Expansion type riveting nut

Abstract

The utility model relates to the related field of riveting nuts, in particular to an expansion type riveting nut which comprises a device body, the device body comprises an outer sleeve, an outer gasket, an outer nut, a threaded rod, an external connection assembly and a limiting assembly, the threaded rod is inserted into the outer sleeve in a penetrating mode, and the upper half portion of the threaded rod is in threaded connection with the outer sleeve; the upper end of the threaded rod is sleeved with the outer gasket, the outer nut is connected to the threaded rod in a threaded mode and located at the upper end of the outer gasket, an inner hexagonal hole is formed in the top of the threaded rod, the external connection assembly is installed on the inner hexagonal hole, the extrusion head is arranged at the bottom of the threaded rod, and the limiting assembly is located at the upper end of the extrusion head. The external connection assembly comprises an outer clamping head and an outer hexagonal head, the limiting assembly comprises a limiting plate and a limiting groove, rotation limiting can be conveniently conducted on the threaded rod, the problem that the installation efficiency is low due to synchronous rotation between the threaded rod and the outer nut is solved, expansion riveting of the outer sleeve can be achieved, the riveting strength is high, and the stability is good.

Description

Technical Field

[0001] This utility model relates to the field of riveting nuts, and in particular to an expansion riveting nut. Background Technology

[0002] Expansion bolts are used to fix screws by using a tapered angle to induce expansion and generate frictional gripping force. One end of the screw is threaded, and the other end is tapered. It is encased in a steel cylinder with several slits on one half. The entire assembly is inserted into a pre-drilled hole in the wall, and then the nut is tightened. The nut pulls the screw outward, drawing the tapered end into the steel cylinder and causing it to expand.

[0003] The utility model patent with publication number CN 216009170 U in the prior art proposes an expansion type riveting nut, which has the function of increasing friction by providing a flat washer, which can increase the contact area between the fixing body and the sleeve. By providing a washer, it can increase the friction between the riveting nut and the connecting part, further improving the fastening effect.

[0004] However, the expansion bolts are limited in rotation by using a combination of protrusions and grooves to control the rotation of the threaded rod. The addition of grooves and protrusions increases the manufacturing difficulty of the expansion bolts and makes the installation of the sleeve and threaded rod inconvenient, affecting the efficiency of use. A single protrusion is also not stable enough and it is difficult to control the rotation of the threaded rod. At the same time, the riveting effect is achieved by supporting the opening, but the riveting strength of a single piece is not enough, and it is more prone to bending and loosening. Therefore, we need to upgrade and modify the existing technology to overcome its problems and shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide an expansion-type riveting nut to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Design an expansion-type riveting nut, including a device body. The device body includes an outer sleeve, an outer washer, an outer nut, a threaded rod, an external connecting component, and a limiting component. The threaded rod is inserted through the outer sleeve and its upper half is screwed to the outer sleeve. The upper end of the threaded rod is fitted with an outer washer. The outer nut is screwed onto the threaded rod and located above the outer washer. The top of the threaded rod is provided with an internal hexagonal hole. The external connecting component is installed in the internal hexagonal hole. The bottom of the threaded rod is provided with a pressing head. The limiting component is located at the upper end of the pressing head.

[0008] Furthermore, the external component includes an external card head and an external hexagonal head, with the external hexagonal head fixedly disposed at the lower end of the external card head.

[0009] Further, the limiting assembly comprises six limiting plates and six limiting grooves, and the outer surface of the limiting plate is provided with a friction strip, and the outer side of the limiting groove is provided with an outer check ring.

[0010] Further, the outer hexagonal head is inserted into the inner hexagonal hole, and the outer clamping head is located on the upper end of the threaded rod.

[0011] Further, the limiting plate is arranged in an annular array and is fixedly connected to the bottom of the outer sleeve, and the limiting groove and the outer check ring are arranged in an annular array and are arranged on the extrusion head.

