Single-sided connecting piece capable of inhibiting slipping

Abstract

The utility model provides a single-sided connecting piece capable of inhibiting slipping, which comprises a deformation screw sleeve, a pulling nail and a nut, the deformation screw sleeve and the nut are abutted and coaxial, the deformation screw sleeve and the nut are positioned on the same side surface of a mounting plate, and the end surface, far away from the nut, of the deformation screw sleeve is abutted with the mounting plate; the pulling nail penetrates through the mounting plate, the threaded sleeve and the nut and is fixedly connected with the nut, the deformed threaded sleeve is deformed by pulling the pulling nail to form a large base angle, and riveting of the connecting piece to the mounting plate is achieved. The single-face connecting bolt has the advantages that slipping is effectively prevented during riveting installation, and the effect of installing and riveting of the single-face connecting bolt is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and in particular relates to a single-sided connecting piece capable of suppressing slippage. Background Art

[0002] High-end equipment such as aerospace usually has a compact structural design, so it faces the challenge of small space in connection and installation. Traditional double-sided fasteners, such as bolts and nuts, often have difficulty meeting installation requirements in these small spaces. Therefore, single-sided fasteners, such as blind rivets, are often selected. However, the strength of blind rivets is currently unable to replace traditional bolts and nuts, it is difficult to form a large foot to ensure preload, and the bottom angle material is not as good as the tensile, fatigue, shear, and locking performance of traditional bolts and nuts; at the same time, during riveting installation, the rivet body of the blind rivet is easy to slip with the installation surface, affecting the fastening performance. Utility Model Content

[0003] In view of this, the utility model aims to provide a single-sided connector that suppresses slipping, so as to effectively prevent slipping during riveting installation and achieve the riveting effect of single-sided connecting bolt installation.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A single-sided connector that inhibits slippage.

[0006] Further, it includes a mounting plate, including a deformable screw sleeve, a draw nail, and a nut, the deformable screw sleeve abuts against the nut and is coaxial, the deformable screw sleeve and the nut are located on the same side of the mounting plate, and the end face of the deformable screw sleeve away from the nut abuts against the mounting plate;

[0007] The draw nail passes through the mounting plate, the screw sleeve and the nut and is fixedly connected with the nut. The deformed screw sleeve is deformed to form a large bottom angle by drawing the draw nail, thereby realizing the riveting of the connecting piece to the mounting plate.

[0008] Furthermore, the nut is provided with an internal thread, one end of the pull-out nail is provided with an external thread, and the nut and the pull-out nail are fixedly connected via the internal thread and the external thread.

[0009] Furthermore, a deformation cavity and a fastening cavity are provided inside the deformable screw sleeve. The deformation cavity and the fastening cavity are both cylindrical and coaxial with the deformable screw sleeve. The deformation cavity and the fastening cavity are adjacent to and cooperate to pass through the deformable screw sleeve. The end face of the deformation cavity abuts against the side face of the mounting plate, and when the nail is pulled out, the deformation cavity is deformed to form a bottom angle.

[0010] Furthermore, the diameter of the deformation cavity is greater than the diameter of the fastening cavity.

[0011] Furthermore, a first transmission tooth is provided on the end surface of the deformable screw sleeve fastening cavity, and a second transmission tooth is provided on one end surface of the nut. The first transmission tooth is meshedly connected with the second transmission tooth to achieve one-way locking between the deformable screw sleeve and the nut.

[0012] Furthermore, the outer diameter of the first transmission tooth is greater than 9 mm, the fastening cavity is divided into a first cavity and a second cavity, the second cavity is located between the first cavity and the deformation cavity, the diameter of the first cavity is greater than that of the second cavity, and is used to strengthen the fastening cavity.

[0013] Furthermore, the tooth width of the second transmission tooth is smaller than that of the first transmission tooth.

[0014] Furthermore, a riveting method for a single-sided connector includes:

[0015] T1. Engage the first transmission tooth with the second transmission tooth to lock the deformed screw sleeve and the nut in one direction, and pass the pull-out nail through the deformed screw sleeve and the nut, so that the internal thread of the nut is connected with the external thread of the pull-out nail;

[0016] T2, pass the pull nail through the mounting plate, so that the end surface of the deformation cavity of the deformed screw sleeve abuts against the mounting plate;

[0017] T3, pull out the nail, the deformed screw sleeve and the nut remain relatively still, and the end surface of the deformation cavity is deformed to form a large bottom angle;

[0018] T4. Tighten the nut to enhance the locking ability of the single-sided connector.

