Worm locking device

Abstract

The utility model discloses a worm locking device which comprises a worm transmission part and two locking strips, the worm transmission part at least comprises a driving part, a transmission rod and a driven rod, and the two ends of the transmission rod are in transmission connection with the driving part and the driven rod in a gear meshing mode respectively; each locking strip is provided with a transmission rod and a driven rod; the locking strip further comprises a connecting rod and a rotary pushing block, the connecting rod is connected with the installation shaft, the rotary pushing block is connected to the connecting rod, the rotary pushing block is provided with a rotating part and an eccentric protruding part acting on the pushing part, and the rotating part is matched with the driven rod in a worm and gear transmission mode. The multiple locking strips are locked or unlocked at the same time in a worm and gear matching mode, mounting and dismounting are convenient, meanwhile, the self-locking characteristic of the worm gear and the worm is utilized, locking parts of the locking strips cannot return, locking is stable, and loosening is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the field of aviation chassis, in particular to a worm locking device. Background Art

[0002] In an aviation chassis, a module box refers to a smaller independent working unit composed of various circuit boards or electronic equipment and metal or non-metallic structural parts. The unit can independently complete a certain work or task.

[0003] The locking strip refers to a locking device installed on the module box, which can fix the module box on the chassis and realize the function of quickly disassembling and assembling the module box from the chassis.

[0004] Generally, module boxes are installed and locked using conventional locking strips, but different module boxes have different structures and different requirements for locking strips; especially when the module box requires multiple locking strips and has high requirements for anti-loosening, if a single locking strip of the transmission is used to complete it, each locking strip needs to be disassembled and assembled separately, which is relatively cumbersome. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a worm locking device, which realizes the simultaneous locking or unlocking of multiple locking strips through the cooperation of a worm gear and a worm gear. It is easy to install and disassemble. At the same time, by utilizing the self-locking characteristics of the worm gear and the worm gear, the locking part of the locking strip will not retreat, and the locking is stable and not easy to loosen.

[0006] Specifically, a worm locking device comprises a locking strip, the locking strip comprises a mounting shaft, a locking portion and a pushing portion, the locking portion and the pushing portion are mounted on the mounting shaft, the locking portion and the pushing portion are matched through an inclined surface, the locking portion can slide out of the mounting shaft as a whole, and at least one portion of the pushing portion including the inclined surface can slide along the axis of the mounting shaft;

[0007] The worm locking device also includes a worm transmission part, to which at least one locking strip is connected;

[0008] The worm gear transmission part at least comprises a driving part, a transmission rod and a driven rod, and the two ends of the transmission rod are respectively connected to the driving part and the driven rod by gear meshing; each locking strip is equipped with a transmission rod and a driven rod;

[0009] The locking strip also includes a connecting rod and a rotating push block, wherein the connecting rod is connected to the mounting shaft, and the rotating push block is connected to the connecting rod, wherein the rotating push block has a rotating part and an eccentric protrusion acting on the pushing part, wherein the rotating part cooperates with the driven rod through a worm gear transmission method.

[0010] Optionally, the worm gear transmission part is connected to two mutually parallel locking strips, and the worm gear transmission part is provided with two transmission rods and two driven rods; the driving part is connected to the two transmission rods through a bevel gear transmission, and the corresponding transmission rod and the corresponding driven rod are meshed and transmitted through a bevel gear transmission.

[0011] Optionally, the driving part includes a rotating wheel, on which a driving bevel gear is fixedly mounted, and the driving bevel gear is meshed with small bevel gears on the two transmission rods.

[0012] Optionally, the rotating wheel is installed with a preloaded spring.

[0013] Optionally, the driven rod is provided with a worm part, and the rotating part is provided with a worm wheel part adapted to the worm part.

[0014] Optionally, a cushion block is provided between the rotating pushing block and the pushing portion, and an elastic component is installed on the connecting rod and acts on the cushion block.

