CN114876952A - Slide rail mechanism with locking device - Google Patents

Abstract

The invention discloses a slide rail mechanism with a locking device, wherein the inner part of an outer slide rail is provided with a cavity, an inner slide rail is arranged in the cavity of the outer slide rail in a sliding way, a slide block is arranged in the inner slide rail and forms relative sliding with the outer slide rail through the inner slide rail, the upper ends of two sides of the outer slide rail are provided with fixed blocks, a rotating shaft is arranged on the fixed blocks, locking units are arranged in grooves of the outer slide rail, an upper wedge block of each locking unit is wrapped through the fixed blocks, the upper wedge block of each locking unit is connected with a gear shaft, the gear shaft is connected with the rotating shaft through a gear rotating mechanism, the locking unit has a sliding state and a locking state, the outer slide rail and the inner slide rail can slide in the sliding state, and when the sliding rail is in a locking state, the outer sliding rail and the inner sliding rail are locked, and the rotating shaft enables the sliding rail to be in a sliding state or a locking state through the gear rotating mechanism and the locking unit. The invention has simple structure and no complex electric locking mechanism, and reduces functional components such as damping, spring and the like.

Description

A sliding rail mechanism with a locking device

technical field

The present invention relates to the technical field of slide rail structures, and more particularly, to a slide rail mechanism with a locking device.

Background technique

There are different units of components in the spacecraft, and these components are installed in different locations. When the equipment is in normal operation, these components are fastened to fixed supports such as cabinets and cabin ends. When the equipment fails and reaches the service life, astronauts need to carry out maintenance and replacement operations, and unreasonable operating space often has a bad impact on maintenance. Therefore, it is necessary to increase the connection mechanism to realize the space conversion between the normal working condition and the maintenance working condition.

The slide rail is a linear motion device that realizes rapid visualization of the internal space. It has a simple structure and convenient operation, and is widely used in daily life and industrial production. The main defect of the existing slide rails is that the slide rails cannot be kept in a locked state when they are pushed back, and there is a great potential safety hazard when the equipment runs at high speed. In recent years, there have been many slide rail structures with self-locking function for drawers, cabinets and other household items on the market, but most of them have complex structures and complex assemblies, and rely on mechanisms to achieve passive self-locking, cannot be actively locked, and have low reliability. , not suitable for aerospace equipment for maintenance needs.

The utility model patent with the application number of 201820617406.8 discloses an adjustable sliding rail locking mechanism in a power distribution automation monitoring terminal, which includes a movable slider and a fixed sliding rail. A T-row groove is opened inside the movable slider, and an electric The push rod and the limit clamping rod are provided with clamping grooves on the fixed sliding rail. The principle is that the electric push bar pushes the limit clamp rod through the inclined plane, so that the limit clamp rod is clamped into the clamping groove to realize the locking of the moving slider and the fixed sliding rail. The advantage of this scheme is that the mechanical structure is simple and easy to understand. But the disadvantage is that electric control is required, and the locking position is limited. The invention patent with the application number of 201911365083.3 discloses a synchronous slide rail integrated with a damping closing locking mechanism, including an external fixing seat, a sliding rail assembly arranged on the external fixing seat, and the sliding rail assembly includes an outer rail, a middle rail and When the inner rail approaches the end point through the sliding rail, the sliding rail continues to move slowly under the combined action of the tension spring and the damper until the sliding rail is completely locked. The sliding rail has many components and a complicated mechanism.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a slide rail mechanism with a locking device to overcome the defects existing in the prior art.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

A sliding rail mechanism with a locking device, comprising an outer sliding rail, a sliding block, an inner sliding rail, a gear shaft, a locking unit, a fixed block and a rotating shaft, the outer sliding rail has a cavity inside, and the inner sliding rail has a cavity. The sliding rail is slidably arranged in the cavity of the outer sliding rail, and the sliding block is arranged in the inner sliding rail and forms relative sliding with the outer sliding rail through the inner sliding rail. A fixed block is installed on the upper ends of both sides, the rotating shaft is installed on the fixed block, the locking unit is arranged in the groove of the outer slide rail, and the upper wedge of each locking unit is wrapped by the fixed block. The upper wedge of each locking unit is connected with a gear shaft, and the gear shaft is connected with the rotating shaft through a gear rotating mechanism. The locking unit has a sliding state and a locking state. In the sliding state, the outer slide rail is connected to the inner The slide rail is slidable, the outer slide rail and the inner slide rail are locked in a locked state, and the rotating shaft makes the slide rail in a sliding state or a locked state through a gear rotating mechanism and a locking unit.