[0019] Compared with the prior art, the one-sided connector and riveting method thereof for preventing slipping described in the utility model have the following beneficial effects:

[0020] (1) The one-sided connector for preventing slipping described in the utility model uses a deformable screw sleeve and a nut with end face transmission teeth, which can effectively prevent slipping. During the installation and riveting process, the nut and the deformable screw sleeve remain relatively still;

[0021] (2) The one-sided connector for preventing slipping described in the utility model is selected to be a deformable screw sleeve material that can be plastically deformed at room temperature, the nut is made of titanium alloy, and the pull nail is made of titanium alloy, so as to achieve tensile, fatigue, shear, locking and other performances to achieve a combination of high-lock bolts and high-lock nuts;

[0022] (3) The riveting method described in the utility model effectively prevents the single-sided connecting member and the mounting plate surface from slipping, and can further enhance the locking ability of the locking nut after the riveting is completed, thereby achieving continuous locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of a connection diagram of a single-sided connector according to an embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of three views (d≤9mm) of the deformed screw sleeve described in the embodiment of the utility model;

[0026] Figure 3 It is a schematic diagram of three views (d>9mm) of the deformed screw sleeve described in the embodiment of the utility model;

[0027] Figure 4 This is a three-view schematic diagram of the nut described in an embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1-deformation screw sleeve; 101-bottom angle; 102-deformation cavity; 103-fastening cavity; 104-first transmission tooth; 2-nut; 201-internal thread; 202-second transmission tooth; 3-pin removal; 301-external thread; 4-mounting plate. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] The present application provides a deformable screw sleeve 1 and a nut 2 with end face transmission teeth for use on a blind rivet. The contact parts of the two sub-parts of the deformable screw sleeve 1 and the nut 2 are respectively provided with an end face transmission tooth structure, which effectively prevents slipping during riveting installation, ensures the relative stillness of the two, and realizes the function of riveting installation of a single-sided connecting bolt.

[0033] like Figure 1 As shown, a single-sided connector that inhibits slipping includes a deformable screw sleeve 1, a pull-out nail 3, and a nut 2. The deformable screw sleeve 1 is in contact with the nut 2 and is coaxial. The deformable screw sleeve 1 and the nut 2 are located on the same side of the mounting plate 4, and the end face of the deformable screw sleeve 1 away from the nut 2 is in contact with the mounting plate 4. The pull-out nail 3 passes through the mounting plate 4, the screw sleeve, and the nut 2, and is fixedly connected to the nut 2. By pulling the pull-out nail 3, the deformable screw sleeve 1 is deformed to form a large bottom angle 101, thereby realizing the riveting of the connector to the mounting plate 4. In order to ensure that the deformable screw sleeve 1 and the nut 2 do not slip during riveting, as shown in FIG. Figure 4The nut 2 shown is provided with an internal thread 201, and one end of the pull-out nail 3 is provided with an external thread 301. The nut 2 and the pull-out nail 3 are fixedly connected through the internal thread 201 and the external thread 301, thereby preventing the deformed screw sleeve 1, the pull-out nail 3 and the nut 2 from axial rotation and slipping during riveting.

[0034] Furthermore, the deformable screw sleeve 1 is provided with a deformable cavity 102 and a fastening cavity 103 inside. The deformable cavity 102 and the fastening cavity 103 are both cylindrical and coaxial with the deformable screw sleeve 1. The deformable cavity 102 and the fastening cavity 103 are adjacent to each other and cooperate to penetrate the deformable screw sleeve 1. The end face of the deformable cavity 102 abuts against the side face of the mounting plate 4. When the nail 3 is pulled out, the deformable cavity 102 is deformed to form a bottom angle 101. Figure 2 As shown, it is necessary that the diameter of the deformation cavity 102 is larger than the diameter of the fastening cavity 103, so as to control the deformation of the end of the deformation screw sleeve 1 in contact with the mounting plate 4 to form a large bottom angle 101 during riveting.

[0035] Specifically, a first transmission tooth 104 is provided on the end surface of the fastening cavity 103 of the deformable screw sleeve 1, and a second transmission tooth 202 is provided on one end surface of the nut 2. The first transmission tooth 104 is meshed with the second transmission tooth 202 to achieve one-way locking between the deformable screw sleeve 1 and the nut 2. The first transmission tooth 104 and the second transmission tooth 202 may not be completely symmetrical, but the tooth width of the second transmission tooth 202 is smaller than that of the first transmission tooth 104.

