Three-stage locking strip

Abstract

The application discloses a three-section locking strip, which comprises a screw rod assembly, a first wedge-shaped assembly, a second wedge-shaped assembly and a third wedge-shaped assembly, and the first wedge-shaped assembly, the third wedge-shaped assembly and the second wedge-shaped assembly are sequentially installed on the screw rod assembly. The screw rod assembly comprises a T-shaped slide rail, a threaded rod and an elastic component, the T-shaped slide rail is internally provided with a first channel and a second channel communicated with the first channel, the second channel is arranged at one end of the T-shaped slide rail, the cross-sectional area of the second channel is larger than that of the first channel, the elastic component is arranged in the second channel, and the threaded rod is rotationally installed in the elastic component and the first channel. The second wedge-shaped assembly is provided with a threaded hole, and the threaded rod is connected with the threaded hole. Rotating the threaded rod enables the threaded rod to relatively rotate and axially move in the threaded hole of the second wedge-shaped assembly, drives the first wedge-shaped assembly and the second wedge-shaped slider to relatively approach or move away from the third wedge-shaped assembly, so that the up-down position of the third wedge-shaped assembly is changed, and the locking or unlocking of the locking strip is realized.

Description

Technical Field

[0001] This application relates to the field of locking device technology, and in particular to a three-section locking bar. Background Technology

[0002] With the continuous development of electronic technology, more and more communication chassis are adopting modular designs. To facilitate maintenance and installation, PCBs are usually designed as pluggable modules. These pluggable modules have locking devices on both sides. After the module is inserted into the chassis's mounting guide slot, tightening the locking devices on both sides creates a compressive force in the expansion direction, thus locking the PCB module into the chassis guide slot. Currently, common locking strip products on the market suffer from problems such as jamming, inability to unlock, and, during repeated use, component misalignment, slippage, and even component disintegration, severely affecting usability. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. This application provides a three-section locking strip that can maintain the stability of the overall structure during repeated use, thereby extending its service life.

[0004] The three-section locking strip according to an embodiment of this application includes:

[0005] A screw assembly includes a T-shaped slide rail, a threaded rod, and an elastic component. The T-shaped slide rail has a first channel and a second channel communicating with the first channel. The second channel is located at the first end of the T-shaped slide rail, and the cross-sectional area of ​​the second channel is larger than that of the first channel. The elastic component is located in the second channel, and the threaded rod passes through the elastic component and the first channel in sequence. The threaded rod is rotatably disposed in the first channel and the second channel.

[0006] A first wedge-shaped component, which is slidably disposed on the T-shaped slide rail at the first end;

[0007] The second wedge assembly has a threaded hole, the threaded rod is connected to the threaded hole, and the second wedge assembly is fixedly mounted on the other end of the T-shaped slide rail;

[0008] A third wedge assembly is disposed on the T-shaped slide rail between the first wedge assembly and the second wedge assembly.

[0009] The three-section locking strip according to the embodiments of this application has at least the following beneficial effects:

[0010] The three-section locking bar of this application includes a screw assembly, a first wedge assembly, a second wedge assembly, and a third wedge assembly. The first wedge assembly, the third wedge assembly, and the second wedge assembly are sequentially mounted on the screw assembly. The screw assembly includes a T-shaped slide rail, a threaded rod, and an elastic component. The T-shaped slide rail has a first channel and a second channel, with the second channel located at the first end of the T-shaped slide rail, and the first and second channels are connected. The cross-sectional area of ​​the second channel is larger than that of the first channel. The elastic component is fixedly mounted in the second channel. The threaded rod passes through the elastic component and the first channel sequentially, and is rotatably mounted in the first and second channels. The first wedge assembly is slidably mounted on the T-shaped slide rail at the first end. The second wedge assembly is fixedly mounted on the T-shaped slide rail at the opposite end of the first end. The second wedge assembly has a threaded hole, and the threaded rod is threadedly connected to the threaded hole. The third wedge assembly is mounted on the T-shaped slide rail between the first and second wedge assemblies. By rotating the threaded rod, the threaded rod rotates relative to the threaded hole of the second wedge assembly and moves axially. During axial movement, the second wedge assembly remains stationary, while the first wedge assembly moves axially along the T-shaped slide rail. The first and second wedge assemblies move closer to or further away from the third wedge assembly relative to it, thereby changing the vertical position of the third wedge assembly and locking or unlocking the locking strip. Moving the third wedge assembly upwards locks it in place, and vice versa.

