Locking device with variable total length

Abstract

The utility model relates to the technical field of cases, and discloses a locking device with variable total length, which comprises a guide rail, a wedge block I is arranged on one side of the outer wall of the guide rail, a cross bolt is mounted in the wedge block I and the guide rail through a thread groove, and a wedge block II, a wedge block III, a wedge block IV and a wedge block V which are sequentially arranged are connected to the outer wall of the guide rail in a sliding manner. An adjusting bolt is in threaded connection with one side in the guide rail, the outer wall of the adjusting bolt is arranged in the fifth wedge block in a penetrating mode, and a gasket and a spring washer are arranged between the head of the adjusting bolt and one side of the outer wall of the fifth wedge block in a sleeved mode. The adjusting bolt is screwed clockwise to drive the wedge block V to slide on the outer wall of the guide rail, so that the limiting pin I of the sliding block III moves, the wedge block IV moves in a limited manner through the limiting hole II, the wedge block IV drives the wedge block III to enable the limiting pin II of the sliding block II to move, the synchronous movement of the wedge block II and the wedge block IV is realized, and the wedge block II and the wedge block IV are matched to quickly lock the module. The device practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chassis, in particular to a locking device with variable total length. Background Art

[0002] A variable-length locking device is a mechanical device used to install and secure modules within a chassis. Its overall length can be adjusted using structures such as retractable components, elastic links, or adjustable latches. It enables rapid installation and removal of modules within a chassis because it improves installation efficiency, adapts to chassis and module dimensions, and facilitates operation. It also enhances disassembly convenience, allowing for quick unlocking and minimizing damage. It also improves stability and shock resistance, providing reliable locking and a flexible, seismic-resistant design.

[0003] During use, existing modules in the chassis are usually fixed to the rack inside the chassis using a single bolt combined with a nut or a retaining ring. Since the use of bolts and nuts is not only unstable, but also the disassembly process is relatively cumbersome, which can easily lead to unstable module installation and causing it to fall off. Therefore, a locking device with a variable total length is proposed to solve the above problem. Utility Model Content

[0004] In order to remedy the above deficiencies, the present invention provides a locking device with a variable total length, aiming to improve the problems in the prior art of complex fixing methods and unstable installation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a locking device with variable total length, comprising a guide rail, a wedge block 1 is provided on one side of the outer wall of the guide rail, a cross bolt is installed between the wedge block 1 and the inside of the guide rail through a threaded groove, the outer wall of the guide rail is slidably connected with wedge blocks 2, 3, 4 and 5 arranged in sequence, an adjusting bolt is threadedly connected on one side of the inside of the guide rail, the outer wall of the adjusting bolt is penetrated and arranged in the inside of the wedge block 5, a gasket and a spring washer are sleeved between the head of the adjusting bolt and one side of the outer wall of the wedge block 5, the inner wall of the guide rail is slidably connected with sliders 1, 2 and 3 arranged in sequence.

[0006] Furthermore, a left-right symmetrical limit pin 1 is provided through the interior of the slider 3, and the outer walls of the two limit pins 1 are both slidably connected to one side of the interior of the guide rail.

[0007] Furthermore, a left-right symmetrical limit pin 2 is provided through the interior of the second slider, and the outer walls of the two limit pins 2 are both slidably connected to the middle side of the guide rail.

[0008] Furthermore, a left-right symmetrical limit pin three is provided through the interior of the slider one, and the outer walls of the two limit pins three are both slidably connected to the other side of the guide rail.

[0009] Further, the wedge five is internally connected with the left-right symmetrical positioning pins in sliding mode, and the adjusting bolt is rotationally connected to one side of the positioning pin.

[0010] Further, the wedge five is internally connected with the left-right symmetrical positioning pins in sliding mode, and the adjusting bolt is rotationally connected to one side of the positioning pin.

[0011] Further, the wedge five is internally connected with the left-right symmetrical positioning pins in sliding mode, and the adjusting bolt is rotationally connected to one side of the positioning pin.

[0012] Further, the wedge five is internally connected with the left-right symmetrical positioning pins in sliding mode, and the adjusting bolt is rotationally connected to one side of the positioning pin.

