CN107269693B

CN107269693B - Screwless linear sliding rail

Info

Publication number: CN107269693B
Application number: CN201610215204.6A
Authority: CN
Inventors: 邱永绅; 陶仕晋
Original assignee: Hiwin Technologies Corp
Current assignee: Hiwin Technologies Corp
Priority date: 2016-04-08
Filing date: 2016-04-08
Publication date: 2020-03-17
Anticipated expiration: 2036-04-08
Also published as: CN107269693A

Abstract

The invention relates to a screwless linear slide rail, which comprises a rail bar, a slide block, a backflow component and a fixing piece, wherein the slide block, the backflow component and the fixing piece are fixed by a clamping structure and mutually positioned, so that the components can be mutually clamped and fixed without screws, and the strength of the backflow component can be enhanced by the design of a reinforcing sheet.

Description

Screwless linear sliding rail

Technical Field

The present invention relates to linear guide rails, and more particularly, to a screwless linear guide rail.

Background

A conventional linear ball-point sliding rail, as shown in fig. 7, includes a rail 1, a slider 2B, an end cap 8, a cover plate 9, a rolling body 5 and a wiping blade 4B, and the end cap 8, the cover plate 9 and the wiping blade 4B are locked on the slider 2B by screws 10, the rail 1 and the slider 2B are respectively provided with a fixing hole 12 and a screw hole 26B, the fixing hole 12 is used for fixing the rail 1 on a mechanism, and the screw hole 26B is used for connecting the slider 2B and a workpiece, which are not labeled, to each other; the rail bar 1 and the sliding block 2B are both provided with ball grooves, and the rolling bodies 5 are arranged between the ball grooves of the sliding block 2B and the ball grooves of the sliding rail 1 to roll circularly, so that the friction resistance generated when the sliding block 2B moves relatively on the sliding rail 1 is smaller. Two ends of the sliding block 2B are respectively provided with an end cover 8 to enable the rolling body 5 to turn, when the sliding block 2B moves on the sliding rail 1, the rolling body 5 enters the return hole 27B of the sliding block 2B from the ball groove of the sliding block 2B and the sliding rail 1 through the end cover 8, and then enters the end cover 8 at the other end from the return hole 27B to return to the ball groove of the sliding block 2B and the sliding rail 1, so that the sliding block 2B can move infinitely. In addition, the scraping and brushing sheets 4B are arranged on the outer sides of end covers 8 at two sides of the sliding block 2B, so that sundries on the sliding rail 1 are prevented from entering a bead groove of the sliding rail 1 and the sliding block 2B; and the cover plate 9 is plugged in the end cover 8 to ensure that the rotation path of the rolling body 5 is smooth, so that the phenomenon of bead extrusion is avoided.

At present, linear ball sliding rails are widely used in precision machinery and instruments, so the requirement of the linear ball sliding rails tends to be precise and small, but the smaller the size of the linear ball sliding rails is, the smaller the volume of the sliding block is, the smaller the size of the screw is, the more difficult the screw and the screw hole are to be processed when the size of the screw is small to a certain degree, and the higher the cost of assembling parts with the screw and the longer the assembly time tend to be. In view of the foregoing, there is a need for improved refinement in the prior art.

Disclosure of Invention

In view of the above problems, the main object of the present invention is to: a linear guide rail for fixing accessories without screws is developed.

In order to achieve the above purpose, the solution of the invention is:

a screwless linear slide, comprising: a rail bar extending in a long strip shape in one direction, defining the extending direction as an axial direction, and rolling grooves are respectively arranged on two sides of the axial direction of the rail bar; a slide block is an n-shaped body, two ends of the n-shaped body are respectively provided with a rolling groove opposite to the rolling groove, the rolling groove and the rolling groove form a load path, an upper bottom surface is arranged between the two end parts, two end surfaces of the slide block in the axial direction are respectively convexly provided with two extending blocks which are arranged at intervals, each extending block is provided with a clamping groove, and the slide block is provided with a fourth positioning part; the backflow component is provided with a third positioning part opposite to the fourth positioning part, the third positioning part and the fourth positioning part are mutually clamped in a concave-convex matching structure, so that the backflow component is positioned on the sliding block, the backflow component is respectively provided with an end surface in the axial direction, the end surfaces are oppositely connected with the inner surface of the clamping groove, the end surfaces are provided with at least one first positioning part, the backflow component is provided with two backflow channels respectively connected with the two load paths, and the load paths and the backflow channels form a circulation channel; the connecting part and the positioning pieces are both in plate shapes, the thickness of the two positioning pieces is smaller than the width of the clamping groove, the connecting part is in a bent arc shape under the condition of no external force, the distance length of the upper end parts of the two positioning pieces is larger than that of the lower end parts of the two positioning pieces, the connecting part is arranged on the upper bottom surface in a leaning mode, the two positioning pieces are respectively arranged on two end surfaces of the backflow component in a leaning mode, the upper end parts of the two positioning pieces are inserted into the clamping groove, the positioning pieces are provided with at least one second positioning part corresponding to the first positioning part, and the first positioning part and the second positioning part are mutually clamped in a concave-convex matched structure, so that the fixing part can limit the axial direction freedom degree of the backflow component.

