Connecting piece for fixing furniture

Abstract

The utility model relates to a connecting piece for fixing furniture. The connecting piece comprises a screw rod, a sleeve and three expansion pieces, a thread part is arranged at one end of the screw rod; the sleeve is of a cavity structure with the two ends open. The three expansion pieces are arranged on the end face of the sleeve at intervals, threaded holes are formed in the inner circumferential walls of the three expansion pieces, and the threaded part of the screw penetrates through the sleeve and is installed in the threaded holes, so that the three expansion pieces are expanded; clamping parts are respectively arranged on the peripheral walls of the three expansion pieces, and each clamping part comprises a plurality of clamping bulges which are arranged at intervals. According to the connecting piece, the threaded parts are screwed into the threaded holes of the three expansion pieces by rotating the screw rod, so that the three expansion pieces are expanded and expanded in the radial direction, the three expansion pieces are in full contact with mounting hole sites of the plate furniture, and stable connection between the connecting piece and the plate furniture is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting piece technical field, especially a connecting piece for fixing furniture. BACKGROUND

[0002] In the process of assembling plate furniture, usually, mounting hole positions are formed on the plate furniture, and then the mounting hole positions are inserted by screws, bolts and other fixing members to connect and fix the plate furniture.

[0003] However, after the existing screws, bolts and other fixing members are installed, there is usually a gap between the fixing members and the mounting hole positions on the plate, which easily causes the connection between the plate furniture to be unstable. In addition, the existing connecting pieces also have problems such as time-consuming and laborious installation, and troublesome installation. SUMMARY

[0004] Therefore, the utility model aims to overcome the defects of the prior art and provide a connecting piece for fixing furniture to achieve firm connection and quick installation.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0006] A connecting piece for fixing furniture, comprising a screw rod, a sleeve and three expansion members;

[0007] One end of the screw rod is provided with a threaded portion;

[0008] The sleeve is a cavity structure with open ends;

[0009] The three expansion members are respectively arranged at intervals on the end face of the sleeve, and the inner circumferential wall of the three expansion members forms a threaded hole. The threaded portion of the screw rod passes through the sleeve and is installed in the threaded hole to expand the three expansion members. The outer circumferential wall of the three expansion members is respectively provided with a clamping portion, and the clamping portion comprises a plurality of clamping protrusions arranged at intervals.

[0010] As an embodiment, the inside of the sleeve is provided with a limiting sliding groove, one end of the limiting sliding groove away from the three expansion members is fixedly provided with a limiting cylinder, the inside of the limiting cylinder is provided with a limiting hole, the screw rod passes through the limiting hole, and the screw rod and the limiting hole are in interference fit.

[0011] As an embodiment, the limiting cylinder is a cylindrical structure made of elastic hard rubber, and the outer circumferential wall of the limiting cylinder is in interference fit on the inner circumferential wall of the sleeve.

[0012] As an embodiment, the three expansion members are all circular arc structures made of elastic hard rubber, and the three expansion members are respectively and uniformly distributed on the end face of the sleeve.

[0013] As an implementation form, the inner circumferential walls of the three expansion members are respectively provided with internal threads, and the internal threads on the inner circumferential walls of the three expansion members jointly form the threaded hole.

[0014] As an implementation form, a gap is respectively formed between two adjacent expansion members, and the gap is arranged in communication with the threaded hole.

[0015] As an implementation form, a circular sheet is coaxially sleeved on the screw rod.

[0016] As an implementation form, a nut is arranged at one end of the screw rod away from the threaded portion.

[0017] As an implementation form, a cross slot is arranged on the nut.

[0018] Compared with the prior art, the connecting piece for fixing furniture has the following beneficial effects:

[0019] The three expansion members are first installed into the mounting hole positions of the plate furniture, the threaded portion is rotated into the threaded holes of the three expansion members by rotating the screw rod, so that the three expansion members are expanded and expanded along the radial direction, so that the three expansion members are in full contact with the mounting hole positions of the plate furniture, thereby ensuring the stable connection of the connecting piece and the plate furniture; in addition, the cross slot on the nut can drive the screw rod to rotate, so that the threaded portion of the screw rod is quickly rotated into the threaded holes of the three expansion members, thereby effectively improving the installation efficiency and convenience of the connecting piece.

