Two-section expansion type furniture plate body connecting piece

Abstract

The utility model relates to an installation part of a furniture plate, in particular to a two-section expansion type furniture plate body connecting piece which mainly comprises an eccentric wheel and a connecting sleeve. The eccentric wheel is arranged in the plate body A, and the connecting sleeve is arranged on the plate body B; the connecting sleeve is further provided with a connecting rod, and the connecting rod is connected with the eccentric wheel in a buckling mode. The connecting sleeve is composed of a connecting column and a connector, the connecting column is inserted into the plate body A, and the connector is inserted into the plate body B. A first conical groove and a second conical groove are formed in the connector and arranged in the axis direction of the connecting rod. The connecting rod is further provided with a first frustum and a second frustum, and the first frustum and the second frustum are connected with the first conical groove and the second conical groove respectively in a matched mode so that the connector can expand twice when the connecting rod moves. The two-section expansion type furniture plate body connecting piece is good in connecting stability and high in firmness.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture board's connecting component, specifically speaking, a two-stage expansion type furniture board body connecting piece. BACKGROUND

[0002] The board body connecting piece is a common component for furniture assembly at present, which realizes the mutual connection between two board bodies by pulling the connecting rod and the connecting head through the eccentric wheel.

[0003] Chinese patent document CN205956133U discloses a locking type board body connecting piece for furniture, which utilizes the cooperation between the connecting conical part at the lower end of the connecting rod and the conical groove in the expansion head to make the connecting head expand when the connecting rod is pulled by the eccentric wheel, and the connecting head is inverted and buckled in the board body. Although this structure can also realize the connection between the board bodies, it still has major technical defects. In the above-mentioned board body connecting piece, the expansion head and the conical groove are in cooperation with inclined surfaces, and the expansion head and the conical groove are always pressed tightly by the eccentric wheel. However, when the board body bears external force, the head of the connecting rod and the eccentric wheel will be loose, at which time the external force between the expansion head and the conical groove disappears. Under the elastic recovery force of the conical groove, the expansion head will retreat along its axial direction, which makes the connection between the connecting head and the board body loose, and even makes the connecting head come out of the board body, resulting in the failure of the connection between the board bodies. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art, and provides a two-stage expansion type furniture board body connecting piece with good connection stability and high firmness.

[0005] The utility model provides a two-stage expansion type furniture board body connecting piece, which mainly comprises an eccentric wheel and a connecting sleeve. The eccentric wheel is arranged in a board body A, and the connecting sleeve is arranged on a board body B. The connecting sleeve further comprises a connecting rod, which is connected with the eccentric wheel through buckling. The connecting sleeve is composed of a connecting column and a connecting head, wherein the connecting column is inserted into the board body A, and the connecting head is inserted into the board body B. The connecting head is provided with a first conical groove and a second conical groove, which are arranged along the axial direction of the connecting rod. The connecting rod is further provided with a first conical platform and a second conical platform, which are connected with the first conical groove and the second conical groove respectively, so that the connecting head is expanded twice when the connecting rod moves.

[0006] Through the optimization of the above structure, the inner diameter and the inclination of the first conical groove are smaller than those of the second conical groove. The first conical groove and the second conical groove are arranged in the same direction, and both of them gradually narrow towards the eccentric wheel.

[0007] Through the optimization of the above structure, the end of the connecting rod is further provided with a cavity. The cavity is located at the end of the connecting head and can be deformed when the second conical platform is pulled.

[0008] Further improvement is made on the above structure, the connecting sleeve comprises a first connecting part and a second connecting part. The first connecting part and the second connecting part are provided with clamping heads and clamping grooves and are connected together through the clamping heads and the clamping grooves.

[0009] Optimization is made on the above structure, the clamping heads and the clamping grooves are staggered on the two sides of the first connecting part and the second connecting part.

[0010] The two-section expansion type furniture plate body connecting piece has the advantages that:

[0011] 1. The plate body connecting piece adopts a two-section connecting head expansion structure. Firstly, the two ends of the connecting head are expanded to have two positionable positions on the axis of the connecting rod, so that linear positioning is formed between the expansion part of the connecting head and the connecting rod, and the stability of the connecting head after expansion and the connecting rod is improved. Secondly, the two-section expansion of the connecting head can avoid the backtracking of the connecting rod when the connecting rod is subjected to external force due to the existence of elastic restoring force, and the reliability of the connection between the plate body A and the plate body B is improved.