[0011] The three-section locking bar of this application achieves a compact, stable, convenient, and reusable locking structure by installing three wedge-shaped components on a T-shaped slide rail with a guide structure. It also has functions such as automatic return, which can effectively improve the reliability of assembly and operational safety.

[0012] According to some embodiments of this application, the screw assembly further includes a limiting member disposed at the end of the threaded rod.

[0013] According to some embodiments of this application, the second wedge assembly includes a slider body and a threaded block, the threaded block being fixedly disposed on the slider body, and the threaded hole being disposed on the threaded block.

[0014] According to some embodiments of this application, the second wedge assembly further includes a positioning pin, the threaded block is provided with at least two positioning holes, the slider body is provided with at least two through holes, the positioning holes and the through holes form a hole channel, and the positioning pin is disposed in the hole channel.

[0015] According to some embodiments of this application, there are two positioning pins and two positioning holes, and four through holes.

[0016] According to some embodiments of this application, the elastic component is configured as a spring.

[0017] According to some embodiments of this application, a spring washer is provided between the first wedge assembly and the beginning end of the threaded rod.

[0018] According to some embodiments of this application, a flat washer is provided between the first wedge assembly and the beginning end of the threaded rod.

[0019] According to some embodiments of this application, the bottom surface of the T-shaped slide rail is provided with several fixing components.

[0020] According to some embodiments of this application, the first end of the threaded rod is provided with a Phillips head screwdriver or a slotted head screwdriver. Attached Figure Description

[0021] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of a three-section locking strip according to an embodiment of this application;

[0023] Figure 2 for Figure 1 A schematic diagram of the top surface structure of the three-section locking strip;

[0024] Figure 3 for Figure 1 A schematic diagram of the bottom structure of the three-section locking strip;

[0025] Figure 4 This is a locking diagram of a three-section locking strip according to an embodiment of this application;

[0026] Figure 5 This is a schematic diagram illustrating the unlocking of a three-section locking bar according to an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the structure of a screw assembly according to an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the structure of a T-shaped slide rail according to an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the structure of a third wedge-shaped component according to an embodiment of this application.

[0030] Figure label:

[0031] Screw assembly 1; T-shaped slide rail 11; first channel 111; second channel 112; fixing component 113; threaded rod 12; threaded rod head 121; elastic component 13; limiting component 14; spring washer 15; flat washer 16;

[0032] First wedge-shaped component 2;

[0033] Second wedge assembly 3; slider body 31; threaded block 32; threaded hole 33; positioning hole 34; through hole 35; positioning pin 36;

[0034] Third wedge component 4. Detailed Implementation

[0035] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0036] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] The following reference Figures 1 to 8 Describe the three-section locking strip in the embodiments of this application.