[0013] Further, the wedge five is internally connected with the left-right symmetrical positioning pins in sliding mode, and the adjusting bolt is rotationally connected to one side of the positioning pin.

[0014] Further, the wedge five is internally connected with the left-right symmetrical positioning pins in sliding mode, and the adjusting bolt is rotationally connected to one side of the positioning pin.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] 1. In the utility model, the wedge five is driven to slide on the outer wall of the guide rail by rotating the adjusting bolt clockwise, thereby driving the limiting pin one in the slider three to move, the limiting hole two is pressed and limited to move by the limiting pin one, the limiting pin two in the slider two is driven to move by the movement of the limiting pin two, the wedge two and the wedge four are synchronously moved, the wedge two and the wedge four are cooperated, the effect of quick locking module is realized, and the practicability of the device is improved.

[0017] 2. In the utility model, the wedge five is driven to slide on the outer wall of the guide rail by rotating the adjusting bolt counterclockwise, thereby driving the limiting pin one in the slider three to pull the wedge four to move downward, the wedge three is driven to move in the opposite direction on the outer wall of the guide rail by the movement of the limiting pin two, the wedge two and the wedge four are close to the outer wall of the guide rail by the movement of the wedge three, the wedge two and the wedge four are quickly reset, and the practicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic view of the locking device with total length change.

[0019] Figure 2 This is an exploded view of the locking device with a variable total length proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the four-part structure of the wedge block of the locking device with variable total length proposed by the present invention;

[0021] Figure 4 This is a schematic structural diagram of a portion of the limiting groove of the locking device with variable total length proposed by the present invention.

[0022] Legend:

[0023] 1. Guide rail; 2. Wedge 1; 3. Cross bolt; 4. Wedge 2; 5. Wedge 3; 6. Wedge 4; 7. Wedge 5; 8. Limit slot 1; 9. Limit hole 1; 10. Limit slot 2; 11. Slider 1; 12. Slider 2; 13. Slider 3; 14. Limit pin 1; 15. Limit pin 2; 16. Limit pin 3; 17. Positioning pin; 18. Gasket; 19. Spring washer; 20. Adjusting bolt; 21. Limit hole 2. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1 - Figure 4, the utility model provides an embodiment: a locking device with a variable total length, including a guide rail 1, which is the basic guiding component of the entire device, providing a stable path and support for the movement of other parts. A wedge 2 is provided on one side of the outer wall of the guide rail 1, and the wedge 2 can cooperate with other wedges to play a role. A cross bolt 3 is installed between the wedge 2 and the inside of the guide rail 1 through a threaded groove. The cross bolt 3 is used to fix the wedge 2 so that it maintains a stable position on the guide rail 1. The outer wall of the guide rail 1 is slidably connected with a wedge 2 4, a wedge 3 5, a wedge 4 6 and a wedge 5 7 arranged in sequence. These wedges can slide on the guide rail 1 and pass through each other. The position changes and cooperation between them change the length of the entire device to adapt to different locking requirements. An adjusting bolt 20 is threadedly connected to one side of the inner side of the guide rail 1. The adjusting bolt 20 is used to adjust the position of the wedge block 57, thereby indirectly adjusting the length of the entire device. The outer wall of the adjusting bolt 20 is set inside the wedge block 57. A gasket 18 and a spring washer 19 are set between the head of the adjusting bolt 20 and one side of the outer wall of the wedge block 57. The gasket 18 can disperse the pressure and protect the contact surface between the wedge block 57 and the adjusting bolt 20. The spring washer 19 can prevent the adjusting bolt 20 from loosening due to vibration and other reasons during use, and the inner wall of the guide rail 1 slides It is connected with slider 11, slider 2 12 and slider 3 13 arranged in sequence. The slider slides in the guide rail 1 and can play an auxiliary and stabilizing role in the process of changing the length of the device. The slider 3 13 is provided with a left-right symmetrical limit pin 14 inside. The outer walls of the two limit pins 14 are slidably connected to one side of the inner part of the guide rail 1. The limit pin 14 is used to limit the sliding range of the slider 3 13 in the guide rail 1 to ensure that it moves in the appropriate position. The slider 2 12 is provided with a left-right symmetrical limit pin 2 15 inside. The outer walls of the two limit pins 2 15 are slidably connected to the middle side of the inner part of the guide rail 1. The limit pin 2 15 is opposite to the slider 2 1 2 plays the same limiting role. The slider 11 is provided with a left-right symmetrical limit pin 3 16 inside. The outer walls of the two limit pins 3 16 are slidably connected to the other side of the guide rail 1. The limit pin 3 16 is used to limit the sliding range of the slider 11 so that the slider 11 can accurately slide in the guide rail 1. The wedge block 5 7 is slidably connected to the inside with a left-right symmetrical positioning pin 17. The positioning pin 17 can assist in the positioning and movement of the wedge block 5 7 on the guide rail 1. One side of the outer wall of the adjusting bolt 20 is rotatably connected to the outer wall of the positioning pin 17, so that the adjusting bolt 20 can more stably adjust the position of the wedge block 5 7 through the positioning pin 17 when rotating.

