Combined bolt with pointed-end trepanning structure

Abstract

The utility model discloses a combined bolt with a pointed-end trepanning structure, which relates to the technical field of bolts and comprises a drilling head. An outer cylinder is arranged on the outer side of the drilling head, a plurality of linkage rings are welded to the outer cylinder, and the linkage rings are arranged along the central axis of the outer cylinder in an annular array mode. The inner side of the linkage ring is movably connected with a linkage rod through a rotating shaft, a self-clamping piece is welded to the linkage rod, and then the self-clamping piece is arranged in an arc shape. The drilling head rotates along with the outer cylinder and is matched with the outer blade to grind and open a hole, so that the drilling head is convenient to install and use when no hole site exists, the outer cylinder rotates and can drive the self-clamping piece to move, and under the action that the self-clamping piece is matched and connected with the linkage plate, self-clamping can be achieved, and other locking pieces do not need to be connected.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of bolts, in particular to a combined bolt with a pointed opening structure. Background Art

[0002] Bolt: A mechanical part, a cylindrical threaded fastener that is matched with a nut. A type of fastener consisting of a head and a screw (a cylinder with external threads), which must be matched with a nut to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

[0003] Chinese utility model publication number CN 212155400 U discloses a double hexagonal bolt head bolt, comprising a bolt body, a first bolt head being fixed to the bolt body, a second bolt head being fixed to a side wall of the first bolt head;

[0004] When the above-mentioned double hexagonal bolt head bolt is used in a position without a hole, it is necessary to use other tools to make a hole before installation, which is more troublesome to install and use. For this reason, we provide a combined bolt with a pointed hole structure. By providing a drilling head and an outer blade, it can play a grinding role when rotating to make a hole, which is more convenient to use and effectively compensates for the above-mentioned problem. Utility Model Content

[0005] The utility model aims to provide a combined bolt with a pointed opening structure to solve the problems raised in the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A combined bolt with a pointed opening structure comprises a drilling head; an outer cylinder is arranged on the outside of the drilling head, a plurality of linkage rings are welded on the outer cylinder, and the plurality of linkage rings are arranged in a circular array along the central axis of the outer cylinder; a linkage rod is movably connected to the inner side of the linkage ring through a rotating shaft, a self-clamp is welded on the linkage rod, and the self-clamp is arranged in an arc shape.

[0008] As a further technical solution of the utility model, an outer blade is welded to one end of the outer cylinder close to the drilling head, and a plurality of outer blades are provided. Secondly, the plurality of outer blades are arranged in a circular array along the central axis of the drilling head.

[0009] As a further technical solution of the utility model, the drilling head is welded to the inner core rod, a fixing head is welded to the other end of the inner core rod, and the drilling head is connected to the outer cylinder through threads.

[0010] As a further technical solution of the utility model, one end of the self-card is movably connected to a linkage plate through a rotating shaft, and the linkage plate is movably connected to a support rod welded to a fixed head.

[0011] As a further technical solution of the utility model, the outer side of the outer cylinder is provided with an external thread which is threadably connected to a locking nut.

[0012] As a further technical solution of the utility model, one end of the drilling head away from the inner core rod is flush with one end of the outer blade away from the outer cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model has a drilling head that rotates with the outer cylinder and cooperates with the outer blade to grind and open a hole, thereby facilitating installation when there is no hole and being more convenient to use. The rotation of the outer cylinder can drive the self-clamp to move, and under the action of the self-clamp cooperating with the connecting linkage plate, self-clamping can be achieved, and there is no need to connect other locking parts. The utility model has a plurality of outer blades that have the same effect as the drill bit and play a grinding role, and it is more convenient and quick to drill a hole in cooperation with the drilling head. When the outer cylinder is rotated, the linkage ring drives the linkage rod to move, and one end of the self-clamp is movably connected to the linkage plate through a rotating shaft. Under the action of the movably connected linkage plate and the support rod, the self-clamp deflects outwards, thereby playing a locking role. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 This utility model Figure 1 Schematic diagram from another perspective.

[0017] Figure 3 This utility model Figure 1 Right view of .

[0018] Figure 4 This utility model Figure 3 Sectional view at AA.

[0019] In the figure: 1-fixed head, 2-linkage plate, 3-self-card, 4-linkage rod, 5-outer cylinder, 6-linkage ring, 7-inner core rod, 8-drilling head, 9-outer blade, 10-locking nut, 11-support rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 In the embodiment of the utility model, a combined bolt with a pointed opening structure includes a drilling head 8; an outer cylinder 5 is arranged on the outside of the drilling head 8, and a plurality of linkage rings 6 are welded on the outer cylinder 5, and the plurality of linkage rings 6 are arranged in a circular array along the central axis of the outer cylinder 5; a linkage rod 4 is movably connected to the inner side of the linkage ring 6 through a rotating shaft, and a self-clip 3 is welded on the linkage rod 4, and secondly, the self-clip 3 is arranged in an arc shape.