[0036] Optionally, the first transmission tooth 104 and the second transmission tooth 202 meet the following settings: the tooth profile angle is 90°, the maximum arc of the tooth bottom is 0.1mm, the maximum arc of the tooth top is 0.1mm, the outer diameter d≤9mm, the tooth width is preferably about 0.6mm, the outer diameter d>9mm, the tooth width is preferably about 1.0mm, and the tooth height is determined by the tooth width and the tooth profile angle. The first transmission tooth 104 has an external chamfer of 30° to 45°, and can be formed by rolling or turning when the thickest wall section of the deformed screw sleeve 1 (the wall thickness before the nut 2 is processed with threads) is ≤3mm, and the turning process is used when the thickest wall section of the deformed screw sleeve 1 (the wall thickness before the nut 2 is processed with threads) is >3mm.

[0037] Optional, such as Figure 3 As shown, when the outer diameter of the first transmission tooth 104 is greater than 9 mm, the fastening cavity 103 is divided into a first cavity and a second cavity. The second cavity is located between the first cavity and the deformation cavity 102 . The diameter of the first cavity is greater than that of the second cavity, and is used to strengthen the fastening cavity 103 .

[0038] Optionally, a material capable of plastic deformation at room temperature is selected as the material of the deformable screw sleeve 1, and the electrode potential of the material is close to that of graphite, so as to prevent corrosion when used for composite material connection; the nut 2 is made of titanium alloy, and the pull nail 3 is made of titanium alloy.

[0039] A riveting method for a single-sided connector for preventing slippage, comprising:

[0040] T1, meshing the first transmission tooth 104 with the second transmission tooth 202, so that the deformed screw sleeve 1 and the nut 2 are locked in one direction, and the pull-out nail 3 passes through the deformed screw sleeve 1 and the nut 2, and the internal thread 201 of the nut 2 is connected with the external thread 301 of the pull-out nail 3;

[0041] T2, pass the pull-out nail 3 through the mounting plate 4, so that the end surface of the deformation cavity of the deformable screw sleeve 1 abuts against the mounting plate 4;

[0042] T3, pull out the nail 3, the deformed screw sleeve 1 and the nut 2 remain relatively still, and the end surface of the deformation cavity is deformed to form a large bottom angle 101;

[0043] T4. Tighten nut 2 to enhance the locking ability of the single-sided connector.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A single-sided connector for preventing slippage, comprising a mounting plate (4), characterized in that: The deformable screw sleeve (1), a draw nail (3), and a nut (2); the deformable screw sleeve (1) and the nut (2) are in contact with each other and are coaxial; the deformable screw sleeve (1) and the nut (2) are located on the same side of a mounting plate (4); and the end face of the deformable screw sleeve (1) away from the nut (2) is in contact with the mounting plate (4); The pull-out nail (3) passes through the mounting plate (4), the screw sleeve, and the nut (2) and is fixedly connected to the nut (2). By pulling the pull-out nail (3), the deformed screw sleeve (1) is deformed to form a large bottom angle (101), thereby achieving riveting of the connecting piece to the mounting plate (4).

2. A single-sided connector for preventing slippage according to claim 1, characterized in that: The nut (2) is provided with an internal thread (201), one end of the pull-out pin (3) is provided with an external thread (301), and the nut (2) and the pull-out pin (3) are fixedly connected via the internal thread (201) and the external thread (301).

3. The one-sided connector for preventing slippage according to claim 2, characterized in that: The deformable screw sleeve (1) is provided with a deforming cavity (102) and a fastening cavity (103) inside. The deforming cavity (102) and the fastening cavity (103) are both cylindrical and coaxial with the deformable screw sleeve (1). The deforming cavity (102) and the fastening cavity (103) are adjacent to and cooperate with each other to penetrate the deformable screw sleeve (1). The end face of the deforming cavity (102) abuts against the side face of the mounting plate (4). When the pulling nail (3) is pulled, the deforming cavity (102) is deformed to form a bottom angle (101).

4. The one-sided connector for preventing slippage according to claim 3, characterized in that: The diameter of the deformation cavity (102) is greater than the diameter of the fastening cavity (103).

5. The one-sided connector for preventing slippage according to claim 3, characterized in that: A first transmission tooth (104) is provided on the end surface of the fastening cavity (103) of the deformable screw sleeve (1), and a second transmission tooth (202) is provided on one end surface of the nut (2). The first transmission tooth (104) is meshedly connected with the second transmission tooth (202) to achieve one-way locking between the deformable screw sleeve (1) and the nut (2).

6. The one-sided connector for preventing slippage according to claim 5, characterized in that: The outer diameter of the first transmission tooth (104) is greater than 9 mm. The fastening cavity (103) is divided into a first cavity and a second cavity. The second cavity is located between the first cavity and the deformation cavity (102). The diameter of the first cavity is greater than that of the second cavity, and is used to strengthen the fastening cavity (103).

7. The one-sided connector for preventing slippage according to claim 5, characterized in that: The tooth width of the second transmission tooth (202) is smaller than that of the first transmission tooth (104).

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