[0026] Reference Figure 1 - Figure 4The inside of the wedge block five 7 is provided with a limiting hole two 21 for the rotation of the right limiting pin one 14, the limiting hole two 21 provides a rotating space for the right limiting pin one 14, so that the movement of the sliding block three 13 can be reasonably guided and constrained through the rotation of the limiting pin one 14 in the limiting hole two 21, to ensure the coordination of the movement of the whole device, the inside of the wedge block two 4 is provided with a limiting slot one 8 for the sliding of the left limiting pin three 16, the limiting slot one 8 provides a sliding channel for the left limiting pin three 16, so that the movement of the sliding block one 11 can be realized through the sliding of the limiting pin three 16 in the limiting slot one 8, and the displacement of the sliding block one 11 in a certain direction can be limited, the inside of the wedge block three 5 is provided with a left and right symmetrical limiting hole one 9, the outer wall of the right limiting pin three 16 is provided in the inner wall of the left limiting hole one 9, and the outer wall of the left limiting pin two 15 is provided in the inner wall of the right limiting hole one 9, the limiting hole one 9 provides installation and movement space for the right limiting pin three 16 and the left limiting pin two 15, and on the other hand, through the penetrating arrangement, the movement of the sliding block one 11 and the sliding block two 12 is related to each other, to ensure the stable position relationship between different sliding blocks during the length change of the device, and to ensure the normal operation of the whole device, the inside of the wedge block four 6 is provided with a left and right symmetrical limiting slot two 10, the outer wall of the right limiting pin two 15 is slidingly connected to the inner wall of the left limiting slot two 10, and the outer wall of the left limiting pin one 14 is slidingly connected to the inner wall of the right limiting slot two 10, the limiting slot two 10 provides a sliding path for the right limiting pin two 15 and the left limiting pin one 14, so that the movement of the sliding block two 12 and the sliding block three 13 is coordinated through the sliding of the limiting pin in the limiting slot two 10, to ensure the orderly movement between the sliding blocks during the length change of the device, the wedge block one 2, the cross bolt 3, the wedge block two 4, the wedge block three 5, the wedge block four 6 and the wedge block five 7 are all slidingly connected, this sliding connection mode enables the relative movement between the wedge blocks, through the interaction between them, the total length of the whole locking device is changed to adapt to different use scenes and locking requirements, the guide rail 1, the wedge block one 2, the cross bolt 3, the wedge block two 4, the wedge block three 5, the wedge block four 6 and the wedge block five 7 are all made of aluminum alloy, the aluminum alloy has the advantages of light weight, high strength, corrosion resistance and the like, using aluminum alloy to make these parts can not only ensure the overall strength of the device, but also reduce the weight of the device, facilitate installation and use, and resist corrosion of external environmental factors to a certain extent, prolong the service life of the device.

