CN113425103A

CN113425103A - Three-section type sliding rail with self-locking structure

Info

Publication number: CN113425103A
Application number: CN202110610943.6A
Authority: CN
Inventors: 赵长洋; 李德胜; 覃卓杰; 马奇; 黄俊杰; 常项开
Original assignee: Hubei Sanjiang Aerospace Wanfeng Technology Development Co Ltd
Current assignee: Hubei Sanjiang Aerospace Wanfeng Technology Development Co Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-09-24
Anticipated expiration: 2041-06-01
Also published as: CN113425103B

Abstract

The invention discloses a three-section type sliding rail with a self-locking structure. The self-locking function component comprises a fixed block and a self-locking mechanism, the self-locking mechanism comprises a rotary groove seat, a rotating shaft, a compression spring and a rotary clamping cap, a transverse through hole is reserved on the rotary groove seat, the axis of the rotary groove seat extends along the left-right direction, the left end of the rotary groove seat extends into and is fixed in the through hole of the fixed block, and a U-shaped clamping groove is formed in the right end face of the rotary groove seat; the rotating shaft is movably arranged in the through hole of the rotating groove seat in a penetrating way, the left side of the rotating shaft is provided with a limiting boss, and the right end of the rotating shaft is fixedly connected with the left end surface of the rotating clamping cap; the compression spring is sleeved on the rotating shaft, the left end of the compression spring is abutted against the limiting boss of the rotating shaft, and the right end of the compression spring is fixed in the through hole of the rotating groove seat; the left end face of the rotary clamping cap is provided with a first boss matched with the U-shaped clamping groove of the rotary groove seat. The self-locking mechanism has the characteristics of simple structure and high reliability, and can effectively realize the self-locking of the three-section type slide rail.

Description

Three-section type sliding rail with self-locking structure

Technical Field

The invention belongs to the field of engineering mechanical equipment, and particularly relates to a three-section type sliding rail with a self-locking structure.

Background

The sliding rail is also called as a guide rail and a slideway, and refers to a connecting part which is fixed on a cabinet body of the furniture and is used for a drawer or a cabinet plate of the furniture to come in and go out movably. The slide rail is suitable for connecting the drawers of wooden and steel drawers of cabinets, furniture, official document cabinets, bathroom cabinets and other furniture. The use of the slide rail can conveniently and quickly open and close the drawer, and labor can be greatly saved.

The slide rail can be divided into a light-load slide rail, a medium-load slide rail and a heavy-load slide rail according to different load bearing, and the use scenes of the slide rail are different. The drawer can be divided into two-section type sliding rails and three-section type sliding rails according to different numbers of sections, the two-section type sliding rails can partially draw out the drawer, and the three-section type sliding rails can completely draw out the drawer, so that the drawer is more convenient to use than the two-section type sliding rails. Three-section type slide rail will generally set up self-locking mechanism to can take place the problem of derail inefficacy in the open position.

At present, aiming at the self-locking problem of the three-section sliding rail, a fastening screw is usually arranged on a drawer panel, so that the three-section sliding rail is limited and self-locked. However, in some cases, for example, when the space is limited and a limiting mechanism cannot be arranged on a drawer panel or a slide rail bearing object, the traditional three-section slide rail without the self-locking function has limitations; when the fastening screw is loosened, the self-locking reliability can be reduced; and fastening screws need to be detached during unlocking, so that the use convenience is reduced.

Disclosure of Invention

Aiming at the defects or improvement requirements of the prior art, the invention provides the three-section type sliding rail with the self-locking structure, which is not only suitable for different use scenes, but also improves the reliability and convenience of self-locking.

