CN111588203A

CN111588203A - Drawer pretightening force slide rail

Info

Publication number: CN111588203A
Application number: CN202010552779.3A
Authority: CN
Inventors: 徐锦状; 徐忠秋; 詹道华
Original assignee: Shanghai Jinzhuang Precision Mould Co ltd
Current assignee: Shanghai Jinzhuang Precision Mould Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2020-08-28

Abstract

A drawer pre-tightening force slide rail comprises an outer rail and a middle rail component. The outer rail includes a runner. The middle rail component comprises a sliding block, a propping piece and a pre-tightening spring. The slider includes the body, and the slip inserts the piece to and the storage tank. The accommodating groove is formed in the body and the sliding insertion block. The abutting piece is accommodated in the accommodating groove and comprises an abutting part and a fixing part. The pre-tightening spring is abutted against the abutting part and the accommodating groove so as to drive the abutting part of the abutting part to abut against the sliding groove. According to the drawer pretightening force slide rail, the pretightening spring is arranged between the abutting piece and the slide block, so that the abutting piece always abuts against the slide groove, the loss of a contact surface between the slide block and the outer rail due to friction can be compensated, the slide block can always tightly abut against the outer rail, and the purpose of eliminating a gap is achieved.

Description

Drawer pretightening force slide rail

Technical Field

The invention relates to the technical field of drawer slide rails, in particular to a drawer pre-tightening force slide rail.

Background

In the life of people, the places using the drawer slide rail are many, such as drawers, sliding doors and the like, and the products need to return to the original positions after being pulled open. Therefore, for some sliding type sliding tracks, the sliding surface of the sliding type sliding track is worn to a great extent during the sliding back and forth, especially after years of use, so that the sliding surface is worn to a great extent, thereby causing a gap, which causes the drawer to be deformed and even causes the drawer to be drawn unsmoothly. In addition, due to the manufacturing process, the assembled sliding rail may shake left and right when the drawer is pulled due to the tolerance accumulation, which may affect the use experience of the drawer.

Disclosure of Invention

Accordingly, the present invention provides a drawer preload slide that avoids the above-described problems.

A drawer pre-tightening force slide rail comprises an outer rail and a middle rail assembly arranged in the outer rail. The outer rail includes a runner. The middle rail assembly comprises a sliding block arranged in the sliding groove, at least two abutting pieces arranged on the sliding block, and a pre-tightening spring arranged between the abutting pieces and the sliding block. The sliding block comprises a body, two sliding insertion blocks and at least two accommodating grooves, wherein the two sliding insertion blocks are arranged on two sides of the body respectively, and the at least two accommodating grooves are used for accommodating the abutting piece. The outline of the sliding insertion block is an isosceles triangle in the sliding direction perpendicular to the sliding groove. The accommodating groove is formed in the body and the sliding insertion block. The propping piece is accommodated in the accommodating groove and comprises a propping part propping against the sliding groove and a fixing part arranged in the accommodating groove. The pre-tightening spring is abutted against the abutting part and the accommodating groove so as to drive the abutting part of the abutting part to abut against the sliding groove.

Furthermore, the sliding groove comprises an accommodating cavity and two guide grooves which are respectively arranged on two sides of the accommodating cavity, the guide grooves are symmetrically arranged on a section perpendicular to the sliding direction of the sliding groove, the outlines of the guide grooves are isosceles triangles, the sliding insertion block is inserted into the guide grooves, and the isosceles triangles of the guide grooves and the isosceles triangles of the sliding insertion block are inserted into the guide grooves.

Further, the straight lines where the heights of the isosceles triangles of the two guide grooves are located coincide.

Further, the body of the slider is accommodated in the accommodating cavity.

Furthermore, the accommodating groove comprises an accommodating cavity arranged on the body, a butt joint groove arranged on the sliding insertion block, and a clamping groove arranged on one side of the abutting joint groove facing the accommodating cavity.

Furthermore, the abutting portion is accommodated in the abutting groove, and the contour of the abutting portion on a section perpendicular to the sliding direction of the sliding groove is half of the height of the isosceles triangle.

Furthermore, the fixing part further comprises a semicircular groove, the accommodating cavity is provided with a semicircular groove, the pre-tightening spring is accommodated in a space formed by the two semicircular grooves, and the pre-tightening spring abuts against the abutting part and the accommodating cavity.

Furthermore, the fixed part is towards one side of top has a joint strip, and this joint strip is inserted and is established in the joint groove.

Furthermore, the abutting piece is clamped between the sliding block and the sliding groove of the outer rail so as to fix the relative position of the abutting piece.

Further, when the propping piece props against the guide groove, the propping piece is separated from the propping of the sliding insertion block

Compared with the prior art, the drawer pre-tightening force slide rail provided by the invention is provided with the abutting piece on the middle rail assembly, and the abutting piece abuts against the sliding groove of the outer rail. Meanwhile, a pre-tightening spring is arranged between the abutting piece and the sliding block, so that the abutting piece always abuts against the sliding groove, the loss of a contact surface between the sliding block and the outer rail due to friction can be compensated, the sliding block can always tightly abut against the outer rail, and the purpose of eliminating gaps is achieved.