Further, the locking unit includes two locking modules, each locking module includes an upper wedge and a lower wedge, the upper wedge is arranged in the groove at the end of the outer slide rail, the The fixed block wraps the upper wedge, the upper wedge is provided with an inner thread, one end of the gear shaft is connected with the inner thread on the upper wedge through the outer thread, and the lower wedge is connected to the inner slide rail. connected, the upper wedge surface of the upper wedge is matched with the lower wedge surface of the lower wedge.

Further, the gear rotation mechanism includes a large gear provided on the rotating shaft and a small gear provided on the gear shaft, and the large gear is meshed with the pinion.

Further, the upper ends of both sides of the outer slide rail are provided with openings, and the lower ends of the upper wedges are integral protruding parts, the length of the protruding part is less than the length of the opening, and the protruding part is The lower end surface of the part is a lower wedge surface, and the length of the upper wedge is equal to the opening.

Further, the upper end of the outer slide rail is also provided with a chute for the upper wedge block to slide.

Further, the rotating shaft includes a rotating shaft body, and one end of the rotating shaft body is provided with a rotating knob 803 .

Further, the bottom of the cavity of the outer slide rail is provided with a plurality of first threaded holes, and the outer slide rail is fixedly connected to the outer bracket through the first threaded holes.

Further, the inner slide rail is provided with a plurality of second threaded holes, and the inner slide rail is connected to the external bearing mechanism through the second threaded holes.

Compared with the prior art, the present invention has the advantages that the present invention has a simple structure, no complicated electric locking mechanism, and reduces functional components such as damping and springs. The locking and unlocking of the rail, the invention realizes the locking in the full stroke, and solves the defect that the existing slide rail can only be locked in a limited position. Its frequency of use is not high, but it needs to be highly reliable. The switch between the normal operation and maintenance of the equipment can be realized through a simple mechanical structure to ensure that the machine is completely locked during normal operation.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a plan view of a slide rail mechanism with a locking device of the present invention.

Figure 2 is a plan partial cross-sectional view of the slide rail mechanism with locking device of the present invention.

FIG. 3 is a schematic diagram of a partial three-dimensional structure of the middle and outer slide rails of the present invention.

FIG. 4 is a schematic plan view of the rotating shaft in the present invention.

FIG. 5 is a schematic plan view of the gear shaft in the present invention.

Outer slide rail 1, cavity 100, bolt mounting holes 101, slider mounting surface 102, lower wedge mounting base surface 103, upper wedge sliding surface 104, opening 105, chute 106, slider 2, inner slide 3 , fixed block 4, lower left wedge 5, upper left wedge 6, first gear shaft 7, rotating shaft 8, first gear 801, second gear 802, rotating knob 803, second gear shaft 9, third gear 901, Right-hand thread 902, upper right wedge 10, lower surface 1001 of upper right wedge, lower right wedge 11, upper surface 1101 of lower right wedge, lower surface 1002 of lower right wedge.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

1-5, the present embodiment discloses a slide rail mechanism with a locking device, including an outer slide rail 1, a slider 2, an inner slide rail 3, a gear shaft (ie, the first gear shaft 7 and the second gear shaft 9), the locking unit, the fixed block 4 and the rotating shaft 8, wherein the outer slide rail 1 has a cavity 100 inside, and the inner slide rail 3 is slidably arranged in the cavity of the outer slide rail 1 Inside, the sliding block 2 is arranged in the inner sliding rail 3 and forms relative sliding with the outer sliding rail 1 through the inner sliding rail 3. The upper ends of the two sides of the outer sliding rail 1 are installed with a fixed block 4, and the rotating shaft 8 is installed on the fixed block. 4, the locking unit is arranged in the groove of the outer slide rail 1, the upper wedge of each locking unit is wrapped by the fixing block 4, the upper wedge of each locking unit is connected with a gear shaft, and the gear shaft passes through The gear rotating mechanism is connected with the rotating shaft 8. The locking unit has a sliding state and a locking state. In the sliding state, the outer slide rail 1 and the inner slide rail 3 can slide, and in the locked state, the outer slide rail 1 can slide. Locked with the inner slide rail 3, the rotating shaft 8 makes the slide rail in a sliding state or a locked state through a gear rotation mechanism and a locking unit.

