Locking strip

Abstract

The utility model relates to the field of electronic equipment accessories, in particular to a locking strip which comprises a first movable block, a middle movable block set and a second movable block which are sequentially arranged in the first direction. The middle movable block group comprises N lower movable blocks and N + 1 upper movable blocks which are alternately arranged; second wedge surfaces are arranged at the two ends of the lower movable block, and a matching hole extending in the first direction is formed in the lower movable block; the upper movable block is provided with a first wedge face matched with the second wedge face and provided with a movable hole extending in the first direction. A first wedge surface is arranged at one end, facing the middle movable block group, of the first movable block; a second wedge face is arranged at the end, facing the middle movable block set, of the second movable block. The clamping device is simple and compact in structure, higher in clamping reliability, better in stability and better in heat conduction performance.

Description

Technical Field

[0001] The utility model relates to the field of electronic device accessories, in particular to a locking strip. Background Art

[0002] For electronic devices adopting modular design, plug-in electronic modules with better maintainability and flexibility are mostly selected. Usually, wedge-shaped locking devices are installed on both sides of the plug-in electronic module. After the module is inserted into the installation guide groove on the inner wall of the chassis, by tightening the wedge-shaped locking device, a squeezing force is generated in its expansion direction, so that the module is pressed tightly in the guide groove of the chassis to achieve rapid and reliable installation and maintenance of the module. Currently, the locking strip has a through-type mandrel, and a plurality of wedge blocks are arranged in an alternating manner on the mandrel. Generally, the bottom of the wedge block is provided with an opening, and each wedge block straddles the mandrel and is slidably matched with the mandrel. The end part advances the initial wedge block through a nut, and then the locking degree is adjusted. The locking strip expands only in one direction, and then presses the electronic module tightly in the installation groove. With this structure, it can only clamp the electronic module on one side in one direction, and its reliability is relatively low. Moreover, its heat conduction only conducts heat on the clamping surface, and the heat conduction effect is poor. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a locking strip aiming at the deficiencies of the prior art. It has a simple and compact structure, higher clamping reliability, better stability, and better heat conduction performance.

[0004] The purpose of the utility model is achieved as follows: A locking strip, comprising:

[0005] A first movable block, an intermediate movable block group and a second movable block arranged in sequence along a first direction;

[0006] The intermediate movable block group includes N lower movable blocks and N + 1 upper movable blocks arranged alternately;

[0007] Both ends of the lower movable block are provided with second wedge surfaces, and the lower movable block is provided with a fitting hole extending along the first direction for a core rod to pass through;

[0008] The upper movable block is provided with a first wedge surface adapted to the second wedge surface, and the upper movable block is provided with a movable hole extending along the first direction for a core rod to pass through;

[0009] One end of the first movable block facing the intermediate movable block group is provided with a second wedge surface;

[0010] One end of the second movable block facing the intermediate movable block group is provided with a second wedge surface;

[0011] The first wedge surface and the second wedge surface are tapered from their proximal ends to their distal ends in both a second direction and a third direction, and any two of the first, second, and third directions are perpendicularly crossed;

[0012] The core rod passes through the first movable block, the intermediate movable block group and the second movable block. Among them, there are movable clearances between the movable holes and the core rod in the second direction and the third direction. The first movable block and the second movable block are respectively connected to the core rod, and the distance between the first movable block and the second movable block is adjustable.

[0013] A threaded hole is provided on the first movable block. The core rod is a screw rod. The front section of the screw rod is threadedly connected to the first movable block, and the head of the screw rod abuts against the outer end of the second movable block.

[0014] A retaining ring is fixedly connected to the distal end of the core rod extending out of the first movable block.

[0015] It further includes:

[0016] The first reed, correspondingly arranged in the movable hole, includes:

[0017] A back part bulging in the second direction, and a first connecting part fixedly connected to the inner wall of the movable hole is provided on the back part;

[0018] Two laterally extending elastic foot ends, configured to form an elastic abutment with the core rod.