In order to achieve the above object, according to one aspect of the present invention, there is provided a three-section sliding rail with a self-locking structure, comprising an outer rail, an inner rail, a sliding bar and a self-locking functional assembly, wherein the outer rail and the inner rail are both provided with a longitudinal sliding groove, the inner rail is slidably mounted in the sliding groove of the outer rail, and the sliding bar is slidably mounted in the sliding groove of the inner rail;

the self-locking functional component comprises a fixed block and a self-locking mechanism;

the fixed block is provided with a through hole which is arranged along the transverse direction of the guide rail, the fixed block is fixedly arranged on the outer side of the guide rail and is positioned at one end of the guide rail, and the through hole is positioned in the guide rail, namely a three-section type slide rail with a self-locking structure;

the fixing block is provided with a through hole arranged along the transverse direction of the guide rail, the fixing block is fixedly arranged on the outer side of the outer guide rail and is positioned at one end of the outer guide rail, the through hole is positioned outside the end face of the outer guide rail, and the center line of the through hole is intersected with the center line of the sliding strip.

The self-locking mechanism comprises a rotary groove seat, a rotating shaft, a compression spring and a rotary clamping cap, wherein a transverse through hole is reserved in the rotary groove seat, the axis of the rotary groove seat extends in the left-right direction, the left end of the rotary groove seat extends into and is fixed in the through hole of the fixed block, and a U-shaped clamping groove is formed in the right end face of the rotary groove seat.

The rotating shaft is movably arranged in the through hole of the rotating groove seat in a penetrating manner, a limiting boss is arranged on the left side of the rotating shaft, and the right end of the rotating shaft is fixedly connected with the left end face of the rotating clamping cap; the compression spring is sleeved on the rotating shaft, the left end of the compression spring is abutted against the limiting boss of the rotating shaft, and the right end of the compression spring is fixed on the inner wall of the through hole of the rotating groove seat, so that the compression spring is in a compressed state; and a first boss matched with the U-shaped clamping groove of the rotary groove seat is arranged on the left end face of the rotary clamping cap.

Preferably, the first boss of the rotary clamping cap is a square boss.

Preferably, the top ends of the protruding portions on two sides of the U-shaped clamping groove of the rotary groove seat are respectively provided with a groove, and the first boss of the rotary clamping cap is provided with a second boss matched with the groove of the rotary groove seat.

Preferably, the second boss of the rotary snap cap is a triangular boss.

Preferably, the rotary groove seat is fixedly connected with the fixed block through threads.

Preferably, the rotating shaft and the rotating clamping cap are fixedly connected through a pin.

Preferably, the rotary slot seat is fixed on the fixing block by a fastening nut.

Preferably, the side surface of the rotary clamping cap is a cylindrical surface.

Preferably, the cylindrical surface of the rotary clamping cap is provided with uneven lines for preventing slipping.

Preferably, the fixing block is fixedly connected with the guide rail through a fastening screw.

In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:

(1) according to the three-section sliding rail with the self-locking structure, the self-locking functional assembly is fixed on the outer side of the guide rail and is not influenced by the installation space, the extension and retraction of the rotating shaft are controlled under the action of the compression spring, the rotating shaft is further limited through the matching of the U-shaped clamping groove and the boss, the positioning is more accurate, and the self-locking reliability is improved while the application range of the three-section sliding rail is expanded.

(2) According to the three-section sliding rail with the self-locking structure, when the rotating shaft is in a retraction state, the rotating shaft is limited through the matching of the triangular boss and the triangular groove, the unlocking operation is convenient, and the reliability is high.

(3) According to the three-section sliding rail with the self-locking structure, the rotary groove seat is in threaded connection with the fixed block, and the rotary shaft is connected with the rotary clamping cap through the pin, so that the self-locking functional assembly is rapidly disassembled and assembled.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the self-locking state of the present invention;

FIG. 4 is a schematic view of the unlocked state of the present invention;

FIG. 5 is a schematic view of the self-locking feature of the present invention;

fig. 6 is a schematic view of the self-locking mechanism of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to 6, the invention provides a three-section sliding rail with a self-locking structure, which comprises an outer guide rail 1, an inner guide rail 2, a sliding strip 3 and a self-locking functional assembly 4. The outer guide rail 1 is fixed on the drawer cabinet body to play a role in supporting and fixing; the inner guide rail 2 is used for installing the sliding strip 3, providing fixed support for the sliding strip 3, and the sliding strip 3 is directly fixed on the side face of the drawer.