[0015] Optionally, the pushing part includes a first pushing block and a second pushing block, both of which use inclined surfaces to cooperate with the locking part, the first pushing block is slidably installed on the mounting shaft and is located close to one end of the connecting rod, the second pushing block is installed on the mounting shaft and away from the connecting rod, and an elastic member acting on the second push block and installed on the mounting shaft is provided on the outer side of the second push block.

[0016] Optionally, the inclined surface connecting the first push block and the locking portion is symmetrically arranged with respect to the inclined surface connecting the second push block and the locking portion.

[0017] Optionally, a cover body mounted on the mounting shaft is provided on the periphery of the elastic member.

[0018] Optionally, the cover body is mounted on the end of the mounting shaft by a bolt, the elastic member is mounted on the bolt, one end of the elastic member acts on the end face of the bolt, and the other end acts on the second push block.

[0019] Optionally, the elastic member is a spring or a spring sheet or a spring sheet group formed by several spring sheets.

[0020] The utility model has the following advantages:

[0021] The utility model realizes locking or unlocking of multiple locking strips at the same time by means of a worm gear and a worm gear, and is easy to install and disassemble. At the same time, the self-locking characteristics of the worm gear and the worm gear are utilized, so that the locking part of the locking strip will not retreat, and has excellent anti-loosening performance. Even if it is used in an extremely complex vibration environment, it can still maintain its excellent anti-loosening performance.

[0022] At the same time, the utility model realizes compact structure and miniaturization through bevel gear transmission. Under the condition of achieving the locking goal, the integration is high, and it will not occupy too much module box structure size, and can accommodate more working components. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0024] Figure 2 It is a three-dimensional schematic diagram of another state of the utility model;

[0025] Figure 3 It is a transmission schematic diagram of the locking strip of the utility model;

[0026] Figure 4 It is a structural schematic diagram of the locking strip of the utility model;

[0027] Figure 5 This is the front view of the locking strip of the utility model after the rotating push block is removed;

[0028] Figure 6 yes Figure 5 Sectional view of AA in the middle;

[0029] Figure 7 It is a schematic diagram of the utility model installed in the module box;

[0030] In the figure: 100, worm gear transmission part; 101, cover body; 102, base body; 103, active bevel gear; 104, transmission rod; 105, small bevel gear; 106, driven bevel gear; 107, driven rod; 108, rotating part; 109, rotating wheel; 110, rotating wheel; 200, locking strip; 201, locking part; 202, mounting shaft; 203, connecting rod; 204, elastic component; 205, cover body; 206, second push block; 207, first push block; 208, rotating push block; 209, cushion block; 210, elastic component; 211, bolt 300, module. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0032] In this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0033] As described in the background technology, module boxes are all installed and locked using conventional locking strips, but different module boxes have different structures and different requirements for locking strips; especially when the module box requires multiple locking strips and has high requirements for anti-loosening, if a single locking strip of the transmission is used to complete it, each locking strip needs to be disassembled and assembled separately, which is relatively cumbersome.

[0034] Based on the above problems, this embodiment discloses a worm locking device, such as Figure 1 and Figure 2 As shown, the locking device includes a worm gear transmission part 100, and two locking strips 200 arranged in parallel are connected to the worm gear transmission part 100; the locking strip 200 includes a mounting shaft 202, a locking part 201 and a pushing part, the locking part 201 and the pushing part are mounted on the mounting shaft 202, the locking part 201 and the pushing part are matched by inclined surfaces, the locking part 201 can slide out of the mounting shaft as a whole, and at least one part of the pushing part including the inclined surface can slide along the axis of the mounting shaft;

[0035] The worm gear transmission part at least includes a driving part, a transmission rod 104 and a driven rod 107. The two ends of the transmission rod 104 are respectively connected to the driving part and the driven rod 107 by gear meshing. Each locking strip 200 is equipped with a transmission rod 104 and a driven rod 107.

