A connection device used in three-section rail

Abstract

The utility model discloses a connecting device applied to a three-section rail, and relates to the technical field of furniture parts. The connecting device is used to connect the upper rail and the middle rail in the three-section rail; the connecting device includes a connecting piece for connecting with the upper rail, and a plurality of special-shaped claws respectively arranged on opposite sides of the connecting piece, and a spacing is provided between the special-shaped claw on one side of the connecting piece and the special-shaped claw on the other side to form a receiving gap relative to the middle rail, and the special-shaped claw is used to clamp the middle rail so that the connecting piece is slidably connected to the middle rail; wherein, a spacing portion is provided between each adjacent two special-shaped claws in the plurality of special-shaped claws, and the spacing size between each spacing portion is equal. Through the spacing portion, the weight of the entire connecting device can be greatly reduced, and at the same time, the clamping strength of the special-shaped claw and the middle rail can be guaranteed by limiting the equal spacing size between the spacing portions, so as to ensure stability.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture parts, in particular to a connecting device used in a three-section rail. Background Art

[0002] The slide rail includes a two-stage rail, a three-stage rail, etc. In the prior art, in order to realize multi-stage sliding of the three-stage rail, an additional middle rail needs to be arranged between the upper and lower rails.

[0003] In the prior art, the connection between the upper rail and the middle rail is usually made by using a solid connector, one end of which is connected to the upper rail and the other end is slidably connected to the middle rail to ensure the sliding connection between the upper rail and the middle rail.

[0004] Although the solid connector can ensure the stability of the connection between the upper and middle rails, the solid connector will increase the overall weight of the three-section rail, which is not conducive to the overall lightweight of the three-section rail and affects the overall service life of the three-section rail to a certain extent. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a connecting device used in a three-section rail to solve the technical problem that the existing solid connecting parts in the background technology will increase the weight of the three-section rail as a whole, which is not conducive to the lightweight of the three-section rail as a whole and affects the service life of the three-section rail as a whole to a certain extent.

[0006] The utility model provides a connecting device used in a three-section rail, wherein the connecting device is used to connect an upper rail and a middle rail in the three-section rail;

[0007] The connecting device comprises a connecting piece for connecting with the upper rail, and a plurality of special-shaped claws respectively arranged on opposite sides of the connecting piece, wherein a gap is arranged between the special-shaped claw on one side of the connecting piece and the special-shaped claw on the other side to form an accommodation gap opposite to the middle rail, and the special-shaped claw is used to engage with the middle rail so that the connecting piece is slidably connected to the middle rail;

[0008] Among the plurality of special-shaped claws, a spacing portion is provided between each adjacent two of the special-shaped claws, and the spacing sizes between each of the spacing portions are equal.

[0009] Further, the connecting member includes a first connecting portion, a second connecting portion and a transition connecting portion provided between the first connecting portion and the second connecting portion;

[0010] The cross-sectional dimension of the first connecting portion is greater than the cross-sectional dimension of the second connecting portion, and the length dimension of the second connecting portion is greater than the length dimension of the first connecting portion.

[0011] Furthermore, a plurality of through holes are provided on the first connecting portion along the length direction of the first connecting portion.

[0012] Furthermore, among the plurality of through holes, a portion of the through holes has a larger aperture than that of another portion of the through holes.

[0013] Furthermore, at least one supporting beam is provided between each two adjacent through holes.

[0014] Further, the connecting device comprises a plurality of first special-shaped claws and a plurality of second special-shaped claws;

[0015] A plurality of the first special-shaped claws are arranged on one side of the first connecting portion, and a plurality of the second special-shaped claws are arranged on a side of the second connecting portion opposite to the first connecting portion;

[0016] A first spacing portion is provided between each two adjacent first special-shaped claws, and a second spacing portion is provided between each two adjacent second special-shaped claws. The spacing size of the first spacing portion is equal to the spacing size of the second spacing portion.

[0017] Further, a plurality of first special-shaped claws are provided at the end of the first connecting portion, and a plurality of second special-shaped claws are provided at the end of the second connecting portion;

[0018] Wherein, each of the first special-shaped clamping claws has at least one second special-shaped clamping claw arranged opposite thereto.

[0019] Furthermore, arc-shaped grooves are provided on opposite sides of each adjacent pair of the first special-shaped claws and on opposite sides of each adjacent pair of the second special-shaped claws.

[0020] Furthermore, the first special-shaped clamping claw is fixedly connected to the first connecting portion, and the second special-shaped clamping claw is fixedly connected to the second connecting portion.

