Three-in-one furniture connector

Abstract

A three-in-one furniture connector comprising a knob base, a support connection block, a first arcuate knob arm, and a second arcuate knob arm, characterized in that: the first arcuate knob arm is connected to the knob base, and the second arcuate knob arm is connected to the first arcuate knob arm via the support connection block; a guide clamping groove is formed between the first arcuate knob arm and the second arcuate knob arm, wherein a support rib for increasing the torque is arranged at the end of the guide clamping groove; wherein the first arcuate knob arm has a first anti-rotation device, and the second arcuate knob arm has a second anti-rotation device.

Description

TECHNICAL AREA

[0001] The present utility model relates to the field of furniture connector technology, in particular a three-in-one furniture connector. BACKGROUND

[0002] Currently, three-in-one connectors have become one of the most widely used fasteners in the manufacture and assembly of panel furniture due to their advantages, such as the possibility of multiple disassembly and assembly, concealed installation position, effective reduction of adhesive usage, and high assembly efficiency. Commercially available three-in-one connectors are also known as eccentric connectors. Their core structure typically consists of three parts: an eccentric, a connecting bolt, and a threaded nut. Turning the eccentric locks it into the connecting bolt, thus fulfilling the purpose of joining and securing the furniture.

[0003] However, the three-in-one connectors commonly available on the market still exhibit numerous structural flaws during actual assembly and use. When correctly installed in the pre-drilled mounting holes of the furniture panels, most three-in-one connectors struggle to achieve a stable and precise clamping engagement with the positioning pin provided in the mounting hole. The accuracy of the clamping connection is insufficient, which can easily lead to loosening or slippage of the clamping connection, thus severely compromising the connector's anti-loosening and anti-slip properties. With long-term use of the furniture, vibrations during transport, or uneven force application, the connector tends to detach from the positioning pin.This leads to widening gaps at the joints of the panel furniture, causing the structure to wobble and making the overall assembly unreliable, seriously compromising the structural stability and lifespan of the furniture. Simultaneously, some connectors, due to flawed design, exhibit insufficient torque during tightening to lock, easily resulting in slippage during rotation or inadequate locking. This further exacerbates the instability of the furniture joint and fails to meet the requirements for joint strength, stability, and durability of high-quality panel furniture. SPECIFIC EXECUTION FORMS

[0004] In view of the aforementioned shortcomings, the present utility model aims to provide a three-in-one furniture connector that offers reliable clamping, ideal anti-loosening action, and strong torque during the locking process.

[0005] To achieve this objective, the present utility model employs the following technical solution: A three-in-one furniture connector comprising a knob base, a support connection block, a first arcuate knob arm, and a second arcuate knob arm, wherein the first arcuate knob arm is connected to the knob base and the second arcuate knob arm is connected to the first arcuate knob arm via the support connection block; a guide clamping groove is formed between the first arcuate knob arm and the second arcuate knob arm, with a support rib arranged at the end of the guide clamping groove to increase torque; the first arcuate knob arm has a first anti-rotation device, and the second arcuate knob arm has a second anti-rotation device.

[0006] Preferably, in the above-mentioned three-in-one furniture connector, the first anti-rotation device and the second anti-rotation device are arranged opposite each other.

[0007] Preferably, in the above-mentioned three-in-one furniture connector, the first anti-rotation device and the second anti-rotation device are each designed in an arc-shaped convex form.

[0008] Preferably, in the above-mentioned three-in-one furniture connector, the opening width at the beginning end of the guide clamping groove is larger than the opening width at the end of the guide clamping groove.

[0009] Preferably, in the above-mentioned three-in-one furniture connector, a cross slot for screwing is formed on the top of the rotary knob base.

[0010] Preferably, in the above-mentioned three-in-one furniture connector, the cross slot is arranged in the center of the knob base.

[0011] Preferably, the above-mentioned three-in-one furniture connector has a positioning mark on the top of the rotary knob base.