Drawings

FIG. 1 is a schematic structural view of a drawer pre-tightening slide rail according to the present invention.

FIG. 2 is an exploded view of a center rail assembly of the drawer preload slide of FIG. 1.

FIG. 3 is a cross-sectional view of a center rail assembly of the drawer preload slide of FIG. 1

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to 3, which are schematic structural views of the drawer pre-tightening force slide rail provided by the present invention. The drawer preload slide includes an outer rail 10 and a center rail assembly 20 disposed within the outer rail 10. It is contemplated that the drawer preload slide may also include other functional modules, such as an inner rail, assembly screws, mounting assemblies, etc., which are well known to those skilled in the art and will not be described in detail herein.

The outer rail 10 includes an outer rail body 11, and a slide groove 12 provided on the outer rail body 11. The outer rail body 11 may be made of metal or nonmetal. The sliding chute 12 includes a strip-shaped accommodating cavity 121 and two guide grooves 122 respectively disposed at two sides of the accommodating cavity 121. The size of the accommodating cavity 121 can be set according to actual requirements, such as width and thickness. The guide grooves 122 are disposed on two sides of the accommodating cavity 121 and are symmetrically disposed, that is, the two guide grooves 122 use the middle surface of the accommodating cavity 121 as a symmetric surface. In a cross section perpendicular to the sliding direction of the chute 12, the outline of the guide groove 122 is an isosceles triangle. The straight lines of the heights of the isosceles triangles of the two guide grooves 122 are overlapped, and the straight lines of the heights of the isosceles triangles are perpendicular to the sliding direction of the sliding chute 12. By arranging the guide groove 122 to be an isosceles triangle, the contact area of the guide groove 122 can be increased, and thus the load can be increased, and the bearing capacity of the guide groove 112 can be improved.

The middle rail assembly 20 includes a sliding block 21 disposed in the sliding groove 12, at least two abutting members 22 disposed on the sliding block 21, and a pre-tightening spring 23 disposed between the abutting members 22 and the sliding block. The sliding block 21 is arranged in the sliding groove 12, so that the sliding block can slide along the sliding groove 12, and meanwhile, the sliding block 21 is also used for fixedly arranging an inner rail to drive the inner rail to slide. The sliding block 21 includes a body 211, two sliding insertion blocks 212 respectively disposed at two sides of the body 211, and at least two receiving grooves 213 for receiving the supporting member 22. The body 211 is used to provide the inner rail, and thus bolt holes may be provided thereon. The sliding inserts 212 are respectively disposed on two sides of the body 211 and symmetrically disposed, and specifically, the two sliding inserts 212 also use the middle surface of the accommodating cavity 121 as a symmetric surface. The contour line of the slide insert 212 is also an isosceles triangle in a cross section perpendicular to the sliding direction of the slide groove 12. Meanwhile, the isosceles triangle of the guide slot 122 is the same as the isosceles triangle of the sliding insert block 212, so that the sliding insert block 212 and the guide slot 122 can be mutually and stably combined, and the sliding insert block 212 can slide along the guide slot 122.

The receiving cavity 213 is disposed on the body 211 and the sliding block 212, and includes a receiving cavity 2131 disposed on the body 211, an abutting groove 2132 disposed on the sliding block 212, and a locking groove 2133 disposed on a side of the receiving cavity 2131 facing the abutting groove 2132. The accommodating cavity 2131 is disposed on the body 211, and is formed with a semicircular groove for accommodating and fixing the pre-tightening spring 23. The structure of the accommodating cavity 2131 may be set according to actual needs, and in this embodiment, the accommodating cavity 2131 is a square groove. The abutting groove 2132 is used for accommodating a part of the abutting piece 22, and is formed in the sliding insert block 212. In a cross section perpendicular to the sliding direction of the sliding groove 12, an area formed by a contour line of the abutting groove 2132 is half of that of the sliding block 212. The engaging groove 2133 is provided on a side of the accommodating cavity 2131 facing the abutting groove 2132, and is spaced apart from the abutting groove 2132.

The abutting member 22 includes an abutting portion 221 abutting against the sliding groove 12, and a fixing portion 222 connected to the abutting portion 221. The abutting portion 221 is accommodated in the abutting groove 2132, and on a cross section perpendicular to the sliding direction of the sliding groove 12, the contour line of the abutting portion 221 is a half of an isosceles triangle of the sliding insertion block 212, so that the abutting portion 221 and the other half of the sliding insertion block 212 corresponding to the abutting groove 2132 can be inserted into the guide groove 122 of the sliding groove 12. The fixing portion 222 is received in the receiving cavity 2131 and also includes a semicircular groove. The semicircular groove is used together with the semicircular groove of the housing chamber 2131 to house and fix the biasing spring 23. The fixing portion 222 further includes a clamping bar 223 disposed on a side facing the abutting portion 221. The clip strip 223 is inserted into the clip groove 2132. In assembly, the clamping bar 223 should be inserted into the clamping groove 2132, and then the other parts of the fixing portion 222 should be accommodated in the accommodating cavity 2131. The clamping strip 223 is spaced from the abutting portion 221, so that the relative position between the abutting member 22 and the sliding block 21 can be fixed. The abutting piece 22 is clamped between the sliding block 21 and the sliding groove 12 of the outer rail 10 to fix the relative position of the abutting piece 22.

