Portable firing pin protrusion amount detection ruler

Abstract

The utility model discloses a portable firing pin protruding amount detection ruler which is characterized in that the portable firing pin protruding amount detection ruler comprises a main body frame (1), one end of the main body frame (1) is provided with a positioning shaft body (2), the positioning shaft body (2) is provided with a plurality of rotatable ruler sheets (3), the end portion of each ruler sheet (3) is provided with a measuring port (4) used for measuring the protruding amount of firing pins of different models, and the plurality of ruler sheets (3) are combined to form a measuring ruler group (5). And the measuring scale group (5) is arranged in the main body frame (1) and is flush with the main body frame (1). The device has the advantages of being simple in structure and convenient to operate and carry, and meanwhile the efficiency and accuracy of measuring the protruding amount of the firing pin can be improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring ruler technology, and in particular to a portable striking pin protrusion measuring ruler. Background Technology

[0002] Firearms rely on a firing pin to ignite the primer of a cartridge and launch the cartridge. The protrusion of the firing pin is a crucial dimension in firearm design, directly affecting the reliability of the firing mechanism. If the protrusion is too long, it can cause the primer to puncture or the firing pin to break. If it is too short, it can cause the cartridge to fail to fire. In response, there is a measuring tool for the protrusion of the firing pin, such as the Chinese utility model patent with publication number CN220103937U, which includes a measuring seat, a dial indicator, a measuring pin, a compression spring, a dial indicator, and a set screw. The outer surface of the measuring seat is a stepped shaft with a smaller front and a larger rear. The front end of the measuring seat is used to extend into the inner hole of the bolt, and the front end face of the measuring seat is used to abut against the bolt cartridge base. The outer surface of the rear end of the measuring seat is provided with an external thread. The measuring seat is provided with a stepped hole with a smaller front and a larger rear along the axial direction. The front end of the dial indicator is provided with a threaded hole along the axial direction. The threaded hole of the dial indicator is engaged with the external thread of the rear end of the measuring seat for fixation. The rear end of the dial indicator is provided with a stepped hole with a smaller front and a larger rear along the axial direction. The stepped hole of the dial indicator is connected to the threaded hole of the dial indicator. The middle part of the measuring pin is provided with an annular boss. The measuring device is a measuring rod structure that is inserted into the gun part through a handle. It converts the amount of the firing pin protruding from the bullet base plane inside the gun onto a dial indicator on the outside of the gun. However, the device also has some shortcomings. The device is a rod structure with a certain length and a large size, making it inconvenient to carry. Secondly, the elasticity of the spring in the device directly affects the accuracy of the firing pin protrusion measurement. If the elasticity of the spring is not good, the measurement accuracy will decrease. Utility Model Content

[0003] The purpose of this invention is to provide a portable striking pin protrusion measurement ruler. This invention features a simple structure, is easy to operate and carry, and can improve the efficiency and accuracy of striking pin protrusion measurement.

[0004] The technical solution of this utility model is as follows: A portable firing pin protrusion measuring ruler includes a main frame, one end of which has a positioning shaft, and the positioning shaft has multiple rotatable ruler plates. Each ruler plate has a measuring port at its end for measuring the firing pin protrusion. The multiple ruler plates are combined to form a measuring ruler group for measuring different types of firing pins. The measuring ruler group is placed inside the main frame and is flush with the main frame.

[0005] In the aforementioned portable striking pin protrusion measuring ruler, one end of the ruler plate located on the uppermost and lowermost sides of the measuring ruler assembly is provided with a lateral portion; the measuring port is located at the end of the lateral portion.

[0006] In the aforementioned portable striking pin protrusion measuring ruler, the ruler plate includes a plate body, one end of which has symmetrically arranged protrusions, and the measuring port is formed by a groove between the two protrusions, and the measuring port has a rectangular groove structure.

[0007] In the aforementioned portable striking pin protrusion measuring ruler, the upper and lower sides of the main frame have arc-shaped openings that facilitate the rotation of the measuring ruler assembly from inside the main frame.

[0008] In the aforementioned portable striking pin protrusion measuring ruler, the main frame includes an upper frame rod, a vertical rod, and a lower frame rod. There are transition arcs between the upper frame rod and the vertical rod, and between the vertical rod and the lower frame rod. The measuring ruler assembly is arranged between the upper frame rod and the lower frame rod.

[0009] In the aforementioned portable striking pin protrusion measuring ruler, there is a longitudinal space between the vertical rod and the measuring ruler assembly to facilitate the rotation of the measuring ruler assembly.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] 1. In this utility model, a positioning shaft is installed at one end of the main frame, and multiple rotatable rulers are combined to form a measuring ruler group that can be placed inside the main frame and flush with it. Compared with the existing rod-shaped measuring tools, it is small in size and easy to carry. Each ruler end is provided with a measuring port for measuring the protrusion of different types of firing pins, so that the measuring ruler group can meet the measurement needs of various types of firing pins. Operators can quickly select the corresponding measuring port according to the firing pin model, thereby improving measurement efficiency and accuracy.