The outer guide rail 1 is a part directly fixed to the drawer cabinet body, thereby providing support for the inner guide rail 2, the slide bar 3 and the self-locking functional component 4. The outer guide rail 1 is provided with a longitudinal sliding groove for installing the inner guide rail 2, and the telescopic range of the three-section type sliding rail is prolonged by increasing the inner guide rail 2. The longitudinal sliding groove arranged in the outer guide rail 1 has guiding and fixing functions, and the inner guide rail 2 is arranged behind the sliding groove of the outer guide rail 1 and can do telescopic motion along the longitudinal direction.

The inner rail 2 is slidably mounted in a sliding groove of the outer rail 1, and the inner rail 1 is provided with a longitudinal sliding groove for mounting the sliding strip 3. In other words, the inner rail 2 can slide freely in the longitudinal direction of the outer rail 1, and the inner rail 2 is also provided with a sliding groove for mounting the sliding bar 3, and the protruding length of the three-section sliding rail is further extended through the inner rail 2. The longitudinal sliding groove arranged in the inner guide rail 2 has guiding and fixing functions, and the sliding strip 3 is installed behind the sliding groove of the outer guide rail 1 and can do telescopic motion along the longitudinal direction.

One side of the sliding strip 3 is slidably arranged in the inner guide rail 1, and the other side of the sliding strip is fixed on the drawer side plate, so that the drawer can freely move in the guide rail along the longitudinal direction. That is, the slide bar 3 can freely slide in the inner rail 2, and the slide bar 3 is fixed to the drawer side plate, so that the drawer can freely move in the longitudinal direction of the inner slide groove 2. The outer rail 1 is a fixed part, while the inner rail and the slide move with the opening and closing of the drawer, thereby being able to play a role of bearing the weight of the drawer and guiding the entrance and exit of the drawer. Further, a screw mounting hole is provided on the slide bar 3 for mounting the slide bar 3 on the drawer side plate.

The self-locking functional assembly 4 is a self-locking part of a three-section sliding rail, and the self-locking functional assembly 4 comprises a self-locking mechanism 41 and a fixed block 42. The self-locking mechanism 41 comprises a rotary slot seat 411, a rotating shaft 412, a compression spring 413, a rotary clamping cap 414 and a fastening nut 415. A through hole is formed in the axis of the rotary slot seat 411, a fixing hole is reserved in the side wall of the through hole, an external thread is arranged at one end of the rotary slot seat 411, a U-shaped clamping slot is formed in the other end of the rotary slot seat, and a triangular groove is formed in each of the top ends of the protruding portions on the two sides of the U-shaped clamping slot; the through hole of the rotary slot seat 411 is used to guide the rotary shaft 412, and the fixing hole left therein is used to provide a fixing support for the compression spring 413. The rotating shaft 412 is cylindrical, one end of the rotating shaft is provided with a limiting boss, and a pin mounting hole is reserved at the radial position of the other end of the rotating shaft. The limit boss end of the rotating shaft 412 limits the compression spring 413 on one hand, and directly limits the displacement of the slide bar 3 on the other hand, thereby playing a self-locking role. One end of the compression spring 413 is provided with a mechanical hook for fixing one end of the compression spring 413. Rotatory card cap 414 one end is the face of cylinder, and leaves unevenness's line on the face of cylinder, and the other end sets up two square bosss, sets up a triangle boss respectively at the top of two square bosss to the middle radial position of rotatory card cap 414 is provided with the pinhole, and middle axial position is provided with the mounting hole of pivot 412, so that pivot 412 is connected with rotatory card cap 414 through the pin. In other words, a boss for limiting and matching, a mounting hole and a pin hole for mounting the rotating shaft 412 are reserved at one end of the rotating clamp cap 414, and an anti-slip side surface is arranged at the side surface of the other end, so that the rotating clamp cap 414 can be rotated conveniently, and the rotating shaft 412 can be driven to rotate. A through hole is left in the fixing block 42 in the lateral direction of the outer rail 1, and an internal thread is provided in the through hole, so that the rotary slot housing 411 is fixed to the fixing block 42.