[0012] Preferably, the above-mentioned three-in-one furniture connector has a rotary knob direction marking on the top of the rotary knob base.

[0013] Preferably, in the above-mentioned three-in-one furniture connector, the knob base, the support connection block, the first arc-shaped knob arm and the second arc-shaped knob arm are designed as a one-piece structure.

[0014] Preferably, in the above-mentioned three-in-one furniture connector, the thickness of the support connection block is greater than the thickness of the first arc-shaped rotary knob arm and the second arc-shaped rotary knob arm.

[0015] The advantageous effects of the present utility model are: (1) Since the first and second arc-shaped rotary knob arms are each equipped with the first and second anti-rotation devices respectively, a double anti-rotation effect (double limitation against reverse rotation) can be achieved after the clamping locking of the first and second arc-shaped rotary knob arms with the positioning pin. This effectively prevents the three-in-one furniture connector from rotating backward or slipping off during use of the furniture, during vibrations during transport, or under uneven force. This solves the well-known problem in the industry that existing three-in-one connectors have an insufficient anti-loosening effect, leading to unreliable furniture assembly. The overall structural stability of the panel furniture after assembly is significantly increased. (2) The additional support rib at the end of the guide clamping groove effectively increases the structural strength of the end of the guide clamping groove. This significantly increases the torque load capacity of the three-in-one furniture connector during locking and long-term use. It prevents the guide clamping groove from deforming or breaking due to excessive torque, thus preventing connector locking failure, extending the connector's service life, and simultaneously improving its structural stability. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a schematic structural view of an embodiment of the present utility model; Fig. Figure 2 is a schematic structural view of a further embodiment of the present utility model; Fig. Figure 3 is a top view of an embodiment of the present utility model.

[0016] Included: Rotary knob base 11, support connection block 12, first arcuate rotary knob arm 13, second arcuate rotary knob arm 14, guide clamping groove 15, support rib 16, first anti-rotation device 17, second anti-rotation device 18, cross slot 19, positioning mark 20, rotary knob direction mark 21. DETAILED DESCRIPTION OF PREFERRED EXECUTION FORMS

[0017] The following are detailed descriptions of embodiments of the present utility model. Examples of these embodiments are shown in the accompanying drawings, where identical or similar reference numerals consistently denote identical or similar elements or elements with identical or similar functions. The embodiments described below with reference to the drawings are exemplary and serve only to illustrate the present utility model; they are not to be understood as limiting the present utility model.

[0018] In the description of this utility model, terms indicating orientations or positional relationships, such as "longitudinal," "transverse," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "tip / top," "bottom / bottom," "inside," "outside," etc., are to be understood as being based on the orientations or positional relationships shown in the drawings. They serve only to facilitate the description of this utility model and to simplify its presentation, without indicating or implying that the designated device or element must have a specific orientation or be designed and operated in a specific orientation. Therefore, they are not to be understood as a limitation of this utility model.Furthermore, features defined as "first" and "second" can explicitly or implicitly include one or more of these features and serve to distinguish the described features without implying any order or weighting.

[0019] Unless otherwise expressly stated and defined, the terms "assembly," "connected," and "connection" in the description of this utility model are to be understood in a broad sense. For example, they may refer to a permanent connection, a detachable connection, or a one-piece connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium, or an internal connection between two elements. The specific meaning of the aforementioned terms in this utility model can be deduced by the average person skilled in the art from the specific context.

[0020] In the description of this utility model, unless otherwise stated, “several” means two or more.

