068] The third limiting device is a third lower outer edge 501 arranged at the lower ends of the outer walls on both sides in the length direction of the moving wedge block 5. The inner edge of the main trunk slot body 1 contacts the third lower outer edge 501 of the moving wedge block 5 so that the lower end of the moving wedge block 5 is limited in the main trunk slot body 1. The upper ends of the outer walls on both sides in the length direction of the moving wedge block 5 are also provided with a third upper outer edge 502.

[0069] In order to facilitate the fixed connection of the fixed wedge block 4, a fourth limiting device is provided at the lower end of the outer walls on both sides in the length direction of the fixed wedge block 4, and the lower end of the fixed wedge block 4 is fixedly connected to the main trunk slot body 1. The first limiting device of the main trunk slot body 1 contacts the fourth limiting device of the fixed wedge block 4 and limits the fixed wedge block 4 from jumping relative to the main trunk slot body 1.

[0070] The fourth limiting device is a fourth lower outer edge 401 arranged at the lower ends of the outer walls on both sides in the length direction of the fixed wedge block 4. The inner edge of the main trunk slot body 1 contacts the fourth lower outer edge 401 of the fixed wedge block 4 and limits the fixed wedge block 4 from jumping relative to the main trunk slot body 1. A fourth upper outer edge 402 is also arranged at the upper ends of the outer walls on both sides in the length direction of the fixed wedge block 4.

[0071] In this embodiment, the main tank body 1 is made of aluminum alloy.

[0072] In this embodiment, the thickness of the main slot body 1 is 5-6 mm, and the thickness of the slot bottom of the main slot body 1 is 2-3 mm.

[0073] In this embodiment, the bottom of the main tank body 1 is provided with an inner countersunk hole 102 and an inner threaded hole 103 .

[0074] The present invention can achieve the following beneficial effects through the connection and matching relationship between the main tank body 1 and the fixed wedge block 4, the movable wedge block 5 and the sliding wedge block 6:

[0075] 1. The main trunk trough body and the moving wedge block and the sliding wedge block adopt the innovative design of the concave-convex male and female card slot bite slideway structure, which occupies a very small space to achieve the guidance and positioning of the main trunk trough body and the moving wedge block and the sliding wedge block. The male and female card slot bite slideway structure also realizes the anti-rotation and anti-slip function between the moving wedge block and the sliding wedge block and the main trunk trough body.

[0076] 2. Strength: The wedge-shaped locker saves about 1.5mm in height to strengthen the bottom of the main slot; it saves about 1mm in width, and screws above M3 can be used as the locking shaft, and the breaking torque of the locking shaft is increased by 2 times; the overall strength of the wedge-shaped locker is greatly increased, so the locking force that the wedge-shaped locker can provide is also doubled.

[0077] 3. Heat conduction: Due to the thickness of the bottom of the main tank body, the temperature uniformity of the first contact surface (module contact surface) is greatly improved. In addition, the side surrounding structure of the main tank body made of aluminum alloy and the physical design of the moving wedge block and the sliding wedge block greatly improve the heat conduction capacity of the wedge locker.

[0078] 4. The main slot body is provided with internal countersunk holes and internal threaded holes, which can meet the different size requirements when inserting the printed circuit board into the chassis slot in different ways, such as inserting the printed circuit board alone, inserting the printed circuit board with a cold plate, and inserting the shielding box.

[0079] In summary, the present invention can also achieve the following beneficial effects:

[0080] Under the premise of ensuring the conventional capabilities of the wedge-shaped locker, the present invention takes into account the anti-slip and anti-rotation functions of the wedge block and the insertion and locking requirements of various boards and cards of various sizes. At the same time, the structural strength of the wedge-shaped locker itself is greatly improved, the locking breaking torque is increased by 2 times, and the locking force that can be provided is also doubled; the thermal conductivity is greatly improved, and the temperature difference from the top surface of the wedge-shaped locker to the bottom surface of the main slot body is reduced to about 5°C.

[0081] Because the prior art still has the following defects:

[0082] The speed at which the thermal conductivity of wedge-shaped locks is improved cannot keep up with the speed at which the power consumption and heat flux density of equipment are increasing. As an important thermal conductive product, wedge-shaped locks not only directly affect the temperature, efficiency, and life of each device, but also affect the overall reliability of the equipment.

