D-shaped lock pin

Abstract

The utility model discloses a D type lock pin, including bolt rod and bolt head, one end of bolt head is articulated with the one end of bolt rod, the other end of bolt head is sheathed with the other end of bolt rod, and the middle section of bolt head and the middle section of bolt rod form D type cavity, convenient operation, no pin-off risk.

Description

Technical Field

[0001] The utility model belongs to the technical field of lock pins, and more specifically relates to a D-shaped lock pin. Background Art

[0002] In some fields with high safety requirements, such as structures of bicycles, safety vehicles, safety doors, etc. that require high-strength and high-frequency opening and closing operations, the conventional lock pin structure is a snap-type plug pin, which has weak impact and compression resistance, short service life, and a risk of pin detachment; at the same time, the installation is cumbersome, and the opening and closing operations during use are not simple enough. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a D-shaped lock pin, which is convenient to operate and has no risk of pin detachment.

[0004] To achieve the above object, the utility model provides the following technical solution: a D-shaped lock pin, including a bolt rod and a bolt head, one end of the bolt head is hinged to one end of the bolt rod, the other end of the bolt head is sleeved with the other end of the bolt rod, and a D-shaped cavity is formed between the middle sections of the bolt head and the bolt rod.

[0005] Further, the bolt head includes a hinged end, an arc section and a sleeved end, the hinged end is hinged to the bolt rod, the arc section and the bolt rod form a D-shaped cavity, and a socket hole is provided on the sleeved end.

[0006] Further, a lever is provided on one side of the sleeved end away from the arc section.

[0007] Further, the bolt head is formed by bending the head and tail ends of a metal wire rod to be connected. One end of the metal wire rod first passes through the bolt rod and then is connected to the other end to form a ring-shaped hinged end. The two sections of the metal wire rod are bent side by side to form an arc section, and the side-by-side metal wire rods are separated at one end to form a socket hole.

[0008] Further, a riveting piece is provided at one end of the arc section connecting the hinged end, and the riveting piece wraps the side-by-side metal wire rods.

[0009] Further, a tightening and expanding bent piece is provided on the riveting piece, and the tightening and expanding bent piece is located between the two sections of metal wire rods at the connection of the hinged end and the arc section.

[0010] Further, the lever is formed by two sections of metal wire rods side by side, and the plane where the lever is located is inclined to the plane where the sleeved end is located.

[0011] Further, a hinge hole is provided on the bolt rod, and both the head and tail ends of the metal wire rod are located in the hinge hole.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: When using the locking pin, the lever on the socket end is toggled to bend and expand the arc section, and the end of the bolt rod is withdrawn from the socket hole of the socket end to achieve separation; when locking is required, the two objects to be locked together are brought closer, the bolt head is moved, so that the two objects enter the arc section of the bolt head, and then the bolt rod is rotated. The end of the bolt rod first contacts the lever, and then the bolt rod is pressed towards the arc section. The inclined lever bends and expands the arc section, causing the end of the bolt rod to move closer to the socket end until the end of the bolt rod passes through the socket hole of the socket end, thereby locking the two objects together. The operation is convenient and there is no risk of pin detachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. is a schematic structural view of the D-shaped locking pin of the present utility model;

[0014] Figure 2 FIG. is a schematic structural view of the bolt head in the D-shaped locking pin of the present utility model;

[0015] Figure 3 FIG. is a schematic structural view of the riveting piece in the D-shaped locking pin of the present utility model.

[0016] Reference numerals: bolt rod 1; bolt head 2; D-shaped cavity 3; hinged end 4; arc section 5; socket end 6; socket hole 7; lever 8; riveting piece 9; tightening and bending piece 10; hinge hole 11. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] In the description of the present utility model, it should be noted that for orientation terms, if there are terms such as "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0018] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meanings of "several" and "a number of" are two or more, unless otherwise specifically defined.

[0019] Refer to Figures 1 to 3 for further description of the present utility model.

[0020] A D-shaped locking pin, comprising a bolt rod 1 and a bolt head 2. One end of the bolt head 2 is hinged to one end of the bolt rod 1, the other end of the bolt head 2 is sleeved on the other end of the bolt rod 1, and a D-shaped cavity 3 is formed between the middle sections of the bolt head 2 and the bolt rod 1.

[0021] As Figure 2 shown, preferably in this embodiment, the bolt head 2 includes a hinged end 4, an arc section 5 and a sleeved end 6. The hinged end 4 is hinged to the bolt rod 1, the arc section 5 and the bolt rod 1 form a D-shaped cavity 3, and a socket hole 7 is provided on the sleeved end 6.

