A concealed connector

By designing a snap-fit ​​groove structure for the concealed connector, the problem of low installation efficiency of existing concealed connectors is solved, achieving fast, stable connection and aesthetic effect for furniture panels.

CN224364183UActive Publication Date: 2026-06-16FOSHAN NANHAI DISTRICT XINDAQING HARDWARE PLASTIC PRODUCTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FOSHAN NANHAI DISTRICT XINDAQING HARDWARE PLASTIC PRODUCTS CO LTD
Filing Date
2025-09-29
Publication Date
2026-06-16

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Abstract

The utility model provides a kind of invisible connecting piece, belong to furniture field, including shell and the installation body of fixed connection in shell, the shell includes the accommodating cavity being arranged along first direction, and the limit mouth along the side outer wall of shell through, the limit mouth communicates accommodating cavity, accommodating cavity is used to connect male piece, the limit mouth is used to limit the movement of male piece along second direction, the clamping groove for connecting board between the shell and installation body is formed, the clamping groove for connecting board between the shell and installation body is formed, and clamping groove is connected in the clamping block of board inner preset, when using, connecting piece whole fixed connection is connected in the side of board, limit mouth is located in the side of board, and male piece is installed in another board, and its end is clamped into accommodating cavity from the opening of accommodating cavity, i.
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Description

Technical Field

[0001] This utility model relates to the field of furniture, and specifically refers to a concealed connector. Background Technology

[0002] Engineered wood furniture is the mainstream in today's market, especially suitable for the modern minimalist style favored by young people. Panel furniture uses engineered wood with a decorative surface as the base material and is assembled using hardware connectors. The current connection method for panel furniture is the three-in-one connector invented by the German company Hafele in the 1970s. The three-in-one connector is the mainstream product, accounting for over 90% of the market. Also known as an eccentric connector, it consists of an eccentric wheel, a rod, and a pre-embedded nut. The emergence of the three-in-one connector has given the furniture industry vast development space, especially its assembly and disassembly capabilities. It has enabled furniture to evolve from the previous model of on-site production and small-scale workshops to a production line model where furniture is assembled at home. This significantly reduces transportation costs and achieves large-scale, industrialized, and standardized development of furniture. The three-in-one connector is the cornerstone of modern furniture's industrialization, large-scale, and standardized development; therefore, it is still widely used in the furniture market. However, the biggest drawback of the three-in-one connector is that exposed holes remain on the outer panels after the boards are connected, directly affecting the appearance of the furniture.

[0003] To address aesthetic concerns, invisible connectors have emerged in the market. These connectors consist of a male component and a female component that does not include an eccentric wheel. The male and female components are installed on different plates and connected via a snap-fit ​​mechanism, making the connectors invisible on the surface. However, existing female components all require threaded connections to the plate, resulting in low installation efficiency. For example, in the invention patent application number 202011237694 2, the mounting body is a screw, and the female component is connected to the plate via the screw, making both assembly and disassembly inconvenient. Utility Model Content

[0004] To address the above problems, this utility model provides an invisible connector to solve one or more technical problems existing in the prior art, and at least provides a beneficial option or creates conditions.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An invisible connector includes a housing and a mounting body fixedly connected to the housing. The housing includes a receiving cavity disposed along a first direction and a limiting port penetrating one side of the outer wall of the housing along a second direction. The limiting port communicates with the receiving cavity, which is used to receive a male component. The limiting port is used to restrict the movement of the male component along the second direction. A snap-fit ​​groove for connecting a sheet metal is formed between the housing and the mounting body.

[0007] Preferably, the mounting body is connected to the housing via a connector, the width of the connector along a third direction being smaller than that of the mounting body, so that a first snap-fit ​​groove is formed on both sides of the connector.

[0008] Preferably, the connector, housing, and mounting body form a second snap-fit ​​groove in the fourth direction.

[0009] Preferably, the concealed connector further includes a snap-fit ​​portion, which snaps into the first snap-fit ​​groove and the second snap-fit ​​groove, for fixing the connector to the plate.

[0010] Preferably, a clearance groove is provided on the outer side of the limiting port for connecting with the male component.

[0011] Preferably, the accommodating cavity includes a first end and a second end disposed along a first direction, the first end being used to accommodate the male component, and a first sliding surface being provided on one side of the second end.

[0012] Preferably, a second sliding surface is provided on the other side of the second end.

[0013] Preferably, a groove is provided on the side of the mounting body away from the housing.

[0014] Preferably, the axis of the groove is parallel to the first direction.

[0015] The advantages of this utility model are as follows: This utility model forms a snap-fit ​​groove between the shell and the mounting body for connecting the plates. The snap-fit ​​groove is connected to a pre-set snap-fit ​​block inside the plate. When in use, the connector is fixedly connected to the side of the plate. The limiting port is on the side of the plate. The male part installed on another plate can be installed by inserting its end into the receiving cavity through the opening of the receiving cavity, which completes the installation. The installation is convenient. Attached Figure Description

[0016] Figure 1 This is a first-view diagram of Example 1;

[0017] Figure 2 This is a second-view diagram of Example 1;

[0018] Figure 3 This is a third-view diagram of Example 1;

[0019] Figure 4 This is a fourth-view diagram of Example 1;

[0020] Figure 5 This is a schematic diagram of Example 2.