[0021] As in the Fig.As shown in Figures 1 to 3, a three-in-one furniture connector comprises a knob base 11, a support connection block 12, a first arcuate knob arm 13, and a second arcuate knob arm 14. The first arcuate knob arm 13 is connected to the knob base 11, and the second arcuate knob arm 14 is connected to the first arcuate knob arm 13 via the support connection block 12. A guide clamping groove 15 is formed between the first arcuate knob arm 13 and the second arcuate knob arm 14, at the end of which a support rib 16 is arranged to increase the torque. The first arcuate knob arm 13 has a first anti-rotation device 17, and the second arcuate knob arm 14 has a second anti-rotation device 18. Since the first arc-shaped rotary knob arm 13 and the second arc-shaped rotary knob arm 14 are each equipped with the first back-rotation safety device 17 and 14 respectively,Equipped with a second anti-rotation device 18, a double anti-rotation effect can be achieved after the clamping locking of the first arcuate rotary knob arm 13 and the second arcuate rotary knob arm 14 with a positioning pin. This effectively prevents the three-in-one furniture connector from rotating backward or slipping during use of the furniture, during vibrations during transport, or under uneven force. This solves the well-known problem in the industry that existing three-in-one connectors have insufficient anti-loosening properties, leading to unreliable furniture assembly. The overall structural stability of the panel furniture after assembly is significantly increased.

[0022] It is worth noting that the additional support rib 16 attached to the end of the guide clamping groove 15 effectively reinforces the structural strength of this end. This significantly increases the torque load capacity of the three-in-one furniture connector during locking and long-term use. It prevents the guide clamping groove 15 from deforming or breaking due to excessive torque, thus preventing connector locking failure, extending the connector's service life, and simultaneously improving its structural stability.

[0023] In this embodiment of the three-in-one furniture connector, the first anti-rotation device 17 and the second anti-rotation device 18 are arranged opposite each other. This design ensures that the first anti-rotation device 17 and the second anti-rotation device 18 form a symmetrical clamping limit on the positioning pin. The force application is more balanced, which prevents a one-sided anti-rotation device from wearing down or deforming due to concentrated force. This further enhances the anti-loosening and anti-slip effect and simultaneously ensures the precise fit between the positioning pin and the guide clamping groove 15, prevents displacement of the clamping mechanism, and increases the structural stability of the first arcuate rotary knob arm 13 and the second arcuate rotary knob arm 14 after locking.

[0024] In this embodiment of the three-in-one furniture connector, the first anti-rotation device 17 and the second anti-rotation device 18 are each designed with an arcuate convex shape. The arcuate, convex structure increases the contact area between the anti-rotation device and the positioning pin, thereby increasing the friction between them and further optimizing the anti-loosening effect. At the same time, the arcuate structure itself exhibits good structural strength and wear resistance, which can reduce wear during long-term use and extend the service life of the anti-rotation device, thus indirectly increasing the overall durability of the connector.

[0025] In some embodiments of the three-in-one furniture connector, the opening width at the beginning of the guide clamping groove 15 is larger than the opening width at the end of the guide clamping groove 15, thus forming a gradually widening structure. This design allows the positioning pin to gradually press against the groove wall during insertion, achieving precise positioning. This ensures stable contact of the positioning pin with the end of the guide clamping groove 15 and the support rib 16, further increasing structural stability after clamping. Simultaneously, this structure reduces friction during insertion of the positioning pin, prevents wear on the groove wall, and extends the connector's service life. Furthermore, it guides the smooth retraction of the positioning pin during disassembly, making both assembly and disassembly convenient.

[0026] In this embodiment of the three-in-one furniture connector, a cross slot 19 for screwing is formed on the top of the knob base 11, with the cross slot 19 located in the center of the knob base 11. This design allows the torque during screwing to be distributed across the entire knob base 11, the first arcuate knob arm 13, and the second arcuate knob arm 14. This avoids localized force concentrations due to uneven force application, prevents deformation of the knob base 11 or slippage during turning, and ensures the stability and reliability of the screwing process. Furthermore, the structure of the cross slot 19 is simple and easy to manufacture, which does not increase the connector's production costs, and the groove shape of the cross slot 19 effectively prevents tool slippage, thus increasing workplace safety.

[0027] In this embodiment of the three-in-one furniture connector, a positioning mark 20 is provided on the top of the rotary knob base 11. This design effectively solves the problem that, with existing three-in-one furniture connectors, the clamping angle is difficult to judge during assembly, easily leading to assembly errors. It helps the operator to quickly align the position of the guide clamping groove 15 with the positioning pin in the mounting hole, significantly increasing assembly precision and efficiency and preventing loose connections or unstable structures due to assembly misalignment, as well as component wear from repeated disassembly and adjustment.