In order to make the abutting member 22 have abutting force and pre-tightening force, when the abutting member 22 abuts against the guide groove 122, the abutting member 22 is disengaged from the sliding block 212, that is, the fixing portion 222 of the abutting member 22 and the top of the accommodating cavity 2131 are spaced apart from each other, so that the abutting member 22 abuts against the sliding groove 12 under the abutting force of the pre-tightening spring 23 along with the abrasion of the abutting member 22. Meanwhile, at any time, the abutting part 221 of the abutting part 22 is always abutted by the pre-tightening spring 23, so that pre-tightening force is exerted between the outer rail 10 and the sliding block 21.

The pre-tightening spring 23 is accommodated in a space formed by the two semicircular grooves and abuts against the abutting part 221 and the accommodating cavity 2131. The pre-tightening spring 23 may be a compression spring, so that a certain abutting force can be always given to the abutting member 22.

Compared with the prior art, the drawer pre-tightening force slide rail provided by the invention is characterized in that the middle rail component 20 is provided with the abutting piece 22, and the abutting piece 22 abuts against the sliding groove 12 of the outer rail 10. Meanwhile, a pre-tightening spring 23 is arranged between the abutting piece 22 and the sliding block 21, so that the abutting piece 22 always abuts against the sliding groove 12, loss of a contact surface between the sliding block 21 and the outer rail 10 due to friction can be compensated, the sliding block 21 can always tightly abut against the outer rail 10, and the purpose of eliminating a gap is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims

1. The utility model provides a drawer pretightning force slide rail which characterized in that: the drawer pretightening force slide rail comprises an outer rail and a middle rail assembly arranged in the outer rail, the outer rail comprises a slide groove, the middle rail assembly comprises a slide block arranged in the slide groove, at least two abutting pieces arranged on the slide block and a pretightening spring arranged between the abutting pieces and the slide block, the slide block comprises a body, two sliding insert blocks respectively arranged at two sides of the body and at least two accommodating grooves used for accommodating the abutting pieces, the outline of the sliding insert block in the sliding direction vertical to the slide groove is an isosceles triangle, the accommodating grooves are arranged on the body and the sliding insert blocks, the abutting pieces are accommodated in the accommodating grooves and comprise an abutting part abutting against the slide groove and a fixing part arranged in the accommodating grooves, the pre-tightening spring is abutted against the abutting part and the accommodating groove so as to drive the abutting part of the abutting part to abut against the sliding groove.

2. The drawer preload track of claim 1, wherein: the sliding groove comprises an accommodating cavity and two guide grooves which are respectively arranged on two sides of the accommodating cavity, the guide grooves are symmetrically arranged on a section perpendicular to the sliding direction of the sliding groove, the outlines of the guide grooves are isosceles triangles, the sliding insertion block is inserted in the guide grooves, and the isosceles triangles of the guide grooves and the isosceles triangles of the sliding insertion block are arranged.

3. The drawer preload track of claim 2, wherein: the straight lines where the heights of the isosceles triangles of the two guide grooves are located are overlapped.

4. The drawer preload track of claim 2, wherein: the body of the slider is accommodated in the accommodating cavity.

5. The drawer preload track of claim 1, wherein: the accommodating groove comprises an accommodating cavity arranged on the body, a butt joint groove arranged on the sliding insertion block and a clamping groove arranged on one side of the butt joint groove and facing the accommodating cavity.

6. The drawer preload track of claim 5, wherein: the abutting portion is accommodated in the abutting groove, and the contour of the abutting portion on the section perpendicular to the sliding direction of the sliding groove is half of the height of the isosceles triangle.

7. The drawer preload track of claim 5, wherein: the fixing part further comprises a semicircular groove, the accommodating cavity is provided with the semicircular groove, the pre-tightening spring is accommodated in a space formed by the two semicircular grooves, and the pre-tightening spring abuts against the abutting part and the accommodating cavity.

8. The drawer preload track of claim 2, wherein: one side of the fixing part, which faces the abutting part, is provided with a clamping strip, and the clamping strip is inserted into the clamping groove.

9. The drawer preload track of claim 1, wherein: the abutting piece is clamped between the sliding block and the sliding groove of the outer rail to fix the relative position of the abutting piece.

10. The drawer preload track of claim 1, wherein: when the propping piece props against the guide groove, the propping piece is separated from the propping of the sliding insertion block.