Internal expansion fixed rivet

Abstract

The utility model relates to the field of rivets, and discloses an internal expansion fixed rivet which comprises a sleeve rod, the front face of the sleeve rod is movably connected with a movable block, the bottom of the movable block is fixedly connected with a sleeve pipe, the outer wall of the sleeve pipe is fixedly connected with an expansion rod, the inner wall of the sleeve pipe is fixedly connected with an inner screw rod, and the inner screw rod is fixedly connected with an outer screw rod. And the inner wall of the sleeve rod is movably connected with a core column. According to the internal expansion fixed rivet, the sleeve rod, the movable shaft, the movable block, the casing pipe, the expansion rod, the inner screw rod and the core column are arranged, so that the rivet has a good reinforcing effect, and the expansion rod can abut against the inner wall of a mounting hole by utilizing the depth degree of the core column when the rivet is mounted, so that the mounting stability of the rivet is ensured; and the problem that the rivet is loosened due to the fact that abutting cannot be achieved is avoided, so that it is guaranteed that the structures to be installed can be kept stable, structural separation caused by loosening is avoided, the installation difficulty is low, the provided reinforcing effect is good, and the use requirements of people are met.

Description

Technical Field

[0001] The utility model relates to the field of rivets, in particular to an internally expanding fixed rivet. Background Technique

[0002] A rivet is a nail-shaped object used to connect two parts with through holes and a cap at one end. In riveting, the parts to be riveted are connected by its own deformation or interference fit. There are many types of rivets and they are not restricted in form. Commonly used ones include R-type rivets, fan rivets, blind rivets, tree-shaped rivets, semi-circular head, flat head, semi-hollow rivets, solid rivets, countersunk head rivets, blind rivets, and hollow rivets. These usually connect the parts to be riveted by their own deformation. Generally, cold riveting is used for those less than 8 mm, and hot riveting is used for those larger than this size. However, there are exceptions. For example, the nameplate on some locks is riveted by the interference fit between the rivet and the hole in the lock body.

[0003] In view of the existing technology, the following problems exist:

[0004] In the existing technology, the reinforcement effect of the rivet is poor. There are certain deficiencies in the existing rivets during use and they need to be improved. First of all, it is not possible to tighten after the rivet is fixed, and the rivet is prone to looseness after being fixed. Secondly, it is not possible to limit and position during the installation of the rivet assembly, and the rivet assembly is prone to displacement and misalignment during installation. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the existing technology, the utility model provides an internally expanding fixed rivet, which has the advantages of good reinforcement effect and solves the problems in the above background technology.

[0007] (2) Technical Solutions

[0008] To achieve the above purpose of good reinforcement effect, the utility model provides the following technical solution: an internally expanding fixed rivet, including a sleeve rod, an activity block is movably connected to the front surface of the sleeve rod, a sleeve is fixedly connected to the bottom of the activity block, and an expansion rod is fixedly connected to the outer wall of the sleeve.

[0009] An internal screw rod is fixedly connected to the inner wall of the sleeve, and a core column is movably connected to the inner wall of the sleeve rod. This can make the rivet have a good reinforcement effect. When installing the rivet, the depth of penetration of the core column can be used to make the expansion rod abut against the inner wall of the installation hole, so as to ensure the installation stability of the rivet, avoid the problem of rivet loosening caused by the inability to abut, and ensure that the structures to be installed can remain stable and avoid structural separation caused by loosening. It not only has a low installation difficulty but also provides a good reinforcement effect, meeting people's usage requirements.

[0010] Preferably, a movable shaft is movably connected to the front surface of the movable block, and the sleeve rod is movably connected to the movable block through the movable shaft, and the movable shaft enables the connecting block to be adjusted at different angles.

[0011] Preferably, the number of the expansion rods is twenty, and every ten expansion rods form a group, and the two groups of expansion rods are symmetrically arranged with the vertical center line of the sleeve rod as the axis of symmetry, and the two groups of expansion rods can abut against the installation hole as the sleeve is expanded.

[0012] Preferably, a limiting plate is fixedly connected to the outer wall of the sleeve rod, and the limiting plate can prevent the sleeve from penetrating too deeply into the installation hole and affecting the installation convenience.

[0013] Preferably, an installation groove is provided on the inner wall of the sleeve rod, and the sleeve rod is movably connected to the core column through the installation groove, and the installation groove makes the disassembly and assembly of the core column extremely convenient and fast.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides an internally expandable fixed rivet, which has the following beneficial effects:

[0016] For this internally expandable fixed rivet, by providing the sleeve rod, the movable shaft, the movable block, the sleeve, the expansion rod, the inner screw rod and the core column, the rivet can have a good strengthening effect. When installing the rivet, the depth of penetration of the core column can be used to make the expansion rod abut against the inner wall of the installation hole, so as to ensure the installation stability of the rivet and avoid the problem of the rivet loosening due to the inability to abut. It not only has a low installation difficulty but also can provide a good strengthening effect, meeting the usage requirements of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front sectional view of the present utility model;

[0018] Figure 2 is a front view of the present utility model;

[0019] Figure 3 is the present utility model Figure 1 The enlarged view of the structure at A in.

