Round iron sleeve structure of invisible connecting key

Abstract

The utility model discloses a round iron sleeve structure of an invisible connecting key, which belongs to the field of furniture manufacturing and comprises a round iron sleeve main body, a through hole is arranged on the round iron sleeve main body, an elastic limiting rod is arranged at the end part of the round iron sleeve main body, an elastic clamping rod is arranged at the end part of the round iron sleeve main body, and an abutting block is arranged at the tail end of the elastic clamping rod. A clamping protrusion is installed on the inner wall of the through hole in the round iron sleeve body. According to the round iron sleeve, the clamping protrusions facing the inner side are arranged on the round iron sleeve body, and after the connecting rod is inserted into the round iron sleeve, the clamping protrusions abut against the outer wall of the connecting rod, so that a direct fixing effect exists between the round iron sleeve body and the connecting rod, and the stability after the connecting rod and the round iron sleeve body are connected is ensured; the invisible connecting key is simple in structure, the elastic limiting rod and the non-return block are matched for use, the use stability of the whole invisible connecting key can be improved, the situation of loosening and falling is avoided, the circular groove is formed in the clamping protrusion, it is guaranteed that the thickness of the circular iron sleeve body is consistent with that of the clamping protrusion, and the use effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of furniture manufacturing, and in particular to a round iron sleeve structure for an invisible connecting key. Background Technology

[0002] Wardrobes are a type of furniture, generally assembled from wooden boards. During wardrobe manufacturing, to enhance the furniture's aesthetics, concealed connecting keys are used to join the wooden boards, achieving a seamless finish. These concealed connecting keys mainly consist of a round iron sleeve structure and a connecting rod structure. The round iron sleeve structure is embedded in a groove in the wooden board, working in conjunction with the connecting rod structure to achieve a seamless connection.

[0003] When the round iron sleeve structure is used in conjunction with the connecting rod structure, after the connecting rod is inserted into the round iron sleeve, the end of the push rod pushes the ball to move, causing the clamping rod to open and press against the groove wall. The check block at the end of the elastic limiting rod prevents the end of the connecting rod from returning, thus achieving a clamping and fixing effect. However, in the existing round iron sleeve structure, the main body of the round iron sleeve and the connecting rod are not directly clamped together; only the check block is used for limiting. The connection stability is poor, and because the connecting rod and the main body of the round iron sleeve are not directly fixed, loosening and falling off are very likely to occur, resulting in mediocre performance. Utility Model Content

[0004] The main objective of this invention is to provide a round iron sleeve structure for an invisible connecting key, which can effectively solve the problems in the background art.

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

[0006] A circular iron sleeve structure for an invisible connecting key includes a circular iron sleeve body, a through hole on the circular iron sleeve body, an elastic limiting rod at one end of the circular iron sleeve body, an elastic snap-fit ​​rod at one end of the circular iron sleeve body, and a clamping block at the end of the elastic snap-fit ​​rod. A clamping protrusion is installed on the inner wall of the through hole on the circular iron sleeve body, and a circular groove is provided on the outer wall of the circular iron sleeve body.

[0007] Preferably, the round iron sleeve body is provided with an expansion joint, and the lower end of the round iron sleeve body is provided with an assembly notch, which is distributed in a ring array on the round iron sleeve body.

[0008] Preferably, the two elastic limiting rods are symmetrically arranged on the round iron sleeve body, and the ends of the elastic limiting rods are fixed with check blocks.

[0009] Preferably, the two elastic locking rods are symmetrically arranged on the round iron sleeve body, and the elastic locking rods are fixedly connected to the round iron sleeve body.

[0010] Preferably, the elastic limiting rod and the elastic snap-fit ​​rod are arranged in a ring-shaped staggered pattern on the main body of the round iron sleeve.

[0011] Compared with the prior art, this utility model has the following beneficial effects: The round iron sleeve structure of the invisible connecting key has an inwardly facing locking protrusion on the main body of the round iron sleeve. When the connecting rod is inserted into the inside of the round iron sleeve, the locking protrusion abuts against the outer wall of the connecting rod, so that there is a direct fixing effect between the main body of the round iron sleeve and the connecting rod, ensuring the stability of the connection between the connecting rod and the main body of the round iron sleeve. When used in conjunction with the elastic limit rod and the anti-return block, the stability of the entire invisible connecting key can be increased, and loosening and falling off can be avoided. A round groove is provided at the locking protrusion to ensure that the thickness of the main body of the round iron sleeve and the locking protrusion are consistent, thus ensuring the effect of use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the adjustment structure of this utility model.

[0014] In the diagram: 1. Round iron sleeve body; 2. Through hole; 3. Elastic limit rod; 4. Check block; 5. Elastic snap rod; 6. Abutting block; 7. Expansion joint; 8. Clamping protrusion; 9. Round groove; 10. Assembly notch. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] like Figures 1-2 As shown, a circular iron sleeve structure for an invisible connecting key includes a circular iron sleeve body 1, a through hole 2 on the circular iron sleeve body 1, an elastic limiting rod 3 at the end of the circular iron sleeve body 1, an elastic snap-fit ​​rod 5 at the end of the circular iron sleeve body 1, and a clamping block 6 at the end of the elastic snap-fit ​​rod 5. A clamping protrusion 8 is installed on the inner wall of the through hole 2 on the circular iron sleeve body 1, and a circular groove 9 is provided on the outer wall of the circular iron sleeve body 1.