[0021] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Mounting body; 3. Receiving cavity; 31. First sliding surface; 32. Second sliding surface; 4. Limiting port; 5. First snap-fit ​​groove; 6. Second snap-fit ​​groove; 7. Groove; 8. Snap-fit ​​part. Detailed Implementation

[0022] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0023] Example 1: Refer to Figure 1-4 The present invention discloses an invisible connector comprising a housing 1 and a mounting body 2 fixedly connected to the housing 1. The housing 1 has a receiving cavity 3 along a first direction, and one end of the receiving cavity 3 opens into the side wall of the housing 1. A limiting port 4 communicating with the receiving cavity 3 is provided along a second direction, and the limiting port 4 penetrates the outer wall of the housing 1. The width of the limiting port 4 is less than the width of the receiving cavity 3. After the end of the main body of the male component (not shown in the figure) enters the receiving cavity 3 through the opening of the receiving cavity 3, the limiting port 4 locks the end of the male component, preventing the male component from being pulled out of the limiting port 4. A snap-fit ​​groove for connecting plates is formed between the housing 1 and the mounting body 2. The snap-fit ​​groove is connected to a pre-set snap-fit ​​block in the plate. The first direction is perpendicular to the axis of the male component, and the second direction is perpendicular to the first direction. In use, the connector is fixedly connected to the side of the plate (not shown in the figure), and the limiting port 4 is on the side of the plate. The male component installed on another plate is installed by having its end snapped into the receiving cavity 3 through the opening of the receiving cavity 3, thus completing the installation. The installation is convenient.

[0024] Specifically, the mounting body 2 is connected to the housing 1 via a connector. The width of the connector along a third direction is less than that of the mounting body 2, forming a first snap-fit ​​groove 5 on both sides of the connector. The plate is provided with snap-fit ​​blocks that fit the first snap-fit ​​groove 5. The snap-fit ​​blocks have elastic deformation capability. When installing the connector, the mounting body 2 is passed through the middle of the two snap-fit ​​blocks, and the snap-fit ​​blocks are placed against both sides of the mounting body 2. The connector is pressed down forcefully, causing the snap-fit ​​blocks on both sides to deform. The mounting body 2 passes through the two snap-fit ​​blocks until the two snap-fit ​​blocks are engaged in the snap-fit ​​groove, thus completing the installation of the connector. The installation is convenient and quick.

[0025] Specifically, the connector, housing 1, and mounting body 2 form a second snap-fit ​​groove 6 in the fourth direction, that is, the connector has three snap-fit ​​grooves, which improves the connection stability between the connector and the plate.

[0026] Specifically, a clearance groove is provided on the outside of the limiting port 4 to facilitate the connection of the male component. The width of the clearance groove is greater than the width of the limiting port 4. The diameter of the part of the male component outside the limiting port 4 is adapted to the clearance groove, that is, the diameter of the main body of the male component is adapted to the clearance groove, the diameter of the end is adapted to the receiving cavity 3, and the diameter of the neck is adapted to the limiting port 4. When the male component is inserted into the receiving cavity 3, the neck is also inserted into the limiting port 4, making the connection between the connector and the plate more tight.

[0027] Specifically, the receiving cavity 3 includes a first end and a second end arranged along a first direction. The first end is used to receive the male component, and a first sliding surface 31 is provided on one side of the second end. When installing the male component, the end of the male component can be inserted into the receiving cavity 3 along the first sliding surface 31. The arrangement of the first sliding surface 31 makes the opening of the receiving cavity 3 larger, which facilitates the installation of the male component. In a preferred embodiment, a second sliding surface 32 is provided on the other side of the second end to further expand the opening of the receiving cavity 3.

[0028] Specifically, a groove 7 is provided on the side of the mounting body 2 away from the housing 1, which can reduce the weight of the connector. In a preferred embodiment, the direction of the groove 7 is parallel to the first direction, which can reduce the weight of the connector to the greatest extent.

[0029] Example 2: Refer to Figure 5 Unlike embodiment 1, the connector also includes a snap-fit ​​part 8 that snaps into the first snap-fit ​​groove 5 and the second snap-fit ​​groove 6. The plate is provided with a snap-fit ​​block that is adapted to the snap-fit ​​part 8. When installing, the connector is pushed with force to squeeze and deform the snap-fit ​​block and pass through the snap-fit ​​block. Then the snap-fit ​​part 8 returns to its shape and snaps into the other side of the snap-fit ​​block, thus completing the installation of the connector.

[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A concealed connector, comprising a housing and a mounting body fixedly connected to the housing, the housing including a receiving cavity disposed along a first direction and a limiting opening penetrating one side outer wall of the housing along a second direction, the limiting opening communicating with the receiving cavity, the receiving cavity for accommodating a male component, and the limiting opening for restricting the movement of the male component along the second direction, characterized in that, A snap-fit ​​groove for connecting the plates is formed between the housing and the mounting body.

2. The invisible connector according to claim 1, characterized in that, The mounting body is connected to the housing via a connector. The width of the connector along a third direction is smaller than that of the mounting body, so that a first snap-fit ​​groove is formed on both sides of the connector.

3. The invisible connector according to claim 2, characterized in that, The connector, housing, and mounting body form a second snap-fit ​​groove in the fourth direction.

4. The invisible connector according to claim 3, characterized in that, The concealed connector also includes a snap-fit ​​part, which snaps into the first snap-fit ​​groove and the second snap-fit ​​groove, for fixing the connector to the plate.

5. The invisible connector according to claim 1, characterized in that, The limiting port is provided with a clearance groove on the outside for connecting with the male parts.

6. The invisible connector according to claim 1, characterized in that, The accommodating cavity includes a first end and a second end arranged along a first direction. The first end is used to accommodate the male component, and a first sliding surface is provided on one side of the second end.

7. The invisible connector according to claim 6, characterized in that, A second sliding surface is provided on the other side of the second end.

8. The invisible connector according to claim 1, characterized in that, A groove is provided on the side of the mounting body away from the housing.

9. The invisible connector according to claim 8, characterized in that, The axis of the groove is parallel to the first direction.