[0022] By adopting the above technical solution, the drilling head 8 rotates with the outer cylinder 5 and cooperates with the outer blade 9 to grind a hole, which is convenient for installation when there is no hole and is more convenient to use. The rotation of the outer cylinder 5 can drive the self-card 3 to move. Under the action of the self-card 3 cooperating with the connecting linkage plate 2, self-carding can be achieved, and there is no need to connect other locking parts.

[0023] In this embodiment, an outer blade 9 is welded to one end of the outer cylinder 5 close to the drilling head 8 , and a plurality of outer blades 9 are provided. Secondly, the plurality of outer blades 9 are arranged in a circular array along the central axis of the drilling head 8 .

[0024] By adopting the above technical solution, the multiple outer blades 9 have the same effect as a drill bit and play a grinding role, and drilling with the drilling head 8 is more convenient and faster.

[0025] In this embodiment, the drilling head 8 is welded to the inner core rod 7, the other end of the inner core rod 7 is welded with a fixing head 1, and the drilling head 8 is connected to the outer cylinder 5 through threads.

[0026] Furthermore, one end of the self-card 3 is movably connected to the linkage plate 2 via a rotating shaft, and the linkage plate 2 is movably connected to the support rod 11 welded on the fixed head 1.

[0027] By adopting the above technical solution, when the outer cylinder 5 is rotated, the linkage ring 6 drives the linkage rod 4 to move, and the self-card 3 is deflected outward under the action of the linkage plate 2 being movably connected to the supporting rod 11 through the rotating shaft at one end of the self-card 3, thereby playing a locking role.

[0028] In this embodiment, the outer side of the outer cylinder 5 is provided with an external thread which is threadably connected to the locking nut 10 .

[0029] Furthermore, one end of the drilling head 8 away from the inner core rod 7 is flush with one end of the outer blade 9 away from the outer cylinder 5 .

[0030] By adopting the above technical solution, after the hole is opened, the outer tube 5 is inserted into the hole, and then the locking nut 10 is connected through the external thread to complete the locking.

[0031] The working principle of the utility model is as follows: the drilling head 8 rotates with the outer cylinder 5, and cooperates with the outer blade 9 to grind and open a hole, so as to facilitate installation when there is no hole position and is more convenient to use. The rotation of the outer cylinder 5 can drive the self-card 3 to move. Under the action of the self-card 3 cooperating with the connecting linkage plate 2, self-carding can be achieved, and there is no need to connect other locking parts; multiple outer blades 9 have the same effect as the drill bit, and play a grinding role, and it is more convenient and quick to drill holes with the drilling head 8; when the outer cylinder 5 is rotated, the linkage ring 6 drives the linkage rod 4 to move, and one end of the self-card 3 is movably connected to the linkage plate 2 through the rotating shaft. Under the action of the movably connected linkage plate 2 and the support rod 11, the self-card 3 deflects outward, thereby playing a locking role; after opening the hole, the outer cylinder 5 is inserted into the hole, and then the locking nut 10 is connected through the external thread to complete the locking.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A combined bolt with a pointed opening structure, characterized in that: The invention comprises a drilling head (8); an outer cylinder (5) is arranged on the outside of the drilling head (8); a plurality of linkage rings (6) are welded to the outer cylinder (5), and the plurality of linkage rings (6) are arranged in a ring array along the central axis of the outer cylinder (5); a linkage rod (4) is movably connected to the inner side of the linkage ring (6) via a rotating shaft; a self-clamp (3) is welded to the linkage rod (4); and the self-clamp (3) is arranged in an arc shape.

2. The combined bolt with a pointed opening structure according to claim 1, characterized in that: An outer blade (9) is welded to one end of the outer cylinder (5) close to the drilling head (8), and a plurality of outer blades (9) are provided. Furthermore, the plurality of outer blades (9) are arranged in a circular array along the central axis of the drilling head (8).

3. The combined bolt with a pointed opening structure according to claim 1, characterized in that: The drilling head (8) is welded to the inner core rod (7), a fixing head (1) is welded to the other end of the inner core rod (7), and the drilling head (8) is connected to the outer cylinder (5) via threads.

4. The combined bolt with a pointed opening structure according to claim 1, characterized in that: One end of the self-card (3) is movably connected to the linkage plate (2) via a rotating shaft, and the linkage plate (2) is movably connected to a support rod (11) welded to the fixed head (1).

5. The combined bolt with a pointed opening structure according to claim 1, characterized in that: The outer side of the outer cylinder (5) is provided with an external thread to which the locking nut (10) is threadedly connected.

6. The combined bolt with a pointed opening structure according to claim 1, characterized in that: The end of the drilling head (8) away from the inner core rod (7) is flush with the end of the outer blade (9) away from the outer cylinder (5).

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