[0019] It further includes:

[0020] The second reed, correspondingly arranged in the movable hole, is orthogonally arranged with the first reed, and includes:

[0021] A back part bulging in the third direction, and a second connecting part fixedly connected to the inner wall of the movable hole is provided on the back part;

[0022] Two laterally extending elastic foot ends, abutting against the core rod;

[0023] Among them, a lateral notch is provided on the back part of the second reed. The axial length of the first reed is less than the length of the lateral notch, and one side part of the first reed is embedded in the lateral notch.

[0024] Both the first connecting part and the second connecting part are hemispherical convex points on the convex plate surface. Corresponding concave holes are provided on the inner wall of the upper movable block, and the convex points and the concave holes are fixed by snap connection.

[0025] The movable hole is a rectangular hole, and the mating hole is a circular hole.

[0026] Upper limiting plates extending out of the first wedge surface are arranged on the upper sections of both ends of the upper movable block, and lower limiting plates extending out of the second wedge surface are arranged on the lower sections of both ends of the lower movable block.

[0027] Among them, at least one side wall of the lower movable block or the upper movable block is provided with a boss for connecting an electronic module, and a threaded connection hole is provided on the boss.

[0028] The two elastic foot ends of the first reed and the second reed are flat, and both the first wedge surface and the second wedge surface are planes.

[0029] Adopting the above solution, the beneficial effects are as follows. The two limit blocks on the central core rod adjust their spacing to squeeze the first movable block, the movable block group, and the second movable block. Since the first wedge surface and the second wedge surface both taper from their proximal ends to their distal ends in the second and third directions when moving towards each other, there are relative acting forces and a tendency of relative movement in these two sub-directions during movement. Because the lower movable block is provided with a mating hole and remains in a stable position, while the upper movable block is provided with a movable hole, during the interaction, the upper movable block can shift relative to the core rod in the second and third directions, resulting in relative movement relative to the core rod and the first movable block, which is used to move in the second and third directions, can be clamped in these two directions, has two clamping contact positions, has a large contact area, is not prone to crosstalk in the second and third directions, and at the same time, due to having contact surfaces in two directions, has better heat conduction performance and better heat transfer efficiency. In the present utility model, the upper movable block and the lower movable block are convenient for loading and unloading, easy to replace, have high maintainability, can be assembled with different numbers according to requirements to form movable block groups of different lengths, and cooperate with a suitable core rod to change the length of the locking strip to meet different length requirements. The present utility model has a simple and compact structure, higher clamping reliability, better stability, and better heat conduction performance.

[0030] The following further illustrates the present utility model with reference to the drawings and specific embodiments. Description of the Drawings

[0031] Figure 1 is a structural schematic diagram of the present utility model;

[0032] Figure 2 is a first perspective exploded view of the present utility model;

[0033] Figure 3 is Figure 2 an enlarged view of part A in

[0034] Figure 4 is a second perspective exploded view of the present utility model;

[0035] Figure 5 is Figure 4 an enlarged view of part B in

[0036] In the accompanying drawings, a is the first wedge surface, b is the second wedge surface, 100 is the first movable block, 120 is the threaded hole, 200 is the intermediate movable block group, 210 is the lower movable block, 212 is the mating hole, 213 is the lower limit plate, 220 is the upper movable block, 222 is the movable hole, 223 is the concave cavity, 224 is the upper limit plate, 300 is the second movable block, 400 is the core rod, 410 is the head, 420 is the retaining ring, 500 is the first reed, 511 is the first connecting portion, 600 is the second reed, 610 is the second connecting portion, 611 is the lateral notch, 700 is the boss, and 710 is the threaded connection hole. Detailed implementation manners

[0037] Referring to the accompanying drawings, specific implementation manners of the present utility model will be described in detail.