[0012] 2. In the plate body connecting piece, the inner diameter and the inclination of the first taper groove are smaller than those of the second taper groove. In the direction of the eccentric wheel along the axis of the connecting rod, the inner diameter of the taper groove gradually decreases, so that expansion is first generated at the end of the connecting head when the connecting rod and the connecting head are moved, and the force backtracking of the connecting rod during installation is avoided. The reduction of the inclination of the taper groove can ensure the expansion degree of the end of the connecting rod when the connecting rod is pulled, and make the end of the connecting rod produce a small amount of deformation under the condition that the force arm of the second taper groove gradually decreases, and further improve the firmness of the connection between the connecting rod and the connecting head. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is an assembly schematic view of the best embodiment of the utility model;

[0014] Fig. 2 It is an exploded schematic view of the best embodiment of the utility model;

[0015] Fig. 3 It is an installation sectional view of the connecting sleeve and the connecting rod of the utility model;

[0016] Fig. 4 It is an installation sectional view of the best embodiment of the utility model.

[0017] The symbols in the drawing are as follows: plate body A 01, plate body B 02, eccentric wheel 1, connecting column 21, connecting head 22, first taper groove 23, second taper groove 24, clamping head 26, clamping groove 27, connecting rod 3, first taper 31, second taper 32, cavity 33. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The following embodiments are one or several examples capable of realizing the technical solutions of the utility model, obtaining corresponding technical effects and solving corresponding technical problems, and do not mean that the protection scope of the technical solutions only includes the following embodiments.

[0019] According to Figs. 1 to 4 As shown in the figure, the two-section expansion type furniture plate body connecting piece of the utility model mainly consists of eccentric wheel 1, connecting sleeve and connecting rod 3. The eccentric wheel 1 is installed in the plate body A01 and can rotate in the plate body A01. One end of the connecting sleeve is fixed in the plate body B02, and the other end is inserted in the plate body A01. The connecting rod 3 is arranged in the connecting sleeve, and one end of the connecting rod 3 extends out of the connecting sleeve. The connecting rod 3 can move back and forth in the connecting sleeve along the axial direction, and the end extending out of the connecting sleeve is connected with the eccentric wheel 1. In the utility model, the connecting sleeve includes connecting column 21 and connecting head 22. The connecting column 21 and the connecting head 22 are processed in an integrated manner, wherein the connecting head 22 is inserted in the plate body B02, and the connecting column 21 is inserted in the plate body A01. The first taper groove 23 and the second taper groove 24 are formed in the connecting head 22 and are arranged along the axis of the connecting rod 3. The first taper 31 and the second taper 32 are formed on the connecting rod 3, and the connecting rod 3 and the first taper 31 and the second taper 32 are processed in an integrated manner, and the first taper 31 and the second taper 32 are connected with the first taper groove 23 and the second taper groove 24 respectively. When tension is applied to the connecting rod 3, the second taper 32 first causes the second taper groove 24 to expand, and when the connecting rod 3 continues to pull, the first taper 31 causes the first taper groove 23 to expand, so as to expand both ends of the connecting head 22.

[0020] In one embodiment of the utility model, the first taper groove 23 and the second taper groove 24 are arranged in the same direction, and both gradually incline and narrow in the direction of the eccentric wheel 1. The inner diameter of the first taper groove 23 is smaller than that of the second taper groove 24, so as to ensure that the second taper groove 24 can first expand when the connecting rod 3 bears tension. At the same time, the inclination of the first taper groove 23 is also smaller than that of the second taper groove 24, that is, the angle between the first taper groove 23 and the axis of the connecting rod 3 is smaller than that of the second taper groove 24, so as to ensure that the second taper 32 can always push the second taper groove 24 to expand when the first taper 31 pushes the first taper groove 23 to expand.