[0020] In the figure: 1, sleeve rod; 2, limiting plate; 3, movable shaft; 4, movable block; 5, sleeve; 6, expansion rod; 7, inner screw rod; 8, core column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] A preferred embodiment of the internally expandable fixed rivet provided by the present utility model is as Figures 1 to 3 shown: An internally expandable fixed rivet includes a sleeve rod 1. A movable block 4 is movably connected to the front surface of the sleeve rod 1. A sleeve 5 is fixedly connected to the bottom of the movable block 4. An expansion rod 6 is fixedly connected to the outer wall of the sleeve 5.

[0024] An internal screw rod 7 is fixedly connected to the inner wall of the sleeve 5. A core column 8 is movably connected to the inner wall of the sleeve rod 1, which can make the rivet have a good reinforcement effect. When installing the rivet, the depth of penetration of the core column 8 can be used to make the expansion rod 6 abut against the inner wall of the installation hole, so as to ensure the installation stability of the rivet and avoid the problem of the rivet loosening due to the inability to abut. In this way, it is ensured that the structures to be installed can remain stable and avoid structural separation due to loosening. It not only has a low installation difficulty but also provides a good reinforcement effect, meeting the usage requirements of people.

[0025] In this embodiment, a movable shaft 3 is movably connected to the front surface of the movable block 4, and the sleeve rod 1 is movably connected to the movable block 4 through the movable shaft 3. The movable shaft 3 enables the connecting block 4 to be adjusted at different angles.

[0026] In this embodiment, the number of expansion rods 6 is twenty, and every ten expansion rods 6 form a group. The two groups of expansion rods 6 are symmetrically arranged with the vertical center line of the sleeve rod 1 as the axis of symmetry. The two groups of expansion rods 6 can abut against the installation hole as the sleeve 5 is expanded.

[0027] Embodiment 2

[0028] On the basis of Embodiment 1, a preferred embodiment of the internally expandable fixed rivet provided by the present utility model is as Figures 1 to 3 shown: A limiting plate 2 is fixedly connected to the outer wall of the sleeve rod 1. The limiting plate 2 can prevent the sleeve 1 from penetrating too deeply into the installation hole and affecting the installation convenience.

[0029] In this embodiment, an installation groove is provided on the inner wall of the sleeve rod 1, and the sleeve rod 1 is movably connected to the core column 8 through the installation groove. The installation groove makes the disassembly and assembly of the core column 8 extremely convenient and fast.

[0030] In use, the sleeve rod 1 and the sleeve 5 are nailed into the installation hole, and then the core column 8 is installed inside the sleeve rod 1 by rotation. As the core column 8 goes deeper, it drives the sleeve 5 through the inner screw rod 7 to move both sides in cooperation with the movable shafts 3 and the movable blocks 4, so that the expansion rod 6 is expanded and abuts against the inside of the installation hole, thus completing the installation.

[0031] In summary, this internal expansion fixed rivet can achieve the purpose of good reinforcement effect. When installing the rivet, the depth of the core column 8 can be used to make the expansion rod 6 abut against the inner wall of the installation hole, so as to ensure the installation stability of the rivet and avoid the problem of the rivet loosening caused by the inability to abut. In this way, it is ensured that the structures to be installed can remain stable and avoid structural separation caused by loosening. It not only has a low installation difficulty but also provides a good reinforcement effect, meeting the usage requirements of people.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An internally expanding fixed rivet, comprising a sleeve rod (1), characterized in that: A movable block (4) is movably connected to the front surface of the sleeve rod (1). A sleeve (5) is fixedly connected to the bottom of the movable block (4). An expansion rod (6) is fixedly connected to the outer wall of the sleeve (5). An inner screw rod (7) is fixedly connected to the inner wall of the sleeve (5). A core column (8) is movably connected to the inner wall of the sleeve rod (1).

2. The internally expanding fixed rivet according to claim 1, characterized in that: A movable shaft (3) is movably connected to the front surface of the movable block (4). The sleeve rod (1) is movably connected to the movable block (4) through the movable shaft (3).

3. The internal expansion fixed rivet according to claim 1, wherein: The number of the expansion rods (6) is twenty. Every ten expansion rods (6) form a group. The two groups of expansion rods (6) are symmetrically arranged with the vertical center line of the sleeve rod (1) as the axis of symmetry.

4. The internal expansion fixed rivet according to claim 1, characterized in that: A limiting plate (2) is fixedly connected to the outer wall of the sleeve rod (1).

5. A kind of internally expanding fixed rivet according to claim 1, characterized in that: An installation groove is arranged on the inner wall of the sleeve rod (1). The sleeve rod (1) is movably connected to the core column (8) through the installation groove.

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