The locking unit includes two locking modules, each locking module includes an upper wedge block and a lower wedge block, the upper wedge block is arranged in the groove at the end of the outer slide rail, and the fixing block 4 The upper wedge is wrapped, and the upper wedge is provided with an inner thread, and one end of the gear shaft (the first gear shaft 7 and the second gear shaft 9) is connected to the upper wedge through the outer thread (for example, the right-hand thread 902 in FIG. The inner thread on the wedge is connected, the lower wedge is connected with the inner slide rail 3, and the upper wedge surface of the upper wedge is matched with the lower wedge surface of the lower wedge.

In this embodiment, openings 105 are provided at the upper ends of both sides of the outer slide rail 1 , and the lower ends of the upper wedges are integral protruding parts 10 . The length of the protruding parts 10 is less than the length of the openings 105 The lower end surface of the outlet portion 10 is a lower wedge surface, and the length of the upper wedge is equal to the opening 105 .

In this embodiment, the upper end of the outer slide rail 1 is further provided with a chute 106 for the upper wedge to slide, forming the upper wedge sliding surface 104 to facilitate the sliding of the upper wedge.

In this embodiment, the rotating shaft 8 includes a rotating shaft body, and one end of the rotating shaft body is provided with a rotating knob 803. Rotating the rotating knob 803 drives the gear shaft through the gear rotating mechanism to make the locking unit in a sliding state or locked state.

In this embodiment, the left locking module includes a lower left wedge 5 and an upper left wedge 6 , the locking module on the right includes an upper right wedge 8 and a lower right wedge 9 , and the inner screw connection of the upper left wedge 6 and the upper right wedge The inner thread of the block 8 is respectively connected with the left-handed thread of the first gear shaft 7 and the right-handed thread 902 of the second gear shaft 9, as shown in FIG. The lower surface 1001 of the wedge is matched with the upper surface 1101 of the lower right wedge, and the lower surface 1102 of the lower right wedge is connected with the inner slide rail 3 .

The locking scheme on one side is as follows: the rotational movement of the rotating shaft 8 is geared through the second gear 802 on the rotating shaft and the third gear 901 of the second gear shaft 9, and the power is transmitted to the second gear shaft 9. The rotational motion of the second gear shaft 9 transmits the thread to the upper right wedge 10, the upper right wedge 10 performs linear motion, and then the linear motion of the upper right wedge 10 makes the upper right wedge 10 press the lower right wedge 11, and the lower right wedge 11 The inner sliding rail 3 is locked together with the outer sliding rail 1 fixed on the cabin, so as to realize the locking of the entire system (eg, the carbon dioxide removal system).

The overall locking scheme is as follows: two fixing plates 4 are connected by bolts and fixed on the outer slide rail 1 , and the fixing block 4 is rotatably connected with the rotating shaft 8 . The rotational movement of the rotating shaft 8 is driven by two threads with different rotation directions, so that the upper right wedges 10 on both sides move in different directions, so that the lower right wedges 11 are compressed, and the force along the movement direction of the slide rail is also offset. .

The thread of the threaded hole in the upper left wedge block 6 is a left-hand thread, and the thread on the first gear shaft 7 is also a left-hand thread. The threads on the second gear shaft 9 are right-hand threads, and the threads of the threaded holes in the upper right wedge block 10 are right-hand threads.

In this embodiment, the bottom of the cavity 100 of the outer slide rail 1 is provided with a plurality of first threaded holes, and the outer slide rail 1 is fixedly connected to the external support through the first threaded holes.

In this embodiment, the inner slide rail 3 is provided with a plurality of second threaded holes, and the inner slide rail 3 is connected to an external bearing mechanism (eg, a cabin) through the second threaded holes.