[0020] In order to better understand and implement, the utility model is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the connecting piece for fixing furniture of the utility model;

[0022] Figure 2 It is an exploded schematic view of the connecting piece for fixing furniture of the utility model;

[0023] Figure 3 It is a structural schematic view of the screw rod of the connecting piece for fixing furniture of the utility model;

[0024] Figure 4 It is a side view of the nut for fixing furniture of the utility model;

[0025] Figure 5 It is a side view of the three expansion members of the connecting piece for fixing furniture of the utility model;

[0026] Figure 6 It is a top view of the three expansion members of the connecting piece for fixing furniture of the utility model.

[0027] Explanation of reference signs: 10, screw rod; 11, threaded portion; 12, circular sheet; 13, nut; 14, cross slot; 20, sleeve; 21, expansion piece; 22, threaded hole; 23, limiting cylinder; 24, clamping protrusion; 25, internal thread; 26, gap. DETAILED DESCRIPTION

[0028] To further illustrate the embodiments, the utility model provides the drawings. These drawings are part of the utility model disclosure, which mainly serves to illustrate the embodiments, and can be combined with the relevant description of the specification to explain the operating principle of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementations and the advantages of the utility model.

[0029] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0030] Please refer to Figures 1 to 6 The embodiment provides a connecting piece for fixing furniture, which comprises a screw rod 10, a sleeve 20 and three expansion pieces 21; one end of the screw rod 10 is provided with a threaded portion 11; the sleeve 20 is a cavity structure with two open ends; three expansion pieces 21 are respectively arranged at the end faces of the sleeve 20, and the inner circumferential walls of the three expansion pieces 21 form threaded holes 22; the threaded portion 11 of the screw rod 10 penetrates through the sleeve 20 and is installed in the threaded holes 22, so as to expand the three expansion pieces 21; the outer circumferential walls of the three expansion pieces 21 are respectively provided with clamping portions, and the clamping portions comprise a plurality of clamping protrusions 24 arranged at intervals.

[0031] Specifically, the inside of the sleeve 20 of the embodiment is provided with a limiting sliding groove, a limiting cylinder 23 is fixedly sleeved at one end of the limiting sliding groove away from the three expansion pieces 21, a limiting hole is arranged in the middle of the limiting cylinder 23, the limiting hole is coaxially arranged with the limiting sliding groove, and the screw rod 10 of the embodiment is in interference fit with the limiting hole. In addition, the threaded portion 11 of the embodiment is slidably arranged between the limiting cylinder 23 and the threaded hole 22.

[0032] The limiting cylinder 23 of the present embodiment is an elastic cylindrical structure with open ends, and the outer peripheral wall of the limiting cylinder 23 is tightly attached to the inner peripheral wall of the sleeve 20. In the present embodiment, the limiting cylinder 23 is made of hard elastic material such as plastic, so that the screw rod 10 can be slidably sleeved in the limiting hole of the limiting cylinder 23, and the limiting cylinder 23 also serves as a limiting structure of the threaded portion 11 to prevent the threaded portion 11 from sliding out of the sleeve 20.

[0033] Optionally, the three expansion members 21 of the present embodiment are uniformly distributed at equal intervals on the end face circumferential edge of the sleeve 20, and the inner walls of the three expansion members 21 jointly form the threaded hole 22. In the present embodiment, the inner walls of the three expansion members 21 are provided with internal threads 25, so that the internal threads 25 of the three expansion members 21 jointly form the threaded hole 22 of the present embodiment; in addition, the outer side walls of the three expansion members 21 jointly form the clamping structure of the three expansion members 21 through the clamping protrusions 24 on the clamping portion.

[0034] Further, the present embodiment is provided with a gap 26 between two adjacent expansion members 21, and the gap 26 is arranged in communication with the threaded hole 22. Thus, when the threaded portion 11 of the present embodiment is screwed into the threaded hole 22, each expansion member 21 is respectively expanded radially outward, and the gap 26 ensures that each expansion member 21 is not connected to each other, so that each expansion member 21 is independently arranged at one end of the sleeve 20 and can be freely expanded. Moreover, the three expanded expansion members 21 can be tightly pressed outward, and the clamping effect of the three expansion members 21 can be further improved through the clamping protrusions 24 on the outer side walls of the three expansion members 21.