[0036] The locking strip 200 further includes a connecting rod 203 and a rotating push block 208, wherein the connecting rod 203 is connected to the mounting shaft 202, and the rotating push block 208 is connected to the connecting rod 203, and the rotating push block has a rotating portion 108 and an eccentric convex portion acting on the pushing portion, wherein the rotating portion cooperates with the driven rod 107 through a worm gear transmission mode, such as Figure 3 As shown, the driven rod 107 has a worm part, and the rotating part has a worm wheel part, and the transmission is achieved by meshing the worm part with the worm wheel part.

[0037] The above technical features can realize the cooperation of worm gear and worm to realize the simultaneous locking or unlocking of multiple locking strips, which is convenient for installation and disassembly. At the same time, by utilizing the self-locking characteristics of the worm gear and worm gear, the locking part of the locking strip will not retreat, and it has excellent anti-loosening performance. Even when used in extremely complex vibration environments, it can still maintain its excellent anti-loosening performance.

[0038] In order to achieve a compact structure, such as Figure 2 As shown, in one embodiment, the driving part is connected to the two transmission rods by bevel gear transmission, and the corresponding transmission rods are meshed with the corresponding driven rods by bevel gear transmission. Exemplarily, small bevel gears 105 are respectively provided at both ends of the transmission rod 104, the small bevel gear at one end meshes with the driven bevel gear 106 installed on the driven rod 107, and the small bevel gear at the other end meshes with the driving bevel gear 103 installed on the driving part, and the driven rod 107 has a worm part.

[0039] In order to improve the stability and protection of the worm gear, Figure 1 and Figure 2 As shown, the worm gear transmission unit also includes a base 102 and a cover 101 installed on the upper part, wherein the transmission rod, the driven rod and the gear end of the driving unit are installed between the cover and the collective; the driving unit includes a rotating wheel 109, and the rotating wheel 109 is fixedly installed with an active bevel gear 103, and the active bevel gear 103 is meshed with the small bevel gears 105 on the two transmission rods 104. The above technical features can improve the compactness of the structure through the bevel gear meshing transmission, and the integration is higher.

[0040] In order to make the active bevel gear 103 and the small bevel gear 105 mesh more compactly and not easy to fall off, Figure 2 As shown, in one embodiment, the rotating wheel is installed with a preload spring 110, which provides thrust to make the movable bevel gear 103 and the small bevel gear 105 cooperate better and reduce the risk of separation.

[0041] For example, Figure 2 and Figure 3 As shown, in one embodiment, the driven rod is provided with a worm portion, and the rotating portion is provided with a worm wheel portion adapted to the worm portion.

[0042] In order to improve the eccentric convex part to better act on the pushing part, such as Figure 3 and Figure 6 As shown, in one embodiment, a cushion block 209 is provided between the rotating push block 208 and the push portion, and an elastic component 204 is installed on the connecting rod and acts on the cushion block, and the elastic component is preferably a spring.

[0043] For example, Figure 3-Figure 6As shown, the pushing part includes a first push block 207 and a second push block 206, both of which are matched with the locking part 201 by an inclined surface, the first push block 207 is installed on the installation shaft 202 and is located near one end of the connecting rod, the second push block 206 is installed on the installation shaft 202 and away from the connecting rod, and an elastic member 210 is provided on the outer side of the second push block 206, which acts on the second push block 206 and is installed on the installation shaft. The cushion block 209 is located between the eccentric convex part and the first push block 207. The inclined surface connecting the first push block and the locking part is symmetrically arranged with the inclined surface connecting the second push block and the locking part. A cover body 205 installed on the installation shaft is provided on the periphery of the elastic member. The cover body 205 is installed on the end of the installation shaft 202 by a bolt 211, and the elastic member is installed on the bolt, one end of the elastic member acts on the end face of the bolt, and the other end acts on the second push block. Preferably, the elastic member is a spring or a spring sheet or a spring sheet group formed by a plurality of spring sheets. The above technical features can improve the locking performance of the locking strip, and the provision of the elastic member can also improve the anti-loosening effect of the locking strip.