[0021] In another embodiment of the utility model, the connecting rod 3 is also provided with a cavity 33. The cavity 33 is located at the end of the connecting rod 3 in the connector 22, and when the connecting rod 3 is pulled, the pressure after the cooperation of the first taper 31 and the first taper groove 23 can make the second taper 32 deform. In this embodiment, the cavity 33 extends from the end face of the connecting rod 3 to the position of the first taper 31, and the wall thickness of the second taper 32 on the connecting rod 3 is smaller than that of the first taper 31, so as to ensure that the second taper 32 can produce a small amount of inward contraction deformation after being stressed. In addition, the connecting column 21 and the connector 22 can be made of non-metallic materials, while the connecting rod 3 is made of metal materials. With the continuous pulling of the connecting rod 3, the restoring force of the second taper 32 after stress deformation is greater, and when the connecting rod 3 is pulled to a certain extent, the second taper 32 is pressed and pierced into the inner wall of the connector 22, so that the connecting rod 3 and the connector 22 are relatively fixed.

[0022] In one of the embodiments of the utility model, the connecting sleeve is composed of a first connecting part and a second connecting part. The first connecting part and the second connecting part are respectively arranged on the side of the connecting rod 3 and are fixed together by the mutual buckling of the clamping head 26 and the clamping groove 27, so as to realize the installation of the connecting rod 3 in the connecting sleeve. The clamping head 26 and the clamping groove 27 are processed in an integral molding manner with the first connecting part or the second connecting part, so as to improve the buckling strength of the first connecting part and the second connecting part.

[0023] In another embodiment of the utility model, the clamping head 26 and the clamping groove 27 are arranged in an interlaced manner on the two sides of the first connecting part and the second connecting part, so as to balance the buckling force between the first connecting part and the second connecting part on the two sides of the connecting rod 3, and avoid the loosening between the clamping head 26 and the clamping groove 27 due to the external force borne by the connecting rod 3.

[0024] When the plate body connecting piece of the utility model is installed, first, the mounting holes are drilled on the plate body A01 and the plate body B02, and then the connecting sleeve is inserted into the plate body A01 and the plate body B02. Then the eccentric wheel 1 is installed on the position corresponding to the head of the connecting rod 3 from the side, and rotating the eccentric wheel 1 can generate a pulling force on the connecting rod 3 in the direction of the eccentric wheel 1. At this time, the second taper 32 is stressed to make the second taper groove 24 expand outward, and the bottom of the connector 22 is inverted and buckled on the inner wall of the plate body B02. With the continuous pulling of the connecting rod 3, the first taper 31 is stressed to make the first taper groove 23 expand outward, and the upper part of the connector 22 is inverted and buckled on the inner wall of the plate body A01. In this process, the second taper 32 is slightly deformed under the influence of the extrusion pressure, and the buckling force between the connector 22 and the plate body B02 is increased under the action of the restoring force.

[0025] The above specific embodiments are only the implementation modes of the utility model with better technical effects, and any structure identical or equivalent to the two-stage expansion type furniture plate body connecting piece of the utility model is within the protection scope of the utility model.

Claims

1. A two-stage expansion type furniture plate body connecting piece, comprising an eccentric wheel (1) arranged in a plate body A (01), a connecting sleeve arranged on a plate body B (02), and a connecting rod (3) arranged in the connecting sleeve and buckled with the eccentric wheel (1), characterized in that: The connecting sleeve comprises a connecting column (21) inserted into the plate body A (01) and a connecting head (22) inserted into the plate body B (02), the connecting head (22) is provided with a first taper groove (23) and a second taper groove (24) arranged along the axis of the connecting rod (3), and the connecting rod (3) is provided with a first taper (31) and a second taper (32) matched with the first taper groove (23) and the second taper groove (24).

2. The two-step expanding furniture panel connector of claim 1, wherein: The inner diameter and the inclination of the first taper groove (23) are smaller than those of the second taper groove (24), and the first taper groove (23) and the second taper groove (24) are arranged in the same direction and gradually narrow in the direction of the eccentric wheel (1).

3. The two-piece furniture web connector of claim 2, wherein: The end of the connecting rod (3) in the connecting head (22) is provided with a cavity (33) for deforming the second taper (32).

4. The two-part panel connector of any one of claims 1 to 3, wherein: The connecting sleeve comprises a first connecting part and a second connecting part, and the first connecting part and the second connecting part are connected by clamping heads (26) and clamping grooves (27).

5. The two-piece furniture web connector of claim 4, wherein: The clamping heads (26) and the clamping grooves (27) are staggered on both sides of the first connecting part and the second connecting part.

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