[0027] Working principle: when the locking device needs to be used for locking operation, first of all, by clockwise rotating the adjusting bolt 20, the wedge block five 7 slides left on the outer wall of the guide rail 1, and then the effect of moving the internal limiting pin one 14 of the sliding block three 13 is realized, at this time, by the movement of the limiting pin one 14, the effect of moving the wedge block four 6 is realized, at this time, due to the extrusion of the wedge block five 7 and the wedge block three 5, the effect that the wedge block four 6 is limited to move while abutting against the outer wall of the module is realized, at this time, by the movement of the wedge block four 6, the effect of pushing the wedge block three 5 to move the internal limiting pin two 15 of the sliding block two 12 is realized, at this time, by the movement of the wedge block three 5, the effect that the wedge block two 4 and the wedge block four 6 are synchronously moved to lock the module and fix the effect is realized.

[0028] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A locking device with variable total length, comprising a guide rail (1), characterized in that: A wedge block 1 (2) is provided on one side of the outer wall of the guide rail (1), and a cross bolt (3) is installed between the wedge block 1 (2) and the inside of the guide rail (1) through a threaded groove. The outer wall of the guide rail (1) is slidably connected with a wedge block 2 (4), a wedge block 3 (5), a wedge block 4 (6) and a wedge block 5 (7) arranged in sequence. An adjusting bolt (20) is threadedly connected to one side of the inside of the guide rail (1). The outer wall of the adjusting bolt (20) is penetrated and arranged inside the wedge block 5 (7). A gasket (18) and a spring washer (19) are sleeved between the head of the adjusting bolt (20) and one side of the outer wall of the wedge block 5 (7). The inner wall of the guide rail (1) is slidably connected with a slider block 1 (11), a slider block 2 (12) and a slider block 3 (13) arranged in sequence.

2. The locking device with variable total length according to claim 1, characterized in that: A left-right symmetrical limit pin (14) is provided inside the slider (13), and the outer walls of the two limit pins (14) are both slidably connected to one side of the inside of the guide rail (1).

3. The locking device with variable total length according to claim 2, characterized in that: The interior of the second slider (12) is provided with a left-right symmetrical limit pin (15), and the outer walls of the two limit pins (15) are both slidably connected to the middle side of the interior of the guide rail (1).

4. The locking device with variable total length according to claim 3, characterized in that: The interior of the slider 1 (11) is provided with a left-right symmetrical limit pin 3 (16), and the outer walls of the two limit pins 3 (16) are both slidably connected to the other side of the interior of the guide rail (1).

5. The locking device with variable total length according to claim 4, characterized in that: The wedge block five (7) is internally slidably connected to a left-right symmetrical positioning pin (17), and one side of the outer wall of the adjusting bolt (20) is rotatably connected to one side of the outer wall of the positioning pin (17).

6. The locking device with variable total length according to claim 4, characterized in that: The wedge block five (7) is provided with a limiting hole two (21) for the right limiting pin one (14) to rotate, and the wedge block two (4) is provided with a limiting groove one (8) for the left limiting pin three (16) to slide.

7. The locking device with variable total length according to claim 4, characterized in that: The wedge block three (5) is provided with a left-right symmetrical limit hole one (9) therein, the outer wall of the limit pin three (16) on the right side is provided through the inner wall of the limit hole one (9) on the left side, and the outer wall of the limit pin two (15) on the left side is provided through the inner wall of the limit hole one (9) on the right side.

8. The locking device with variable total length according to claim 4, characterized in that: The wedge block four (6) is provided with a left-right symmetrical limit groove two (10), the outer wall of the limit pin two (15) on the right side is slidably connected to the inner wall of the limit groove two (10) on the left side, and the outer wall of the limit pin one (14) on the left side is slidably connected to the inner wall of the limit groove two (10) on the right side.

9. The locking device with variable total length according to claim 1, characterized in that: The wedge block 1 (2), the cross bolt (3), the wedge block 2 (4), the wedge block 3 (5), the wedge block 4 (6) and the wedge block 5 (7) are all connected in a sliding manner.

10. The locking device with variable total length according to claim 9, characterized in that: The guide rail (1), wedge block 1 (2), cross bolt (3), wedge block 2 (4), wedge block 3 (5), wedge block 4 (6) and wedge block 5 (7) are all made of aluminum alloy.

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