[0039] according to Figures 1 to 7As shown, one embodiment of the three-section locking bar of this application includes a screw assembly 1, a first wedge assembly 2, a second wedge assembly 3, and a third wedge assembly 4. The first wedge assembly 2, the third wedge assembly 4, and the second wedge assembly 3 are sequentially mounted on the screw assembly 1. The screw assembly 1 includes a T-shaped slide rail 11, a threaded rod 12, and an elastic component 13. The T-shaped slide rail 11 is used to support the first wedge assembly 2, the second wedge assembly 3, the third wedge assembly 4, the threaded rod 12, and the elastic component 13. The outer cross-section of the T-shaped slide rail 11 is T-shaped. The second wedge assembly 3 is fixedly mounted on the T-shaped slide rail 11. Under the constraint of the T-shaped slide rail 11, the first wedge assembly 2 and the third wedge assembly 4 can only move axially along the T-shaped slide rail 11 and cannot rotate relative to the T-shaped slide rail 11. The T-shaped slide rail 11 has a first channel 111 and a second channel 112 arranged along its length. The second channel 112 is located at the first end of the T-shaped slide rail 11, and the first channel 111 and the second channel 112 are connected and pass through both ends of the T-shaped slide rail 11. The cross-sectional area of ​​the second channel 112 is larger than that of the first channel 111, and the elastic component 13 is fixedly installed in the second channel 112. The threaded rod 12 is arranged to pass through the elastic component 13 and the first channel 111 in sequence, and is rotatably installed in the first channel 111 and the second channel 112, and is rotatably arranged relative to the T-shaped slide rail 11. The first wedge-shaped assembly 2 is slidably installed on the T-shaped slide rail 11 at the first end and contacts the first end 121 of the threaded rod. The second wedge-shaped assembly 3 is fixedly installed on the T-shaped slide rail 11 at the other end opposite to the first end, and the second wedge-shaped assembly 3 is provided with a threaded hole 33, which is threadedly connected to the thread at the end of the threaded rod 12. The third wedge assembly 4 is mounted on the T-shaped slide rail 11 between the first wedge assembly 2 and the second wedge assembly 3.

[0040] Locking bar locking: Rotate threaded rod 12 about the first direction. Threaded rod 12 rotates relative to threaded hole 33 of second wedge assembly 3 and moves axially to the left. During the leftward movement, second wedge assembly 3 remains stationary, while first wedge assembly 2 gradually presses against elastic member 13. First wedge assembly 2 moves to the left along T-shaped slide rail 11, causing first wedge assembly 2 and second wedge assembly 3 to approach and press against third wedge assembly 4. This presses against and supports third wedge assembly 4, causing it to move upward, thus locking the locking bar.

[0041] The second direction is opposite to the first direction.

[0042] Locking bar unlocking: Rotate the threaded rod 12 around the second direction. The threaded rod 12 rotates relative to the threaded hole 33 of the second wedge assembly 3 and moves axially to the right. During the rightward movement, the second wedge assembly 3 remains stationary, and the compressed elastic component 13 automatically resets, pushing the first wedge assembly 2 to move to the right along the T-shaped slide rail 11. This causes the first wedge assembly 2 and the second wedge assembly 3 to gradually move away from the third wedge assembly 4. The support of the first wedge assembly 2 and the second wedge assembly 3 on the third wedge assembly 4 is gradually released, and the third wedge assembly 4 unlocks and moves downward, thus unlocking the locking bar.

[0043] The three-section locking bar of this application achieves a compact, stable, convenient, and reusable locking structure by mounting three wedge-shaped components, a threaded rod 12, and an elastic component 13 on a T-shaped slide rail 11 with a guide structure. Under the constraint of the T-shaped slide rail 11, the first wedge component 2 and the third wedge component 4 can only move axially along the T-shaped slide rail 11 and cannot rotate relative to it, preventing misalignment caused by relative rotation between different wedge components when the locking bar is unlocked. The elastic component 13 enables an automatic return function, effectively improving the reliability and operational safety of the three-section locking bar of this application.

[0044] In some embodiments, the threaded rod 12 is made of 304 stainless steel, and the T-shaped slide rail 11 is made of 7075 high-strength aluminum alloy.