Furthermore, the backflow component consists of two backflow pieces, the shapes of the two backflow pieces are ㄈ characters, and ㄈ -shaped two end parts of the two backflow pieces are mutually butted to form a square shape; the slider is further provided with a groove at both ends of the n shape, and the groove provides the ㄈ -shaped ends of the reflux piece for accommodating.

Furthermore, the reflow module further comprises two reinforcing pieces, wherein the two reinforcing pieces are ㄩ -shaped, the two ends of the ㄩ -shaped reinforcing piece are respectively provided with a fifth positioning part, and the fifth positioning part and the second positioning part are mutually clamped in a concave-convex matching structure, so that the reinforcing pieces can be fixed on the bottom surface of the reflow module.

The invention can mutually clamp and fix all the components without screws by virtue of the clamping design of the sliding block, the backflow component and the fixing piece, and the strength of the backflow component can be further enhanced by the design of the reinforcing piece.

Drawings

FIG. 1 is a system diagram of a screwless linear slide according to the present invention;

FIG. 2A is a system diagram of a slider, a return member and a fixing member of the screwless linear guide according to the present invention;

FIG. 2B is a system diagram of a slider and a reflow element of the screwless linear guide according to the present invention;

FIG. 3 is a combination view of the screwless linear guide of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a perspective view of a reinforcing plate of the screwless linear slide rail according to the present invention;

FIG. 6 is a combination view of the reinforcing plate of the screwless linear slide rail of the present invention mounted on the slider;

fig. 7 is a partial cross-sectional view of a prior art linear ball ramp.

[ notation ] to show

The prior art is as follows:

1 rail 2B slider

4B scraping brush piece 5 rolling body

8 end cover 9 cover plate

10 screw 26B screw hole

12 fixing hole 27B backflow hole

The invention comprises the following steps:

x-axis direction 1 rail

11 rolling groove 2 slide block

21 rolling groove and 22 groove

23 extending block 231 slot

2311 bottom surface of inner surface 24

25 end of the fourth positioning portion 26

Reflux component of reflux component A3

30 end surface 31 first positioning part

32 return channel 33 third positioning part

34 bottom surface 35 end

4 fastener 41 attachment

42 locating piece 421 second locating part

422 upper end 423 lower end

5 distance length between rolling bodies L1 and L2

7 reinforcing sheet 71 fifth positioning portion.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

Referring to fig. 1 to 4, the present invention is a screwless linear slide rail, including: a rail 1 extending in a long strip shape in one direction, defining the extending direction as an axial direction X, the rail 1 having rolling grooves 11 on both sides of the axial direction X; a slide block 2 is a n-shaped body, two ends of the n-shaped body are respectively provided with a rolling groove 21 opposite to the rolling groove 11, the rolling groove 11 and the rolling groove 21 form a load path, an upper bottom surface 24 is arranged between the two end parts 26, two end surfaces of the slide block 2 in the axial direction X are respectively convexly provided with two extending blocks 23 which are arranged at intervals, each extending block 23 is provided with a clamping groove 231, the slide block 2 is provided with a fourth positioning part 25, and the slide block 2 is further provided with a groove 22 at the two end parts 26 of the n-shaped body; a reflow assembly a is composed of two reflow elements 3, the two reflow elements 3 are ㄈ -shaped, two ends 35 of ㄈ -shaped ends of the reflow elements 3 are butted with each other, so that the reflow assembly a is square-shaped, the groove 22 provides accommodation for the two ends 35 of the reflow element 3, the reflow element 3 is provided with a third positioning portion 33 corresponding to the fourth positioning portion 25, the third positioning portion 33 and the fourth positioning portion 25 are engaged with each other in a concave-convex fit structure, in this embodiment, the fourth positioning portion 25 is a hole, the third positioning portion 33 is a convex column, so that the reflow assembly a is positioned on the slider 2, the reflow assembly a respectively has an end face 30 in the axial direction X, the end face 30 is engaged with an inner face 2311 of the card slot 231, as shown in fig. 2A, or the end face 30 is protruded from the inner face 2311, as shown in fig. 2B, and the end face 30 has at least one first positioning portion 31, and the reflow assembly a has two reflow channels 32 respectively engaged with the two load paths, the load path and the return channel 32 form a circulation channel; a fixing member 4, which is composed of a connecting portion 41 and two positioning pieces 42 respectively connected to two ends of the connecting portion 41, wherein the connecting portion 41 and the positioning pieces 42 are both in a plate shape, and the thickness of the two positioning pieces 42 is smaller than the width of the slot 231, the connecting portion 41 is in a curved arc shape under the condition of no external force, so that the distance length L1 between the upper end portions 422 of the two positioning pieces 42 is greater than the distance length L2 between the lower end portions 423, such that the ability of the fixing member 4 to fix the reflow assembly a can be enhanced, as shown in fig. 2A, the connecting portion 41 is close to the upper bottom surface 24, the two positioning pieces 42 are respectively close to the two end surfaces 30 of the reflow assembly a, and the upper end portions 422 of the two positioning pieces 42 are inserted into the slot 231, the positioning piece 42 has at least one second positioning portion 421 corresponding to the first positioning portion 31, and the second positioning portion 421 is close to the lower end portion 423 in this embodiment, the first positioning portion 31 and the second positioning portion 421 are engaged with each other by a concave-convex fit structure, in this embodiment, the first positioning portion 31 is a protrusion, and the second positioning portion 421 is a recess, so that the fixing member 4 can limit the degree of freedom of the reflow assembly a in the axial direction X.