[0083] As an important heat-conducting product, the wedge locker must provide a low thermal resistance path from the heat source to the heat sink. In specific cases, it is divided into the internal thermal resistance of the wedge locker itself and the contact thermal resistance of the two surfaces connected and locked by the wedge locker;

[0084] 1) Current status of internal thermal resistance:

[0085] a. The wedge locker uses the method of converting the lateral movement of the wedge block into the expansion and locking of several wedge blocks. Since each wedge block and each wedge block and the trunk are movable independently, there will inevitably be gaps. At present, the market mainly reduces the thermal resistance by reducing the contact and matching gaps between each wedge block and the trunk. However, no matter how it is reduced, there will always be gaps. Since the thermal resistance of air is large, this gap has a significant impact on the thermal conductivity;

[0086] b. In addition, the roughness of the contact surface is reduced to increase the contact area and reduce the thermal resistance. However, due to the high processing requirements on the surface, the process control requirements and production costs will increase, and the economic benefits are low;

[0087] c. Potting under a fully sealed structure is even more difficult in production, assembly and cost.

[0088] 2) Current status of contact thermal resistance of connection locking surface:

[0089] a. At present, the contact thermal resistance of this surface is mainly achieved by minimizing the roughness of the two contact surfaces of the connecting locking parts (module 11, box body 12) and the contact surface of the wedge-shaped locker with these two surfaces. There are problems: on the one hand, the control of roughness will increase the difficulty of production, reduce the yield rate, and increase the production cost; second, in addition to the wedge-shaped locker, the links that need to be controlled include the module and the box body. However, in actual R&D and production projects, these parts are often not produced by the same unit, the control is weak, the energy required is large, and the control effect is not good.

[0090] Due to the wedge lock structure described above, after the fixed wedge block 4, the moving wedge block 5 and the sliding wedge block 6 are connected to the main slot body 1, a relatively sealed cavity is formed between the bottom surface of the moving wedge block 5 and the main slot body 1. In order to further reduce the internal thermal resistance of the wedge lock, the present invention fills the cavity with a thermal conductive filling layer 9 in this embodiment. The thermal conductive filling layer 9 can flow in the cavity without overflowing as the moving wedge block 5 moves, filling the gap and greatly reducing the internal thermal resistance. Note: Relative sealing is not absolute sealing, and there is a gap between the side wall of the moving wedge block 5 and the slot wall of the main slot body 1.

[0091] To further reduce the possibility of overflow of the heat-conducting filling layer 9 , the third lower outer edge 501 of the moving wedge block 5 is in contact with the inner wall of the main slot body 1 / and the inner edge of the main slot body 1 is in contact with the outer wall of the moving wedge block 5 .

[0092] Note: A / and B have three meanings, namely A alone, B alone, and both A and B.

[0093] The heat-conducting filling layer 9 is heat-conducting silicone grease or graphite powder. The thermal conductivity of the heat-conducting filling layer 9 is dozens or even hundreds of times that of air, which can greatly reduce the thermal resistance inside the wedge locker.

[0094] In order to further reduce the contact thermal resistance of the wedge-shaped locker, a flexible thermal conductive pad 10 is provided on the bottom surface of the main slot body 1 and the top surface of the movable wedge block 5 .

[0095] The flexible thermal pad 10 is made of a mixture of silica gel and thermally conductive powder. As a good thermally conductive gap filling material, the flexible thermal pad 10 has the advantages of high thermal conductivity (dozens of times that of air), no flow, good toughness, good compression filling, etc. When the wedge-shaped locker expands and locks, it can fill the gap in the thermal contact surface well and squeeze out the air, thereby greatly reducing the contact thermal resistance and improving the thermal conductivity of the wedge-shaped locker.

[0096] In summary, the present invention can also achieve the following beneficial effects:

[0097] 1. The present invention can significantly reduce the internal thermal resistance of the wedge-shaped locker through the structural design of the wedge-shaped locker and the injection of the thermal conductive filling layer under relatively low production cost, production control and assembly requirements, so that the wedge-shaped locker itself becomes a locking thermal conductive product with excellent performance; the structural design of the wedge-shaped locker can also well seal the thermal conductive filling layer in the wedge-shaped locker, which is not easy to cause overflow pollution, and does not reduce its operational practicality while reducing the internal thermal resistance.

[0098] 2. The present invention arranges flexible thermal pads on the bottom surface of the main slot body and the top surface of the moving wedge block, which not only concentrates the control of the original three parts (products) on one product, the wedge locker, greatly improves the convenience of operation and reduces the control cost from the perspective of engineering application, but also converts the original precise control of the roughness of each surface into conventional processing, greatly improves the yield rate, and greatly reduces the production cost.

[0099] 3. The present invention can not only reduce the internal thermal resistance of the wedge locker by several times, but can even reduce the thermal resistance of the heat dissipation system (module level, equipment level) by several times. In the existing methods, such a reduction often requires considerable effort and cost investment. The present invention simplifies and focuses on the replacement of the wedge locker itself, and the reduction in manpower, material resources and financial resources is immeasurable. In addition, since the wedge locker is being widely used under the trend of modularization, it is highly popularizable.