[0038] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms center, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In the description of the present application, the terms first and second are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with the first and second may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of plurality is two or more. It should be noted that in actual applications, due to the limitations of device accuracy or installation errors, absolute parallel or perpendicular effects are difficult to achieve. In the present application, the descriptions of vertical, parallel or in the same direction are not absolute limiting conditions, but indicate that a vertical or parallel structural setting can be achieved within a preset error range and the corresponding preset effects can be achieved. In this way, the technical effects of the defined features can be maximally realized, and the corresponding technical solutions are easy to implement and have high feasibility.

[0040] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0041] See Figures 1 to 5 , an embodiment of a locking strip. The locking strip includes a first movable block 100, an intermediate movable block group 200, and a second movable block 300 arranged in sequence along a first direction. Its material can be made of aluminum alloy and has high thermal conductivity;

[0042] Wherein, the intermediate movable block group 200 includes N lower movable blocks 210 and N + 1 upper movable blocks 220 arranged alternately, N is an integer, and Figure 1 shows three lower movable blocks 210 and four upper movable blocks 220,

[0043] Both ends of the lower movable block 210 are provided with a second wedge surface b. The lower movable block 210 is provided with a mating hole 212 extending along the first direction for the core rod 400 to pass through,

[0044] The upper movable block 220 is provided with a first wedge surface a adapted to the second wedge surface b. The upper movable block 220 is provided with a movable hole 222 extending along the first direction for the core rod 400 to pass through and extend in the direction;

[0045] One end of the first movable block 100 facing the intermediate movable block group 200 is provided with a second wedge surface b; one end of the second movable block 300 facing the intermediate movable block group 200 is provided with a second wedge surface b;

[0046] The first wedge surface a and the second wedge surface b are tapered from their proximal ends to their distal ends in both the second direction and the third direction. The first wedge surface a and the second wedge surface b can both be flat surfaces, and of course, they can also be curved surfaces.

[0047] The core rod 400 passes through the first movable block 100, the intermediate movable block group 200 and the second movable block 300. Among them, there is a movable gap between the movable hole 222 and the core rod 400 in the second direction and the third direction. The first movable block 100 and the second movable block 300 are respectively connected to the core rod 400, and the distance between the first movable block 100 and the second movable block 300 is adjustable. The adjustment of the distance can be achieved by mechanisms such as a wedge block tensioning mechanism and an eccentric wheel tensioning mechanism. In this embodiment, it is achieved through threaded connection. Specifically, a threaded hole 120 is provided on the first movable block 100, the core rod 400 is a screw rod, the front section of the screw rod is threadedly connected to the first movable block 100, and the head 410 of the screw rod abuts against the outer end of the second movable block 300. By rotating the screw rod, the first movable block 100 is tightened, and the first movable block 100 on the screw rod moves relative to the second movable block 300, and then the intermediate movable block group 200 is extruded. Further, a retaining ring 420 is fixedly connected to the distal end of the core rod 400 extending out of the first movable block 100. The fixed connection can be carried out by riveting, welding, or clamping. By setting the retaining ring 420, it can prevent the first movable block 100 from falling off the screw rod when the screw rod is rotated excessively.

[0048] In some embodiments, the locking strip further includes a first spring piece 500, which is correspondingly arranged in the movable hole 222, and includes a back portion bulging in the second direction and two laterally extending elastic foot ends. The back portion is provided with a first connecting portion 511 fixedly connected to the inner wall of the movable hole 222;

[0049] It also includes two laterally extending elastic foot ends, configured to form an elastic abutment with the core rod 400. Through the first spring piece 500, the upper movable block 220 can be reset in the second direction, and the first movable block 100 can maintain a certain acting force relative to the core rod 400, so that the movable blocks are arranged more regularly on the core rod 400, which is convenient for loading and unloading. When the locking strip is loosened and reset, the biting inclined surface can be automatically loosened.