The screw ends of the rotary slot seats 411 extend into the through holes of the fixed block 42 and are connected to each other by screw threads. Further, the rotary slot holder 411 is coupled to an external thread of the rotary slot holder 411 by a fastening nut 415, thereby fixing the rotary slot holder 411 to the fixing block 42. The rotating shaft 412 penetrates through the through hole of the rotating slot seat 411, the compression spring 413 is sleeved on the rotating shaft 412, one end of the compression spring 413 abuts against the limiting boss of the rotating shaft 412, and the mechanical hook at the other end is located in the fixing hole of the side wall of the through hole of the rotating slot seat 411, so that the compression spring 413 is in a compressed state. One end of the rotating shaft 412 with a mounting hole for a pin is fixedly connected with the rotating snap cap 414 through a pin, and the U-shaped snap groove end of the rotating groove seat 411 is arranged opposite to the boss end of the rotating snap cap 414 so as to be matched with the boss end. That is, the rotation shaft 412 is controlled in its extended or retracted state by rotating the cap 414, and the automatic engagement of the rotation shaft 412 is controlled by the compression spring 413 in a compressed state. The fixing block 42 is fixed to the outer side of the outer guide rail 1 by fastening screws, and the center line of the through hole of the fixing block 42 intersects with the center line of the slide bar 3, so that the rotating shaft 412 penetrating through the through hole of the fixing block 42 plays a role in limiting. In other words, the extension line of the through hole on the fixing block 42 intersects with the extension line of the slide bar 3, and the through hole is completely located outside the end surface of the outer guide rail 1, so that it can be ensured that the rotating shaft 412 is located in front of the traveling position of the slide bar 3 after the rotating shaft 412 passes through the through hole of the fixing block 42, and the slide bar 3 can be limited by the protruding rotating shaft 412.

When the self-locking mechanism 41 is in a self-locking state, the square boss of the rotary clamping cap 414 is embedded into the U-shaped clamping groove of the rotary slot seat 411, and the rotating shaft 412 passes through the through hole of the fixing block 42, so that the longitudinal movement of the slide bar 3 can be limited, and a self-locking effect is achieved. In the process that the self-locking mechanism 41 is adjusted from the self-locking state to the unlocking state, the rotating clamping cap 414 is pulled out in the direction away from the fixed block 42, the triangular boss of the rotating clamping cap 414 is embedded into the triangular groove of the rotating groove seat 411 after rotating 90 degrees, the rotating shaft 412 is retracted into the through hole of the fixed block 42 from the state of extending out of the through hole of the fixed block 42, and the self-locking mechanism is in the unlocking state at the moment.

In other words, the self-locking of the self-locking mechanism 41 can be realized by the cooperation of the square boss of the rotary clamping cap 414 and the U-shaped clamping groove of the rotary groove seat 411; the unlocking of the self-locking mechanism 41 can be realized through the triangular boss of the rotary clamping cap 414 and the triangular groove of the rotary slot seat 411. The self-locking and unlocking state of the self-locking mechanism 41 can be switched by pulling the rotary locking cap 414 in a direction away from the fixed block and then rotating the rotary locking cap 414.

According to the three-section sliding rail with the self-locking structure, the locking device is simple in structure, small in occupied space and convenient to operate and install, and accurate positioning and reliable limiting effects can be achieved through the groove bosses.

It is to be understood that the foregoing are many different embodiments or examples of the different features of the present embodiments. Specific examples of components and arrangements are described above to simplify the illustrative embodiments. These are, of course, merely examples and are not intended to limit the embodiments, and for example, device dimensions are not limited to the ranges or values disclosed, but may depend on processing conditions and/or desired properties of the device.