When the present invention is in use, the rotation of the rotating shaft 8 by the astronaut drives the rotating shaft to mesh with the large and small gears on the gear shaft through the rotation of the rotating shaft 8, thereby transmitting the power to the gear shaft. The thread drive of the gear shaft drives the upper wedge to perform linear motion, so that the upper wedge squeezes the lower wedge, and the lower wedge compresses the inner slide rail, thereby realizing the locking of the slide rail. The locking and sliding of the inner slide rail and the outer slide rail are controlled by the rotation of the rotating shaft, and the switching between the sliding state and the locking state is realized. The sliding rail realizes active locking, overcomes the defect of limited position locking within the stroke range, has a simple structure, and can carry a large load.

The present invention has a simple structure, no complicated electric locking mechanism, and reduces functional components such as damping and springs. The present invention is easy to operate. The locking and unlocking of the slide rail can be realized only by twisting the rotating shaft, and the present invention realizes a full stroke. The inner locking solves the defect that the existing slide rail can only be locked in a limited position. The present invention is aimed at high-speed operation equipment such as aerospace and other maintenance requirements, and its use frequency is not high, but it needs to be highly reliable. The mechanical structure realizes the switching between the normal operation and maintenance of the equipment, and ensures that the machine is completely locked during normal operation. The present invention reduces the torque required by the astronaut during operation through gear transmission, and improves the rationality of the layout of the rotating shaft.

Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner can make various changes or modifications within the scope of the appended claims, as long as the protection scope described in the claims of the present invention is not exceeded, all should be within the protection scope of the present invention.

Claims (8)

1. A sliding rail mechanism with a locking device, characterized in that it comprises an outer sliding rail, a sliding block, an inner sliding rail, a gear shaft, a locking unit, a fixed block and a rotating shaft, and the outer sliding rail has a a cavity, the inner slide rail is slidably arranged in the cavity of the outer slide rail, and the slider is arranged in the inner slide rail and slides relative to the outer slide rail through the inner slide rail, The upper ends of the two sides of the outer slide rail are installed with fixed blocks, the rotating shaft is installed on the fixed blocks, the locking units are arranged in the grooves of the outer slide rails, and the upper wedges of each locking unit are Wrapped by a fixed block, the upper wedge of each locking unit is connected with a gear shaft, and the gear shaft is connected with the rotating shaft through a gear rotating mechanism. The locking unit has a sliding state and a locking state. The outer slide rail and the inner slide rail are slidable, and the outer slide rail and the inner slide rail are locked in a locked state, and the rotating shaft makes the slide rail in a sliding state or a locked state through a gear rotating mechanism and a locking unit. 2. The sliding rail mechanism with a locking device according to claim 1, wherein the locking unit comprises two locking modules, and each locking module comprises an upper wedge and a lower wedge, The upper wedge is arranged in the groove at the end of the outer slide rail, the fixing block wraps the upper wedge, the upper wedge is provided with an inner thread, and one end of the gear shaft is connected with the outer thread through the outer thread. The inner thread on the upper wedge is connected, the lower wedge is fitted with the inner slide rail, and the upper wedge surface of the upper wedge is matched with the lower wedge surface of the lower wedge. 3 . The sliding rail mechanism with locking device according to claim 1 , wherein the gear rotating mechanism comprises a large gear provided on the rotating shaft and a pinion set on the gear shaft. 4 . , the large gear meshes with the small gear. 4 . The sliding rail mechanism with locking device according to claim 2 , wherein the upper ends of both sides of the outer sliding rail are provided with openings, and the lower ends of the upper wedges are integrally protruding. 5 . The length of the protruding portion is smaller than the length of the opening, the lower end surface of the protruding portion is a lower wedge surface, and the length of the upper wedge is equal to the opening. 5 . The slide rail mechanism with locking device according to claim 1 , wherein the upper end of the outer slide rail is further provided with a chute for the upper wedge block to slide. 6 . 6 . The slide rail mechanism with a locking device according to claim 1 , wherein the rotating shaft comprises a rotating shaft body, and one end of the rotating shaft body is provided with a rotating knob. 7 . 7 . The sliding rail mechanism with locking device according to claim 1 , wherein the bottom of the cavity of the outer sliding rail is provided with a plurality of first threaded holes, and the outer sliding rail passes through the first threaded holes. 8 . The hole is fixedly connected with the external bracket. 8 . The sliding rail mechanism with locking device according to claim 1 , wherein the inner sliding rail is provided with a plurality of second threaded holes, and the inner sliding rail is connected to the outside through the second threaded holes. 9 . carrier.

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