[0021] Furthermore, the end of each of the first special-shaped claws close to the middle rail is a curved surface, and the end of each of the second special-shaped claws close to the middle rail is a curved surface.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] In the connecting device applied to the three-section rail provided by the utility model, the side wall of the middle rail is engaged by a plurality of special-shaped claws, so that the upper rail and the middle rail can be slidably connected, and a spacing portion is provided between each adjacent two special-shaped claws among the plurality of special-shaped claws, so that the weight of the entire connecting device can be greatly reduced, and at the same time, the equal spacing size between the spacing portions is utilized to ensure the engagement strength of the special-shaped claws and the middle rail to ensure stability, thereby solving the technical problem in the prior art that the solid connecting piece will increase the weight of the entire three-section rail, which is not conducive to the lightweight of the entire three-section rail and affects the service life of the entire three-section rail to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A reference diagram of a connection device used in a three-section rail according to an embodiment of the utility model;

[0025] Figure 2 A perspective view of a connection device applied to a three-section rail according to an embodiment of the utility model;

[0026] Figure 3 This is a stereoscopic view from another perspective of a connecting device applied to a three-section rail according to an embodiment of the utility model.

[0027] In the figure: 100, connecting device; 110, connecting member; 111, first connecting portion; 112, second connecting portion; 113, transition connecting portion; 120, first special-shaped claw; 121, first spacing portion; 130, second special-shaped claw; 131, second spacing portion; 140, through hole; 150, supporting beam; 160, arc-shaped groove; 200, upper rail; 300, middle rail. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] See also Figures 1 to 3 , shown is a connecting device used in a three-section rail in one embodiment of the utility model, and the connecting device 100 is used to connect the upper rail 200 and the middle rail 300 in the three-section rail.

[0032] The connecting device 100 includes a connecting member 110 for connecting with the upper rail 200, and a plurality of special-shaped claws respectively arranged on opposite sides of the connecting member 110, a gap is arranged between the special-shaped claws on one side of the connecting member 110 and the special-shaped claws on the other side to form an accommodation gap opposite to the middle rail 300, and the special-shaped claws are used to engage with the middle rail 300 so that the connecting member 110 is slidably connected to the middle rail 300;

[0033] Among them, a spacing portion is provided between each adjacent two of the plurality of special-shaped clamping claws, and the spacing sizes between each spacing portion are equal.

[0034] Specifically, in this embodiment, the side wall of the middle rail 300 is engaged by the special-shaped claw, so that the special-shaped claw can slide on the middle rail 300, and at the same time, combined with the connection between the connecting piece 110 and the upper rail 200, the connecting piece 110 drives the upper rail 200 to slide relative to the middle rail 300. It should be noted that the special-shaped claw can fit with the curved outer wall of the middle rail 300. In some preferred embodiments, the special-shaped claw may have a curved portion that fits with the curved outer wall of the middle rail 300.

[0035] In addition, in the present embodiment, a spacer is provided between each two adjacent special-shaped claws among the plurality of special-shaped claws, so that the overall weight of the connecting device 100 can be greatly reduced. At the same time, by limiting the equal spacing sizes between the spacers, the clamping strength of the special-shaped claws and the middle rail 300 can be guaranteed to ensure stability, thereby solving the technical problem in the prior art that the solid connecting piece 110 will increase the overall weight of the three-section rail, which is not conducive to the overall lightweight of the three-section rail and affects the overall service life of the three-section rail to a certain extent.

[0036] Furthermore, in some other preferred embodiments, the connector 110 includes a first connector 111, a second connector 112 and a transition connector 113 provided between the first connector 111 and the second connector 112, wherein the cross-sectional dimension of the first connector 111 is greater than the cross-sectional dimension of the second connector 112, the length dimension of the second connector 112 is greater than the length dimension of the first connector 111, and a plurality of through holes 140 are provided on the first connector 111 along the length direction of the first connector 111, the aperture of a portion of the plurality of through holes 140 is greater than the aperture of another portion of the through holes 140, and at least one supporting beam 150 is provided between each adjacent two through holes 140. By limiting the shape of the connector 110, the overall weight of the connector 110 can be reduced, and the overall strength of the connector 110 can be ensured by utilizing the transition connector 113 and the supporting beam 150.

[0037] In addition, the plurality of special-shaped claws may be a plurality of first special-shaped claws 120 and a plurality of second special-shaped claws 130;

[0038] A plurality of first special-shaped claws 120 are disposed on one side of the first connecting portion 111, and a plurality of second special-shaped claws 130 are disposed on a side of the second connecting portion 112 opposite to the first connecting portion 111;

[0039] A first spacing portion 121 is disposed between each two adjacent first special-shaped claws 120 , and a second spacing portion 131 is disposed between each two adjacent second special-shaped claws 130 . The spacing dimensions of the first spacing portions 121 are equal to the spacing dimensions of the second spacing portions 131 .