Moreover, the formation of a first feature over or on a second feature in the description that follows may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features may be formed interposing the first and second features, such that the first and second features may not be in direct contact, although the various features may be drawn arbitrarily to varying proportions for simplicity and clarity of illustration.

Spatially relative terms, such as "under," "below," "lower," "above," "upper," and the like, may be used herein to describe one element or feature's relationship to another element or feature(s) as illustrated in the figures.

These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be oriented in different ways (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A three-section sliding rail with a self-locking structure is characterized by comprising an outer guide rail (1), an inner guide rail (2), a sliding strip (3) and a self-locking functional assembly (4), wherein longitudinal sliding grooves are formed in the outer guide rail (1) and the inner guide rail (2), the inner guide rail (2) is slidably mounted in the sliding groove of the outer guide rail (1), and the sliding strip (3) is slidably mounted in the sliding groove of the inner guide rail (2);

the self-locking functional component (4) comprises a fixed block (42) and a self-locking mechanism (41);

the fixing block (42) is provided with a through hole arranged along the transverse direction of the outer guide rail (1), the fixing block (42) is fixedly arranged on the outer side of the outer guide rail (1) and is positioned at one end of the outer guide rail (1), the through hole is positioned outside the end face of the outer guide rail (1) and the center line of the through hole is intersected with the center line of the slide bar (3);

the self-locking mechanism (41) comprises a rotary groove seat (411), a rotating shaft (412), a compression spring (413) and a rotary clamping cap (414), a transverse through hole is reserved in the rotary groove seat (411), the axis of the rotary groove seat (411) extends along the left-right direction, the left end of the rotary groove seat extends into and is fixed in the through hole of the fixed block (42), and a U-shaped clamping groove is formed in the right end face of the rotary groove seat (411);

the rotating shaft (412) is movably arranged in a through hole of the rotating groove seat (411) in a penetrating mode, a limiting boss is arranged on the left side of the rotating shaft (412), and the right end of the rotating shaft (412) is fixedly connected with the left end face of the rotating clamping cap (414); the compression spring (413) is sleeved on the rotating shaft (412), the left end of the compression spring (413) abuts against the limiting boss of the rotating shaft (412), and the right end of the compression spring (413) is fixed on the inner wall of the through hole of the rotating groove seat (411) so that the compression spring (413) is in a compressed state;

the left end face of the rotary clamping cap (414) is provided with a first boss matched with the U-shaped clamping groove of the rotary groove seat (411).

2. The three-section sliding rail with the self-locking structure is characterized in that the first boss of the rotary clamping cap (411) is a square boss.

3. The three-section sliding rail with the self-locking structure is characterized in that a groove is formed in the top end of each of the protruding portions on two sides of the U-shaped clamping groove of the rotary groove seat (411), and a second boss matched with the groove of the rotary groove seat (411) is arranged on the first boss of the rotary clamping cap (414).

4. The three-section sliding rail with the self-locking structure according to claim 3, wherein the second boss of the rotary clamping cap (414) is a triangular boss.

5. The three-section sliding rail with the self-locking structure is characterized in that the rotating groove seat (411) is fixedly connected with the fixed block (42) through threads according to the claim 1.

6. The three-section sliding rail with the self-locking structure according to claim 1, wherein the rotating shaft (412) and the rotating clamping cap (414) are fixedly connected through a pin.

7. The three-section sliding rail with the self-locking structure according to claim 1, wherein the rotating slot seat (411) is fixed on the fixing block (42) through a fastening nut (415).

8. The three-section sliding rail with the self-locking structure is characterized in that the side surface of the rotary clamping cap (414) is a cylindrical surface.

9. The three-section sliding rail with the self-locking structure is characterized in that the cylindrical surface of the rotary clamping cap (414) is provided with uneven lines for skid resistance.

10. The three-section sliding rail with the self-locking structure is characterized in that the fixing block (42) is fixedly connected with the outer guide rail (1) through a fastening screw.