Referring to fig. 5 and 6, in order to enhance the strength and safety of the whole linear slide rail, two reinforcing pieces 7 are additionally arranged as shown in fig. 5, the reinforcing piece 7 is shaped like a ㄩ, two ends of the ㄩ shape are respectively provided with a fifth positioning portion 71, the fifth positioning portion 71 and the second positioning portion 421 are mutually engaged in a concave-convex fit structure, in this embodiment, the fifth positioning portion 71 is a convex block, and the second positioning portion 421 is a concave hole, in this embodiment, in order to avoid the complication of the structure of the element, the engaging object of the fifth positioning portion 71 and the first positioning portion 31 are both shared as the second positioning portion 421, so that the reinforcing piece 7 can be fixed on the bottom surface 34 of the backflow assembly a.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A screwless linear slide, comprising: a rail bar extending in a long strip shape towards one direction, wherein the extending direction is defined as an axial direction, and rolling grooves are respectively arranged on two sides of the axial direction of the rail bar; the slide block is an n-shaped body, two sides of the axial direction of the n-shaped body are respectively provided with a rolling groove corresponding to the rolling groove, the rolling groove and the rolling grooves form a load path, an upper bottom surface is arranged between the two sides of the axial direction of the n-shaped body, two end surfaces of the axial direction of the slide block are respectively convexly provided with two extending blocks which are arranged at intervals, each extending block is provided with a clamping groove, and the slide block is provided with a fourth positioning part; the backflow component is provided with a third positioning part opposite to the fourth positioning part, the third positioning part and the fourth positioning part are mutually clamped in a concave-convex matching structure, so that the backflow component is positioned on the sliding block, the backflow component is provided with an end surface in the axial direction, the end surface is oppositely connected with the inner surface of the clamping groove, the end surface is provided with at least one first positioning part, the backflow component is provided with two backflow channels respectively connected with the two load paths, and the load paths and the backflow channels form a circulation channel; a fixing piece, it is made up of a connecting portion and two locating plates respectively connected to both ends of the axial direction of the connecting portion, the connecting portion and the locating plate are both plate-shaped, and the thickness of the two locating plates is smaller than the width of the slot, the connecting portion is curved under the condition of no external force, the distance length of the upper end of the two locating plates is larger than the distance length of the lower end, the connecting portion is near to the upper bottom surface, the two locating plates are near to the end surfaces of the two axial directions of the backflow component, and the upper end of the two locating plates is inserted in the slot, the locating plate has at least one second locating portion corresponding to the first locating portion, the first locating portion and the second locating portion are mutually clamped by a concave-convex matched structure, so that the fixing piece can limit the axial direction freedom degree of the backflow component.

2. The screwless linear guide of claim 1, wherein: the backflow component consists of two backflow pieces, the shapes of the two backflow pieces are ㄈ characters, and ends of ㄈ type two-axis direction extension of the two backflow pieces are mutually butted to form a square shape; the two sides of the slide block in the reverse U-shaped axial direction are respectively provided with a groove which is used for accommodating the ㄈ -shaped two-axial-direction extending end parts of the two backflow pieces.

3. The screwless linear guide of claim 1, wherein: the reinforced assembly comprises two reinforced sheets, wherein the two reinforced sheets are ㄩ -shaped, the two ends of the ㄩ -shaped reinforced sheet are respectively provided with a fifth positioning part, and the fifth positioning part and the second positioning part are mutually clamped in a concave-convex matching structure, so that the reinforced sheets can be fixed on the bottom surface of the backflow assembly.