[0040] Specifically, a plurality of first special-shaped claws 120 are arranged at the end of the first connecting portion 111, and a plurality of second special-shaped claws 130 are arranged at the end of the second connecting portion 112; wherein, each first special-shaped claw 120 has at least one second special-shaped claw 130 arranged oppositely, and an arc-shaped groove 160 is provided on the opposite sides of each two adjacent first special-shaped claws 120, and on the opposite sides of each two adjacent second special-shaped claws 130. By utilizing the arc-shaped groove 160, the middle parts of the first special-shaped claw 120 and the second special-shaped claw 130 can be hollow parts, and the overall weight of the connecting device 100 can be further reduced, which is more conducive to the lightweight of the three-section rail.

[0041] In addition, the second special-shaped claws 130 are fixedly connected to the second connecting portion 112 , and the ends of each second special-shaped claw 130 close to the middle rail 300 are arc surfaces.

[0042] In summary, a connection device in a three-section rail in an embodiment of the present invention has at least the following beneficial effects compared with the prior art method of connecting the upper rail and the middle rail through a solid connector:

[0043] In the connecting device 100 used in the three-section rail provided by the utility model, the side wall of the middle rail 300 is engaged by a plurality of special-shaped claws, so that the upper rail 200 and the middle rail 300 can be slidably connected, and a spacer is provided between each adjacent two special-shaped claws among the plurality of special-shaped claws, so that the overall weight of the connecting device 100 can be greatly reduced, and at the same time, by limiting the equal spacing size between the spacers, the engagement strength of the special-shaped claws and the middle rail 300 can be guaranteed to ensure stability, thereby solving the technical problem in the prior art that the solid connecting piece 110 will increase the overall weight of the three-section rail, which is not conducive to the overall lightweight of the three-section rail and affects the overall service life of the three-section rail to a certain extent.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A connection device used in a three-section rail, characterized in that: The connecting device is used to connect the upper rail and the middle rail in the three-section rail; The connecting device comprises a connecting piece for connecting with the upper rail, and a plurality of special-shaped claws respectively arranged on opposite sides of the connecting piece, wherein a gap is arranged between the special-shaped claw on one side of the connecting piece and the special-shaped claw on the other side to form an accommodation gap opposite to the middle rail, and the special-shaped claw is used to engage with the middle rail so that the connecting piece is slidably connected to the middle rail; Among the plurality of special-shaped claws, a spacing portion is provided between each adjacent two of the special-shaped claws, and the spacing sizes between each of the spacing portions are equal.

2. The connection device used in three-section rail according to claim 1, characterized in that: The connecting member includes a first connecting portion, a second connecting portion and a transition connecting portion provided between the first connecting portion and the second connecting portion; The cross-sectional dimension of the first connecting portion is greater than the cross-sectional dimension of the second connecting portion, and the length dimension of the second connecting portion is greater than the length dimension of the first connecting portion.

3. The connecting device used in a three-section rail according to claim 2, characterized in that: A plurality of through holes are provided on the first connecting portion along the length direction of the first connecting portion.

4. The connecting device for use in a three-section rail according to claim 3, characterized in that: The apertures of some of the through holes among the plurality of through holes are larger than the apertures of another portion of the through holes.

5. The connecting device used in three-section rail according to claim 4, characterized in that: At least one supporting beam is disposed between each two adjacent through holes.

6. The connection device for use in a three-section rail according to claim 2, characterized in that: The connecting device comprises a plurality of first special-shaped claws and a plurality of second special-shaped claws; A plurality of the first special-shaped claws are arranged on one side of the first connecting portion, and a plurality of the second special-shaped claws are arranged on a side of the second connecting portion opposite to the first connecting portion; A first spacing portion is provided between each two adjacent first special-shaped claws, and a second spacing portion is provided between each two adjacent second special-shaped claws. The spacing size of the first spacing portion is equal to the spacing size of the second spacing portion.

7. The connecting device for use in a three-section rail according to claim 6, characterized in that: A plurality of first special-shaped claws are arranged at the end of the first connecting portion, and a plurality of second special-shaped claws are arranged at the end of the second connecting portion; Wherein, each of the first special-shaped clamping claws has at least one second special-shaped clamping claw arranged opposite thereto.

8. The connecting device used in a three-section rail according to claim 7, characterized in that: The opposite sides of each adjacent pair of the first special-shaped claws and the opposite sides of each adjacent pair of the second special-shaped claws are provided with arc-shaped grooves.

9. The connecting device used in a three-section rail according to claim 6, characterized in that: The first special-shaped clamping claw is fixedly connected to the first connecting portion, and the second special-shaped clamping claw is fixedly connected to the second connecting portion.

10. The connection device used in three-section rail according to claim 6, characterized in that: The end of each of the first special-shaped claws close to the middle rail is a curved surface, and the end of each of the second special-shaped claws close to the middle rail is a curved surface.

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