[0028] In this embodiment of the three-in-one furniture connector, a rotary knob direction indicator 21 is provided on the top of the knob base 11. The rotary knob direction indicator 21 allows for intuitive indication of the direction of rotation and the locking status of the connector. In conjunction with the Phillips head 19, this enables convenient and precise screw operation, prevents incorrect rotation or insufficient locking, and improves assembly efficiency and quality.

[0029] In this embodiment of the three-in-one furniture connector, the knob base 11, the support connection block 12, the first arcuate knob arm 13, and the second arcuate knob arm 14 are formed as a single-piece structure (molded in one piece). This design can significantly improve the strength and rigidity of the overall structure, prevent loosening, deformation, or breakage due to insufficiently fastened component connections, and further increase the torque load capacity and durability of the connector.

[0030] In some embodiments of the three-in-one furniture connector, the thickness of the support block 12 is greater than the thickness of the first arcuate knob arm 13 and the second arcuate knob arm 14. The design with the thickened support block 12 increases its rigidity and ensures more secure support and positioning of the first arcuate knob arm 13 and the second arcuate knob arm 14. This prevents the first arcuate knob arm 13 and the second arcuate knob arm 14 from shifting or deforming during rotation and clamping, thereby strengthening the fit and clamping action between the anti-rotation device and the positioning pin, and improving overall anti-loosening and anti-slip performance.

[0031] The technical principles of the present utility model have been described above with reference to specific embodiments. These descriptions serve only to explain the principles of the present utility model and must not be interpreted as limiting the scope of protection of the present utility model. Based on the explanations given here, a person skilled in the art can derive other specific embodiments without inventive effort, all of which fall within the scope of protection of the present utility model.

Claims

[1] Three-in-one furniture connector comprising a knob base, a support connecting block, a first arc-shaped knob arm and a second arc-shaped knob arm, characterized by , that: the first arc-shaped rotary knob arm is connected to the rotary knob base and the second arc-shaped rotary knob arm is connected to the first arc-shaped rotary knob arm via the support connection block; a guide clamping groove is formed between the first arc-shaped rotary knob arm and the second arc-shaped rotary knob arm, wherein a support rib for increasing the torque is arranged at the end of the guide clamping groove; wherein the first arc-shaped rotary knob arm has a first anti-rotation device and the second arc-shaped rotary knob arm has a second anti-rotation device. [2] Three-in-one furniture connector according to claim 1, characterized by that the first anti-rotation device and the second anti-rotation device are arranged opposite each other. [3] Three-in-one furniture connector according to claim 2, characterized by that the first anti-rotation device and the second anti-rotation device are each shaped like an arc convex curve. [4] Three-in-one furniture connector according to claim 1, characterized by , that the opening width at the beginning end of the guide clamping groove is larger than the opening width at the end of the guide clamping groove. [5] Three-in-one furniture connector according to claim 1, characterized by , that a cross slot for screwing is formed on the top of the rotary knob base. [6] Three-in-one furniture connector according to claim 5, characterized by , that the cross-head screw is located in the center of the rotary knob base. [7] Three-in-one furniture connector according to claim 6, characterized by that a positioning mark is provided on the top of the rotary knob base. [8] Three-in-one furniture connector according to claim 7, characterized by, that a rotary knob direction marking is provided on the top of the rotary knob base. [9] Three-in-one furniture connector according to claim 1, characterized by , that the rotary knob base, the support connecting block, the first arc-shaped rotary knob arm and the second arc-shaped rotary knob arm are designed as a single-piece structure. [10] Three-in-one furniture connector according to claim 9, characterized by , that the thickness of the support connecting block is greater than the thickness of the first arc-shaped rotary knob arm and the second arc-shaped rotary knob arm.

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