[0045] according to Figures 1 to 6 As shown, in one embodiment of this application, the screw assembly 1 further includes a limiting component 14, which is fixedly disposed at the end of the threaded rod 12. The limiting component 14 is disposed outside the second wedge assembly 3 and is used to limit the stroke of the threaded rod 12 during axial movement. When the locking bar is unlocked, the threaded rod 12 rotates to the right, and the limiting component 14 acts as an axial stop, preventing the threaded rod 12 from excessively rotating and disengaging from the second wedge assembly 3, thereby ensuring the structural integrity and operational stability of the three-section locking bar.

[0046] In some embodiments, the limiting component 14 is specifically configured as a limiting nut, through which the threaded rod 12 passes, and the limiting nut is fixed to the end of the threaded rod 12 by welding. In other embodiments, the limiting component 14 may also be configured as a nut.

[0047] according to Figure 2 , Figure 3 and Figure 8As shown, in one embodiment of this application, the second wedge assembly 3 includes a slider body 31 and a threaded block 32. The threaded block 32 is fixedly embedded in the slider body 31, together forming a complete second wedge assembly 3. A threaded hole 33 is provided on the threaded hole 33, and the threaded hole 33 is threadedly connected to the end of the threaded rod 12. The slider body 31 and the threaded block 32 are separately provided, which facilitates the replacement of the threaded hole 33 if it becomes stripped, requiring only the replacement of the threaded block 32, thus reducing maintenance costs.

[0048] according to Figure 8 As shown, in one embodiment of this application, the threaded block 32 is provided with at least two positioning holes 34, and the slider body 31 is provided with at least two through holes 35. The number of positioning holes 34 and through holes 35 are the same and they are correspondingly arranged, forming a hole channel. The second wedge-shaped slider also includes a positioning pin 36, which is inserted into the hole channel to fix the threaded block 32 and the slider body 31, thereby improving the overall assembly quality.

[0049] according to Figure 8 As shown, in one embodiment of this application, there are two positioning pins 36 and two positioning holes 34, and four through holes 35. The positioning holes 34 penetrate both sides of the threaded block 32, and two through holes 35 are provided on both sides of the slider body 31. The through holes 35, the positioning holes 34, and the through holes 35 form a hole channel, and the positioning pins 36 are sequentially inserted into the hole channel formed by the through holes 35, the positioning holes 34, and the through holes 35.

[0050] In some embodiments, two positioning pins 36, two positioning holes 34, and two through holes 35 are provided. Both through holes 35 are located on the same side of the slider body 31, and the positioning pins 36 are inserted into the through holes 35 and the positioning holes 34 in sequence. The positioning pins 36 are cylindrical pins, and the structural integrity of the three-section locking strip is ensured by an interference fit.

[0051] according to Figure 6 and Figure 7 As shown, in one embodiment of this application, the elastic component 13 is configured as a spring. The spring is installed in the second channel 112. During assembly, the threaded rod 12 is inserted into the spring from the outside of the second channel 112 and then extends to the first channel 111 of the T-shaped slide rail 11, ensuring that the spring is sleeved between the first end 121 of the threaded rod and the inner wall of the T-shaped slide rail 11.

[0052] When locking by rotating the threaded rod 12 in the first direction, the threaded rod 12 rotates relative to the threaded hole 33 of the second wedge assembly 3 and moves axially to the left. During the leftward movement, the second wedge assembly 3 remains stationary, and the first wedge assembly 2 gradually compresses the spring, storing elastic potential energy. When unlocking by rotating the threaded rod 12 in the second direction, the threaded rod 12 moves axially to the right in the opposite direction. During the rightward movement, the second wedge assembly 3 remains stationary, and the spring pushes back the first wedge assembly 2 and the threaded rod 12 under the action of the release force, so that the locking bar returns to the unlocked state. Under the action of the spring, some of the pushing force can be absorbed during the locking process, reducing the impact wear between multiple wedge assemblies and extending their service life; during the unlocking process, the locking bar can be easily unlocked under the action of the release force.