[0044] When the worm locking device described in this embodiment is locked, the staff rotates the rotating wheel 109 to drive the active bevel gear 103 to rotate, and the active bevel gear then drives the transmission rod to rotate through the bevel gear meshing transmission. After the transmission rod rotates, it drives the driven rod to rotate through the bevel gear meshing transmission. The worm part on the driven rod drives the worm wheel part of the rotating part, and drives the rotating push block to rotate through the worm gear meshing transmission. The eccentric protrusion of the rotating push block contacts the first push block, pushing the first push block to move. Under the action of the first push block and the second push block, the locking part extends to achieve locking. When unlocking, the staff can rotate the rotating wheel in the opposite direction. The unlocking movement process is similar to the locking movement process; Figure 7 As shown, the worm locking device is a schematic diagram of the cooperation with the module 300.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A worm locking device, comprising a locking strip, the locking strip comprising a mounting shaft, a locking portion and a pushing portion, the locking portion and the pushing portion being mounted on the mounting shaft, the locking portion and the pushing portion being matched by an inclined surface, the locking portion being able to slide outward of the mounting shaft as a whole, and at least one portion of the pushing portion including the inclined surface being able to slide along the axis of the mounting shaft; characterized in that: The worm locking device also includes a worm transmission part, to which at least one locking strip is connected; The worm gear transmission part at least comprises a driving part, a transmission rod and a driven rod, and the two ends of the transmission rod are respectively connected to the driving part and the driven rod by gear meshing; each locking strip is equipped with a transmission rod and a driven rod; The locking strip also includes a connecting rod and a rotating push block, wherein the connecting rod is connected to the mounting shaft, and the rotating push block is connected to the connecting rod, wherein the rotating push block has a rotating part and an eccentric protrusion acting on the pushing part, wherein the rotating part cooperates with the driven rod through a worm gear transmission method.

2. A worm locking device according to claim 1, characterized in that: The worm gear transmission part is connected to two mutually parallel locking strips, and the worm gear transmission part is provided with two transmission rods and two driven rods; the driving part is connected to the two transmission rods through a bevel gear transmission method, and the corresponding transmission rods are meshed with the corresponding driven rods through a bevel gear transmission method.

3. A worm locking device according to claim 2, characterized in that: The driving part comprises a rotating wheel, on which a driving bevel gear is fixedly mounted, and the driving bevel gear is meshed with small bevel gears on the two transmission rods.

4. A worm locking device according to claim 3, characterized in that: The rotating wheel is provided with a preload spring.

5. A worm locking device according to any one of claims 1 to 4, characterized in that: The driven rod is provided with a worm part, and the rotating part is provided with a worm wheel part adapted to the worm part.

6. A worm locking device according to claim 1, characterized in that: A cushion block is arranged between the rotating pushing block and the pushing portion, and an elastic component is installed on the connecting rod and acts on the cushion block.

7. A worm locking device according to claim 1, characterized in that: The pushing part includes a first pushing block and a second pushing block, both of which use inclined surfaces to cooperate with the locking part, the first pushing block is slidably installed on the mounting shaft and is located at one end close to the connecting rod, the second pushing block is installed on the mounting shaft and away from the connecting rod, and an elastic member acting on the second pushing block and installed on the mounting shaft is provided on the outer side of the second pushing block.

8. A worm locking device according to claim 7, characterized in that: The inclined surface where the first push block and the locking portion are connected is symmetrically arranged with respect to the inclined surface where the second push block and the locking portion are connected.

9. A worm locking device according to claim 7, characterized in that: A cover body installed on the installation shaft is arranged on the periphery of the elastic member.

10. A worm locking device according to claim 7, characterized in that: The elastic member is a spring or a spring sheet or a spring sheet group formed by a plurality of spring sheets.

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