[0100] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A wedge-shaped locker with positive and negative wire transmission locking method, characterized in that: It comprises a main tank body (1), an anti-dropping block (2), a screw (3), a fixed wedge block (4) and a movable wedge block group; The fixed wedge block is fixedly connected to one end of the main trunk tank body in the length direction, the moving wedge block group is connected in the length direction of the main trunk tank body, and one end of the moving wedge block group cooperates with the fixed wedge block; The movable wedge block group comprises a movable wedge block (5) and a sliding wedge block (6) which cooperate with each other. There are more than two movable wedge blocks and sliding wedge blocks, which are sequentially connected in the length direction of the main trunk slot body. At least one sliding wedge block is connected to the other end in the length direction of the main trunk slot body and slides along the length direction of the main trunk slot body. The movable wedge block slides along the length direction of the main trunk slot body and moves along the height direction of the main trunk slot body. The anti-slip block is fixedly connected to the other end in the length direction of the main trunk slot body. The screw is threadedly connected to the anti-slip block and the sliding wedge block arranged at the other end in the length direction of the main trunk slot body at the same time. The screw comprises two sections of threads, one section of which is a right-handed normal thread and the other section is a left-handed reverse thread. Accordingly, the sliding wedge block and the anti-slip block are provided with a right-handed normal thread or a left-handed reverse thread corresponding to the position of the screw; When there are more than two moving wedge blocks and sliding wedge blocks, the moving wedge blocks and the sliding wedge blocks are staggered and connected in sequence in the length direction of the main trunk slot body, and the top surface of the moving wedge block is larger than the bottom surface and the top surface faces the main trunk slot body; The main trunk tank body is a U-shaped tank body, and first limit devices are provided at the notches of the tank walls on both sides of the length direction of the main trunk tank body; The lower ends of the outer walls on both sides of the sliding wedge block in the length direction are provided with second limiting devices, the lower end of the sliding wedge block is connected to the main trunk slot body, the first limiting device of the main trunk slot body contacts the second limiting device of the sliding wedge block and limits the sliding wedge block from jumping relative to the main trunk slot body; The lower ends of the outer walls on both sides of the length direction of the moving wedge block are provided with third limiting devices, the lower end of the moving wedge block is connected to the main trunk slot body, the first limiting device of the main trunk slot body contacts the third limiting device of the moving wedge block so that the lower end of the moving wedge block is limited in the main trunk slot body; The first limiting device is an inner edge (101) of the slot openings of the slot walls on both sides in the length direction of the main slot body; The second limiting device is a second lower outer edge (601) provided at the lower ends of the outer walls on both sides in the length direction of the sliding wedge block, the inner edge of the main slot body contacts the second lower outer edge of the sliding wedge block and limits the sliding wedge block from jumping relative to the main slot body; The third limiting device is a third lower outer edge (501) provided at the lower ends of the outer walls on both sides in the length direction of the moving wedge-shaped block, and the inner edge of the main trunk groove body contacts the third lower outer edge of the moving wedge-shaped block so that the lower end of the moving wedge-shaped block is limited in the main trunk groove body; When there are more than two moving wedge blocks and sliding wedge blocks, the moving wedge blocks and the sliding wedge blocks are staggered and connected in sequence in the length direction of the main trunk slot body, and the top surface of the moving wedge block is larger than the bottom surface and the top surface faces the main trunk slot body; The upper ends of the outer walls on both sides of the sliding wedge block in the length direction are also provided with a second upper outer edge (602); The upper ends of the outer walls on both sides of the movable wedge block in the length direction are also provided with a third upper outer edge (502); The lower ends of the outer walls on both sides of the length direction of the fixed wedge block are provided with fourth limiting devices, the lower end of the fixed wedge block is fixedly connected to the main trunk slot body, the first limiting device of the main trunk slot body contacts the fourth limiting device of the fixed wedge block and limits the fixed wedge block from jumping relative to the main trunk slot body; The fourth limiting device is a fourth lower outer edge (401) provided at the lower ends of the outer walls on both sides in the length direction of the fixed wedge block, the inner edge of the main trunk slot body contacts the fourth lower outer edge of the fixed wedge block and limits the fixed wedge block from jumping relative to the main trunk slot body, and the upper ends of the outer walls on both sides in the length direction of the fixed wedge block are also provided with a fourth upper outer edge (402); A relatively sealed cavity is formed between the bottom surface of the movable wedge block and the main slot body, and a heat-conducting filling layer (9) is filled in the cavity; The third lower outer edge of the moving wedge-shaped block is in contact with the inner wall of the main trunk slot body, and the inner edge of the main trunk slot body is in contact with the outer wall of the moving wedge-shaped block; The bottom surface of the main slot body and the top surface of the moving wedge block are both provided with a flexible heat-conducting pad (10).

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