[0050] Furthermore, the locking strip further includes a second spring 600, which is correspondingly arranged in the movable hole 222 and arranged orthogonally to the first spring 500. The second spring 600 includes a back portion raised in the third direction, and the back portion is provided with a second connecting portion 610 fixedly connected to the inner wall of the movable hole 222; and also includes two laterally extending elastic foot ends, which abut against the core rod 400. The spring can be V-shaped, inferior arc-shaped or π-shaped, and the two elastic foot ends of the first spring 500 and the second spring 600 can be flat and can slide relative to the core rod 400; wherein the back of the second spring 600 is provided with a lateral notch 611, the axial length of the first spring is less than the length of the lateral notch 611, and a side edge of the first spring is embedded in the lateral notch 611. By adopting this scheme, the first movable block 100 can be reset in the third direction by the second spring 600 in the movable hole 222, which is orthogonal to the second direction, that is, in the third direction, so that the first movable block 100 can maintain a certain force relative to the core rod 400, so that the movable block is arranged more regularly on the core rod 400, which is convenient for loading and unloading. When the locking strip is released, the reset can automatically release the bitten inclined surface. After pre-installation, the entire locking strip is in a regular strip shape, and the first movable block 100 is stretched on the core rod 400, pre-tightened in the second direction and the third direction, and at the same time, the second movable block 300 has a force on each other, which is convenient for assembly. Especially when the installation groove is deeply inserted, the entire locking regular strip shape is convenient for quick assembly. At the same time, when it is removed, the elastic force in two directions can make the first movable block 100 reset quickly. The locking strip is in a regular strip shape, which is also easy to remove, and avoids the crooked movable block from being hooked in the slot and other positions.

[0051] Since two reeds are provided, in order to avoid movement interference between the reeds, a lateral notch 611 is provided on the back of the second reed 600, so that the reed can have a larger width and is not easy to swing in the movable hole 222. At the same time, the core rod 400 can have a larger sliding distance relative to the reed in its width, and at the same time, the force of the reed on the core rod 400 is avoided as much as possible. The provision of the lateral notch 611 can prevent the two reeds from scratching and interfering at the adjacent edges, affecting the deformation of the reed.

[0052] In some embodiments, the first connection part 511 and the second connection part 610 are both hemispherical convex points of the raised plate surface, and the inner wall of the upper movable block 220 is correspondingly provided with a matching concave hole 223, and the convex point and the concave hole 223 are fixed by snapping. The concave hole 223 can be formed by a through hole or a blind hole structure, and the hemispherical convex point can be quickly adapted to the concave hole 223, which can be easy to assemble. When the hemispherical convex point is adapted to the concave hole 223, the movement of the spring relative to the first movable block 100 can be limited in the first direction, so that the spring relative to the first movable block 100 maintains a stable position. Of course, the use of this structure is simple and compact, and no complex structure will be designed on the movable block, which can reduce costs and ensure that the movable block has high strength and thermal conductivity.

[0053] In some embodiments, the movable hole 222 is a rectangular hole. By providing a rectangular hole, a relatively large gap can be provided in two directions to facilitate the movement of the first movable block 100 relative to the core rod 400. The mating hole 212 is a circular hole, which is convenient to machine and can meet the requirement for the screw to pass through.

[0054] In some embodiments, upper limiting plates 224 extending outward the first wedge surface a are provided at the upper segments of the two ends of the upper movable block 220, and lower limiting plates 213 extending outward the second wedge surface b are provided at the lower segments of the two ends of the lower movable block 210. The provision of the limiting plates can provide a relatively large contact and support surface, which is better for heat transfer. Moreover, when the locking strip is in the retracted state, the limiting plates can be used for limiting and contact the top surface or the ground of the adjacent movable block, playing a role in limiting, so that when the entire locking strip is in the locked state, the movable blocks restrain each other to form a regular strip structure.