[0035] Optionally, the screw rod 10 is coaxially and rigidly connected with a circular sheet 12, and the screw rod 10 of the present embodiment is provided with a nut 13 at an end away from the threaded portion 11, and the nut 13 is provided with a cross slot 14. In this way, the present embodiment can drive the cross slot 14 of the nut 13 to rotate through a screwdriver or the like, and then synchronously drive the screw rod 10 to rotate.

[0036] That is, the present embodiment drives the screw rod 10 to rotate through the nut 13 on the screw rod 10, so as to quickly screw the threaded portion 11 of the screw rod 10 into the threaded hole 22 of the three expansion members 21, thereby improving the installation efficiency and convenience of the connecting piece.

[0037] Compared with the prior art, the utility model install three expansion pieces 21 to the mounting hole position of the plate furniture first, make the threaded portion 11 of screw rod 10 with three expansion pieces 21's threaded hole 22 with this make three expansion pieces 21 along its radial expansion support big, so that three expansion pieces 21 with the mounting hole position of the plate furniture contact fully, with this guarantee the connecting piece and the connection of the plate furniture firm, in addition, the utility model can drive screw rod 10 to rotate through the cross slot 14 on the nut 13, with this the threaded portion 11 of screw rod 10 is quickly screwed into three expansion pieces 21's threaded hole 22, effectively improve the installation efficiency and convenience of connecting piece.

[0038] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it can not be understood as the limitation of the range of the utility model for fixing furniture connecting piece. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, several modifications and improvements can be made, which belong to the protection scope of the utility model.

Claims

1. A connecting piece for fixing furniture, characterized in that: comprising a screw rod, a sleeve and three expansion pieces; one end of the screw rod is provided with a threaded part; the sleeve is a cavity structure with open ends; three expansion pieces are respectively arranged at the end faces of the sleeve, and the inner circumferential walls of the three expansion pieces form threaded holes, the threaded part of the screw rod passes through the sleeve and is installed in the threaded holes to expand the three expansion pieces; the outer circumferential walls of the three expansion pieces are respectively provided with clamping parts, and the clamping parts comprise a plurality of clamping protrusions arranged at intervals.

2. The connecting piece for fixing furniture according to claim 1, characterized in that: the inside of the sleeve is provided with a limiting sliding groove, a limiting cylinder is fixedly sleeved at one end of the limiting sliding groove away from the three expansion pieces, the inside of the limiting cylinder is provided with a limiting hole, the screw rod passes through the limiting hole, and the screw rod and the limiting hole are in interference fit.

3. The connecting piece for fixing furniture according to claim 2, characterized in that: the limiting cylinder is a cylindrical structure made of elastic hard rubber, and the outer circumferential wall of the limiting cylinder is in interference fit on the inner circumferential wall of the sleeve.

4. The connecting piece for fixing furniture according to claim 2, characterized in that: the three expansion pieces are each arc-shaped structures made of elastic hard rubber, and the three expansion pieces are respectively and uniformly distributed on the end faces of the sleeve.

5. The connecting piece for fixing furniture according to claim 4, characterized in that: the inner circumferential walls of the three expansion pieces are respectively provided with internal threads, and the internal threads on the inner circumferential walls of the three expansion pieces together enclose the threaded holes.

6. The connecting piece for fixing furniture according to claim 5, characterized in that: a gap is respectively formed at intervals between two adjacent expansion pieces, and the gap is arranged in communication with the threaded hole.

7. The connecting piece for fixing furniture according to claim 1, characterized in that: a circular sheet is coaxially sleeved on the screw rod.

8. The connecting piece for fixing furniture according to claim 1, characterized in that: the end of the screw rod away from the threaded part is provided with a nut.

9. The connecting piece for fixing furniture according to claim 8, characterized in that: the nut is provided with a cross slot. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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