[0012] Further, the limiting groove and the outer check ring correspond to the lower end of the limiting plate, and the middle position of the limiting plate is inclined outward.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The utility model discloses a threaded rod, an extrusion head, an inner hexagonal hole, an external assembly, an outer clamping head and an outer hexagonal head are arranged in the device, the outer clamping head is installed through the cooperation of the outer hexagonal head and the inner hexagonal hole, the outer clamping head is connected with the threaded rod, the threaded rod is conveniently rotated and limited, the synchronous rotation between the threaded rod and the outer nut is avoided, the installation efficiency is improved, and the practicality and installation efficiency of the device are improved.

[0015] 2. The utility model discloses an extrusion head, a limiting assembly, a limiting plate, a friction strip, a limiting groove and an outer check ring are arranged in the device, the limiting plate is extruded and limited through the cooperation of the limiting groove and the outer check ring, the limiting plate is folded and the folding point is outwardly protruding, the expansion riveting of the outer sleeve can be realized, the riveting strength is high and the stability is good, the problems of low outward expansion strength and easy loosening and bending are avoided, and the reliability of the device is improved.

[0016] The specific embodiments of the utility model are disclosed in detail in the following description and drawings, and the principle of the utility model can be adopted. It should be understood that the embodiments of the utility model are not limited in scope. The embodiments of the utility model include many changes, modifications and equivalents within the spirit and clauses of the appended claims. DRAWINGS

[0017] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0018] Figure 1 It is a whole structure schematic view of the utility model discloses an expansion riveting nut;

[0019] Figure 2The utility model provides a working structure schematic diagram of an expansion riveting nut,

[0020] Figure 3 The utility model provides a whole structure exploded view of an expansion riveting nut,

[0021] Figure 4 The utility model provides a thread rod structure exploded view of an expansion riveting nut.

[0022] In the figure: 1, device body; 2, outer sleeve; 3, outer gasket; 4, outer nut; 5, threaded rod; 51, extrusion head; 52, internal hexagonal hole; 6, external assembly; 61, outer clamp head; 62, outer hexagonal head; 7, limiting assembly; 71, limiting plate; 72, friction strip; 73, limiting groove; 74, outer check ring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0024] As Figure 1 The utility model provides an expansion riveting nut, which comprises a device body 1, the device body 1 contains an outer sleeve 2, an outer gasket 3, an outer nut 4, a threaded rod 5, an external assembly 6 and a limiting assembly 7, the threaded rod 5 is inserted through the inside of the outer sleeve 2 and is screwed with the upper half of the outer sleeve 2, the outer gasket 3 is sleeved on the upper end of the threaded rod 5, the outer nut 4 is screwed on the threaded rod 5 and is located on the upper end of the outer gasket 3, the internal hexagonal hole 52 is arranged on the top of the threaded rod 5, the external assembly 6 is installed on the internal hexagonal hole 52, the extrusion head 51 is arranged on the bottom of the threaded rod 5, and the limiting assembly 7 is located on the upper end of the extrusion head 51.

[0025] Preferably, the external assembly 6 comprises an outer clamp head 61 and an outer hexagonal head 62, the outer hexagonal head 62 is fixedly arranged at the lower end of the outer clamp head 61, the outer hexagonal head 62 is correspondingly inserted into the internal hexagonal hole 52, and the outer clamp head 61 is located at the upper end of the threaded rod 5.

[0026] The outer clamp head 61 is connected to the top of the threaded rod 5 through the cooperation of the outer hexagonal head 62 and the internal hexagonal hole 52, the threaded rod 5 is conveniently rotated and limited through the outer clamp head 61, the threaded rod 5 is prevented from rotating with the outer nut 4, the threaded rod 5 is directly limited through the internal hexagonal hole 52, the threaded rod 5 is prevented from rotating with the outer nut 4, and the installation efficiency is improved.

[0027] Preferably, the limiting assembly 7 comprises limiting plates 71 and limiting grooves 73, the limiting plates 71 are provided with six groups and outer surfaces are provided with friction strips 72, the limiting grooves 73 are provided with six groups and outer sides are provided with outer retaining rings 74, the limiting plates 71 are arranged in an annular array and are fixedly connected at the bottom of the outer sleeve 2, the limiting grooves 73 and the outer retaining rings 74 are arranged in an annular array and are arranged on the extrusion head 51, the limiting grooves 73 and the outer retaining rings 74 correspond to the lower ends of the limiting plates 71, and the limiting plates 71 are inclined outward at the middle positions.