[0053] according to Figure 6 As shown, in one embodiment of this application, a spring washer 15 is provided between the first wedge assembly 2 and the beginning end of the threaded rod 12. The spring washer 15 can buffer overload impact during the locking process, reducing direct impact wear on the first wedge assembly 2. In long-term use, the spring washer 15 can compensate for the vibration caused by the client side supported by the locking bar, preventing the threaded rod 12 from moving axially due to vibration, thereby maintaining the stability of the locking bar.

[0054] according to Figure 6 As shown, in one embodiment of this application, a flat washer 16 is provided between the first wedge-shaped component 2 and the beginning end of the threaded rod 12. The flat washer 16 can increase the fastening contact area, reduce local point contact pressure, and disperse the pressure of the beginning end 121 of the threaded rod on the first wedge-shaped component 2, thereby extending its service life.

[0055] In some embodiments, the flat washer 16 is disposed between the spring washer 15 and the threaded rod end 121.

[0056] according to Figure 3 As shown in one embodiment of this application, the bottom surface of the T-shaped slide rail 11 is provided with a plurality of fixing components 113.

[0057] In some embodiments, the fixing component 113 is specifically configured as a screw hole, which is connected to the through hole 35 on the equipment bracket by a bolt, so that the locking strip is fixed on the equipment bracket. Specifically, five screw holes are provided, which are equidistantly arranged on the bottom surface of the T-shaped slide rail 11.

[0058] according to Figure 6 As shown, in one embodiment of this application, the first end of the threaded rod 12 is provided with a Phillips head screwdriver or a flathead screwdriver. By inserting a screwdriver into the screwdriver's head 121, the threaded rod 12 is rotated by rotating the screwdriver, which in turn causes the first wedge assembly 2 to move axially, thereby realizing the locking or unlocking action of the three-section locking strip.

[0059] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A three-section locking strip, characterized in that: include A screw assembly includes a T-shaped slide rail, a threaded rod, and an elastic component. The T-shaped slide rail has a first channel and a second channel communicating with the first channel. The second channel is located at the first end of the T-shaped slide rail, and the cross-sectional area of ​​the second channel is larger than that of the first channel. The elastic component is located in the second channel, and the threaded rod passes through the elastic component and the first channel in sequence. The threaded rod is rotatably disposed in the first channel and the second channel. A first wedge-shaped component, which is slidably disposed on the T-shaped slide rail at the first end; The second wedge assembly has a threaded hole, the threaded rod is connected to the threaded hole, and the second wedge assembly is fixedly mounted on the other end of the T-shaped slide rail; A third wedge assembly is disposed on the T-shaped slide rail between the first wedge assembly and the second wedge assembly.

2. The three-section locking strip according to claim 1, characterized in that: The screw assembly also includes a limiting component disposed at the end of the threaded rod.

3. The three-section locking strip according to claim 1, characterized in that: The second wedge assembly includes a slider body and a threaded block, the threaded block being fixedly mounted on the slider body, and the threaded hole being disposed on the threaded block.

4. The three-section locking strip according to claim 3, characterized in that: The second wedge assembly further includes a positioning pin, the threaded block is provided with at least two positioning holes, the slider body is provided with at least two through holes, the positioning holes and the through holes form a hole channel, and the positioning pin is disposed in the hole channel.

5. The three-section locking strip according to claim 4, characterized in that: There are two positioning pins and two positioning holes, and four through holes.

6. The three-section locking strip according to claim 1, characterized in that: The elastic component is configured as a spring.

7. The three-section locking strip according to claim 6, characterized in that: A spring washer is provided between the first wedge assembly and the beginning end of the threaded rod.

8. The three-section locking strip according to claim 1, characterized in that: A flat washer is provided between the first wedge assembly and the beginning of the threaded rod.

9. The three-section locking strip according to claim 1, characterized in that: The bottom surface of the T-shaped slide rail is provided with several fixing components.

10. The three-section locking strip according to claim 1, characterized in that: The threaded rod is provided with a Phillips head screwdriver or a flathead screwdriver at its head.

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