[0022] As Figure 1 shown, preferably in this embodiment, a lever 8 is provided on one side of the sleeved end 6 away from the arc section 5.

[0023] As Figure 2 shown, preferably in this embodiment, the bolt head 2 is formed by bending the head and tail ends of a metal wire. One end of the metal wire first passes through the bolt rod 1 and then is connected to the other end to form a ring-shaped hinged end 4. Two sections of the metal wire are bent in parallel to form an arc section 5, and the parallel metal wires are separated at one end to form a socket hole 7.

[0024] As Figure 1 shown, preferably in this embodiment, a riveting piece 9 is provided at one end of the arc section 5 connecting the hinged end 4, and the riveting piece 9 wraps the parallel metal wires.

[0025] As Figure 1 Figure 3 shown, preferably in this embodiment, a tightening bent piece 10 is provided on the riveting piece 9, and the tightening bent piece 10 is located between the two sections of metal wire at the upper part where the hinged end 4 connects the arc section 5.

[0026] As Figure 1 and Figure 2 shown, preferably in this embodiment, the lever 8 is formed by two sections of metal wire in parallel, and the plane where the lever 8 is located is inclined to the plane where the sleeved end 6 is located.

[0027] Preferably in this embodiment, a hinge hole 11 is provided on the bolt rod 1, and both the head and tail ends of the metal wire are located in the hinge hole 11.

[0028] As Figures 1 to 3As shown, when using the locking pin, the lever 8 on the socket end 6 is toggled to bend and expand the arc section 5, and the end of the bolt rod 1 is withdrawn from the socket hole 7 of the socket end 6 to achieve separation. When locking is required, the two objects to be locked together are brought close, the bolt head 2 is moved, so that the two objects enter the arc section 5 of the bolt head 2, and then the bolt rod 1 is rotated. The end of the bolt rod 1 first contacts the lever 8, and then the bolt rod 1 is pressed towards the arc section 5. The inclined lever 8 bends and expands the arc section 5, causing the end of the bolt rod 1 to move closer to the socket end 6 until the end of the bolt rod 1 passes through the socket hole 7 of the socket end 6, thus locking the two objects together. The operation is convenient and there is no risk of pin detachment.

[0029] Of course, according to the actual practical situation, the D-shaped cavity 3 can also be changed into an O-shaped cavity, a B-shaped cavity, a triangular cavity or other special-shaped cavities, and only the bending shape of the parallel metal wires on the arc section 5 needs to be changed.

[0030] The above description is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A D-type locking pin, characterized in that: It comprises a bolt rod and a bolt head, one end of the bolt head is hinged to one end of the bolt rod, the other end of the bolt head is sleeved to the other end of the bolt rod, and a D-shaped cavity is formed between the middle section of the bolt head and the middle section of the bolt rod.

2. The D-shaped locking pin according to claim 1, characterized in that: The bolt head comprises a hinged end, an arc segment and a sleeve end, the hinged end is hinged to the bolt rod, the arc segment and the bolt rod form a D-shaped cavity, and the sleeve end is provided with a sleeve hole.

3. The D-shaped locking pin according to claim 2, characterized in that: A shifting rod is arranged on a side of the sleeve end away from the arc segment.

4. The D-shaped locking pin according to claim 3, characterized in that: The bolt head is formed by bending a metal wire at both ends, one end of the metal wire first passes through the bolt rod and then connects with the other end to form a ring-shaped hinged end, two sections of metal wire are bent side by side to form an arc section, and the parallel metal wires are separated at one end to form a socket hole.

5. The D-shaped locking pin according to claim 4, characterized in that: One end of the arc segment connected to the hinged end is provided with a riveting sheet, and the riveting sheet wraps the parallel metal wires.

6. The D-shaped locking pin according to claim 5, characterized in that: The riveting sheet is provided with an expansion and tightening bent sheet, and the expansion and tightening bent sheet is located between the upper two sections of metal wire material of the arc-shaped section connected at the hinged end.

7. The D-shaped locking pin according to claim 4, characterized in that: The lever is formed by metal wires at two ends arranged in parallel, and the plane where the lever is located is inclined to the plane where the sleeve end is located.

8. The D-shaped locking pin according to claim 4, characterized in that: The bolt rod is provided with a hinge hole, and both ends of the metal wire are located in the hinge hole.

Images