[0017] An expansion joint 7 is provided on the main body 1 of the round iron sleeve, and an assembly notch 10 is provided at the lower end of the main body 1 of the round iron sleeve. The assembly notches 10 are distributed in a ring array on the main body 1 of the round iron sleeve. Two elastic limiting rods 3 are symmetrically arranged on the main body 1 of the round iron sleeve, and a check block 4 is fixed to the end of the elastic limiting rod 3. Two elastic snap-fit ​​rods 5 are symmetrically arranged on the main body 1 of the round iron sleeve, and the elastic snap-fit ​​rods 5 are fixedly connected to the main body 1 of the round iron sleeve. The elastic limiting rods 3 and the elastic snap-fit ​​rods 5 are distributed in a ring-shaped staggered pattern on the main body 1 of the round iron sleeve.

[0018] When processing wardrobes, seamless splicing of wooden boards is achieved using invisible connecting keys. First, the connecting rod part of the invisible connecting key is installed to the end of one wooden board. A slot is made on another wooden board, and the round iron sleeve structure is installed into the slot. During this process, the main body 1 of the round iron sleeve can shrink or expand through the expansion joint 7 to ensure that the entire round iron sleeve structure can be properly set into the slot on the template. Then, the cylinder is placed into the through hole 2 on the main body 1 of the round iron sleeve. At this time, the elastic limiting rod 3 and the elastic locking rod 5 are in the initial state, the two check blocks 4 are close together, and the two clamping blocks 6 are close together. The connecting rod is set onto another wooden board, and then the splicing operation is carried out. During the splicing process, adjacent wooden boards are connected together, and the connecting rod is inserted into the round iron sleeve structure. The top end of the connecting rod pushes the ball to move until the top end of the connecting rod moves to the elastic limiting rod 3. The top end of the connecting rod is limited to retraction by the check block 4 at the end of the elastic limiting rod 3. At this time, the ball moves to the end position of the elastic locking rod 5. Under the action of the ball, the elastic locking rod 5 opens and abuts against the groove wall of the slot with the clamping block 6, thereby achieving the effect of fixed connection.

[0019] During the splicing process, the locking protrusion 8 inside the round iron sleeve body 1 abuts against the outer wall of the connecting rod, thus establishing a direct connection between the round iron sleeve body 1 and the connecting rod. This increases the stability of the connecting rod and the round iron sleeve structure after splicing, preventing loosening and detachment, ensuring the stability of the wood splicing, and providing excellent performance. At the same time, due to the setting of the round groove 9, the locking protrusion 8 can undergo slight deformation during the splicing process, ensuring the normal connection of the connecting rod.

[0020] It should be noted that an inwardly facing locking protrusion 8 is provided on the main body 1 of the round iron sleeve. When the connecting rod is inserted into the inside of the round iron sleeve, the locking protrusion 8 abuts against the outer wall of the connecting rod, so that there is a direct fixing effect between the main body 1 of the round iron sleeve and the connecting rod, ensuring the stability of the connecting rod after it is connected to the main body 1 of the round iron sleeve. When used in conjunction with the elastic limit rod 3 and the check block 4, the stability of the entire invisible connecting key can be increased, and loosening and falling off can be avoided. A circular groove 9 is provided at the locking protrusion 8 to ensure that the thickness of the main body 1 of the round iron sleeve and the locking protrusion 8 are consistent, thus ensuring the effect of use.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A circular iron sleeve structure for an invisible connecting key, comprising a circular iron sleeve body (1), wherein the circular iron sleeve body (1) is provided with a through hole (2), and an elastic limiting rod (3) is provided at the end of the circular iron sleeve body (1), an elastic snap-fit ​​rod (5) is provided at the end of the circular iron sleeve body (1), and a clamping block (6) is provided at the end of the elastic snap-fit ​​rod (5), characterized in that: The inner wall of the through hole (2) on the main body (1) of the round iron sleeve is equipped with a clamping protrusion (8), and the outer wall of the main body (1) of the round iron sleeve is provided with a round groove (9).

2. The round iron sleeve structure for an invisible connecting key according to claim 1, characterized in that: An expansion joint (7) is provided on the main body (1) of the round iron sleeve, and an assembly notch (10) is provided at the lower end of the main body (1). The assembly notch (10) is distributed in a ring array on the main body (1).

3. The round iron sleeve structure for an invisible connecting key according to claim 2, characterized in that: Two elastic limiting rods (3) are symmetrically arranged on the round iron sleeve body (1), and the ends of the elastic limiting rods (3) are fixed with check blocks (4).

4. The round iron sleeve structure for an invisible connecting key according to claim 3, characterized in that: The two elastic locking rods (5) are symmetrically arranged on the round iron sleeve body (1), and the elastic locking rods (5) are fixedly connected to the round iron sleeve body (1).

5. The round iron sleeve structure for an invisible connecting key according to claim 4, characterized in that: The elastic limiting rod (3) and the elastic snap-fit ​​rod (5) are arranged in a ring-shaped staggered pattern on the main body (1) of the round iron sleeve.

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