[0028] The limiting plates 71 are abutted at the bottoms by the limiting grooves 73, and the limiting plates 71 are limited and shielded by the outer retaining rings 74, so that the limiting plates 71 are extruded and folded, the limiting plates 71 can be folded and stretched outward, and the bottom of the outer sleeve 2 is expanded and limited, so that the installation stability of the outer sleeve 2 is maintained.

[0029] The use principle and use process of the utility model are as follows: when in use, first, the outer sleeve 2 is screwed and sleeved outside the threaded rod 5, the outer gasket 3 is sleeved on the threaded rod 5 and is placed at the top of the outer sleeve 2, the outer nut 4 is screwed on the threaded rod 5, the threaded rod 5 and the outer sleeve 2 are inserted into the pre-formed mounting hole, at this time, the outer clamp head 61 is installed on the inner hexagonal hole 52 through the outer hexagonal head 62, the threaded rod 5 is limited by the outer clamp head 61, so that the threaded rod 5 cannot rotate with the outer nut 4, then the outer nut 4 is rotated, the threaded rod 5 is driven to ascend by the outer nut 4 and gradually separates from the outer sleeve 2, at this time, the extrusion head 51 moves upward and makes the limiting grooves 73 abut against the lower ends of the limiting plates 71, the extrusion head 51 continuously ascends and drives the limiting plates 71 to move, the limiting plates 71 are folded and contracted and stretched outward under the action of the outer retaining rings 74, until the threaded rod 5 cannot move, at this time, the outer nut 4 is installed and fastened, the riveting strength is improved by the folded limiting plates 71, and the installation stability is improved.

[0030] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "installation", "provided with", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific situation.

[0031] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

Claims

1. An expansion-type riveting nut, characterized in that: The device includes a main body (1), which contains an outer sleeve (2), an outer gasket (3), an outer nut (4), a threaded rod (5), an external assembly (6), and a limiting assembly (7). The threaded rod (5) is inserted through the outer sleeve (2) and its upper half is screwed to the outer sleeve (2). The upper end of the threaded rod (5) is fitted with an outer gasket (3). The outer nut (4) is screwed onto the threaded rod (5) and located at the upper end of the outer gasket (3). The top of the threaded rod (5) is provided with an internal hexagonal hole (52). The external assembly (6) is installed on the internal hexagonal hole (52). The bottom of the threaded rod (5) is provided with a pressing head (51). The limiting assembly (7) is located at the upper end of the pressing head (51).

2. The expansion-type riveting nut according to claim 1, characterized in that: The external component (6) includes an external card head (61) and an external hexagonal head (62), with the external hexagonal head (62) fixedly disposed at the lower end of the external card head (61).

3. The expansion-type riveting nut according to claim 1, characterized in that: The limiting component (7) includes a limiting plate (71) and a limiting groove (73). The limiting plate (71) is provided with six sets and friction strips (72) are provided on its outer surface. The limiting groove (73) is provided with six sets and an outer retaining ring (74) is provided on its outer side.

4. The expansion-type riveting nut according to claim 2, characterized in that: The external hexagonal head (62) is inserted into the internal hexagonal hole (52), and the external snap head (61) is located at the upper end of the threaded rod (5).

5. An expansion-type riveting nut according to claim 3, characterized in that: The limiting plate (71) is arranged in a ring array and fixedly connected to the bottom of the outer sleeve (2). The limiting groove (73) and the outer retaining ring (74) are both arranged in a ring array and are set on the extrusion head (51).

6. An expansion-type riveting nut according to claim 5, characterized in that: The limiting groove (73) and the outer retaining ring (74) correspond to the lower end of the limiting plate (71), and the middle position of the limiting plate (71) is inclined to the outside.

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