[0055] In some embodiments, a boss 700 for connecting an electronic module is provided on the side wall of at least one of the lower movable or upper movable blocks 220, and a threaded connection hole 710 is provided on the boss 700. With this structure, the locking strip and the electronic module can be pre-assembled first, and the electronic module can be connected to the threaded connection hole 710 by screws. When it is later installed in the installation groove, it can be installed together, which can improve the assembly efficiency. Moreover, it can keep the relative position of the electronic module and the locking strip stable, enable the designed heat generation area to correspond to the position of the locking strip, and facilitate heat transfer.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A locking strip, characterized in that: include: A first movable block (100), an intermediate movable block group (200), and a second movable block (300) arranged in sequence along a first direction; The intermediate movable block group (200) comprises N lower movable blocks (210) and N+1 upper movable blocks (220) which are arranged alternately; The two ends of the lower movable block (210) are provided with second wedge surfaces (b), and the lower movable block (210) is provided with a matching hole (212) extending along the first direction for allowing the core rod (400) to pass through; The upper movable block (220) is provided with a first wedge surface (a) adapted to the second wedge surface (b), and the upper movable block (220) is provided with a movable hole (222) extending along a first direction for allowing the core rod (400) to pass through; A second wedge surface (b) is provided on one end of the first movable block (100) facing the middle movable block group (200); The second movable block (300) is provided with a second wedge surface (b) at one end facing the middle movable block group (200); The first wedge surface (a) and the second wedge surface (b) are both gradually tapered from their proximal ends to their distal ends in the second direction and the third direction, and any two of the first, second and third directions intersect vertically; A core rod (400) passes through a first movable block (100), an intermediate movable block group (200) and a second movable block (300), wherein a movable gap is provided between the movable hole (222) and the core rod (400) in a second direction and a third direction; the first movable block (100) and the second movable block (300) are respectively connected to the core rod (400), and the spacing between the first movable block (100) and the second movable block (300) is adjustable.

2. The locking strip according to claim 1, characterized in that: A threaded hole (120) is provided on the first movable block (100); the core rod (400) is a screw rod; the front section of the screw rod is threadedly connected to the first movable block (100); and the head section (410) of the screw rod abuts against the outer end section of the second movable block (300).

3. The locking strip according to claim 1, characterized in that: The core rod (400) extends outwardly from the first movable block (100) and is fixedly connected to a retaining ring (420) on the distal end thereof.

4. The locking strip according to claim 1, characterized in that: Also includes: The first reed (500) is correspondingly arranged in the movable hole (222), and comprises: A back portion raised in the second direction, the back portion being provided with a first connection portion (511) fixedly connected to the inner wall of the movable hole (222); Two laterally extending elastic foot ends are configured to form elastic abutment with the core rod (400).

5. The locking strip according to claim 4, characterized in that: Also includes: The second reed (600) is correspondingly arranged in the movable hole (222) and is arranged orthogonally to the first reed (500), and comprises: A back portion that bulges in the third direction, the back portion being provided with a second connecting portion (610) that is fixedly connected to the inner wall of the movable hole (222); Two laterally extending elastic foot ends abut against the core rod (400); The back of the second reed (600) is provided with a lateral notch (611), the axial length of the first reed (500) is smaller than the length of the lateral notch (611), and a side edge of the first reed (500) is embedded in the lateral notch (611).

6. The locking strip according to claim 5, characterized in that: The first connection portion (511) and the second connection portion (610) are both hemispherical protrusions protruding from the plate surface, and a matching recess (223) is correspondingly provided on the inner wall of the upper movable block (220), and the protrusion and the recess (223) are fixed by snapping.

7. The locking strip according to claim 1, characterized in that: The movable hole (222) is a rectangular hole, and the matching hole (212) is a circular hole.

8. The locking strip according to claim 1, characterized in that: Upper sections at both ends of the upper movable block (220) are provided with upper limit plates (224) extending outwardly from the first wedge surface (a), and lower sections at both ends of the lower movable block (210) are provided with lower limit plates (213) extending outwardly from the second wedge surface (b).

9. The locking strip according to claim 1, characterized in that: A boss (700) for connecting an electronic module is provided on the side wall of at least one of the lower movable block (210) or the upper movable block (220), and a threaded connection hole (710) is provided on the boss (700).

10. The locking strip according to claim 5, characterized in that: The two elastic foot ends of the first reed (500) and the second reed (600) are in the shape of flat plates, and the first wedge surface (a) and the second wedge surface (b) are both planes.

Images