[0012] 2. The main frame is provided with arc-shaped openings on the upper and lower sides to facilitate the rotation of the measuring scale, making it convenient for users to rotate the scale piece out from inside the main frame. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the unfolded measuring scale assembly of this utility model;

[0015] Figure 3 This is a schematic diagram of the ruler.

[0016] The markings in the attached diagram are as follows: 1-Main frame, 2-Positioning shaft, 3-Scale piece, 4-Measuring port, 5-Measuring scale set, 6-Lateral part, 7-Piece, 8-Protrusion, 9-Arc-shaped opening, 10-Upper frame rod, 11-Vertical rod, 12-Lower frame rod, 13-Transition arc, 14-Longitudinal space. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example: A portable striking pin protrusion measuring ruler includes a main frame 1, which is integrally formed by bending to ensure good structural strength. One end of the main frame 1 has a positioning shaft 2, as shown in the attached figure. Figure 1 As shown, the positioning shaft 2 has multiple rotatable scale plates 3, which can be rotated out from the main frame. Each scale plate 3 has a measuring port 4 at its end for measuring different types of firing pins. The scale plate 3 includes a plate body 7, as shown in the attached figure. Figure 3 As shown, one end of the plate 7 has symmetrically arranged protrusions 8. The measuring port 4 is formed by the groove between the two protrusions 8. The measuring port 4 has a rectangular groove structure. According to different firearm models, the corresponding scale plate is selected. The measuring port matches the protrusion of the firing pin. The protrusion of the firing pin will extend into the measuring port. Whether the length of its protrusion matches the depth of the measuring port is checked. If it does not meet the standard of the measuring port, the protrusion of the firing pin should be adjusted in time. As shown in the attached figure. Figure 2 As shown, multiple rulers rotate out from the main frame and unfold. These rulers 3 combine to form a measuring scale group 5, which is placed inside and flush with the main frame 1. All rulers have standard lengths and widths, differing only in the depth of their measuring ports. After rotation and overlap, multiple rulers form a measuring scale group. The rulers 3 are marked with model numbers. To facilitate quick identification of the corresponding firing pin model's measuring port, the uppermost and lowermost rulers 3 in the measuring scale group 5 have lateral portions 6 at one end, with measuring ports 4 located at the ends of these lateral portions 6. This placement of the measuring ports on the sides of the rulers facilitates measurement in cases where firing pin positions are unusual. Using a ruler structure to measure firing pin protrusion is more stable in terms of dimensional structure compared to using a spring-loaded measuring rod. The main frame 1 includes an upper frame rod 10, a vertical rod 11, and a lower frame rod 12. A transition arc 13 exists between the upper frame rod 10 and the vertical rod 11, and between the vertical rod 11 and the lower frame rod 12. The measuring scale 5 is positioned between the upper frame rod 10 and the lower frame rod 12. The overall structure of the main frame is simple, stable, and reliable. A longitudinal space 14 exists between the vertical rod 11 and the measuring scale 5 to facilitate rotation of the measuring scale 5. To avoid interference when the measuring scale rotates in or out of the main frame, the lengths of the upper and lower frame rods are longer than the measuring scale piece, thus forming this longitudinal space.

[0019] The upper and lower sides of the main frame 1 have arc-shaped openings 9 that facilitate the rotation of the measuring scale 5 from the main frame 1, making it convenient for the user to rotate the scale piece out from the main frame.

[0020] This utility model also has the following advantages: 1. High integration: Adopting a Swiss Army knife-style structure, it can integrate various firearm firing pin protrusion detection tools into one unit, achieving "multi-purpose use of one ruler"; 2. Students can use it in groups or individually during practical training, solving the problem of insufficient quantity in traditional toolboxes and improving classroom interaction and practical training coverage; 3. The simplification of the structure can effectively reduce production costs; 4. The edges of the ruler and the main frame are rounded and sharpened to avoid scratches during teaching and to meet relevant safety regulations; 5. The lightweight design is suitable for individual soldiers to carry and meets the needs of rapid inspection on the battlefield.

[0021] The working principle of this utility model is as follows: When it is necessary to measure the protrusion of the firing pin, firstly, according to the model of the firing pin to be measured, the corresponding model-marked ruler 3 is rotated out from the main frame 1 through the arc-shaped openings 9 on the upper and lower sides of the main frame 1. The ruler 3 rotates around the positioning shaft 2. The measuring scale group 5 composed of multiple rulers 3 is normally stored inside the main frame 1 and flush with it. When in use, the rotated ruler 3 can flexibly meet the measurement needs. The ruler 3 is composed of a plate body 7. The symmetrically arranged protrusions 8 at one end of the plate body 7 form a rectangular groove structure measuring port 4. The measuring port 4 of the ruler 3 is aligned with the protrusion of the firing pin, so that the protrusion of the firing pin extends into the measuring... If the length of the protruding part of the firing pin in measuring port 4 is consistent with the depth of the measuring port 4, it means that the protrusion of the firing pin meets the standard of that model. If they are inconsistent, the protrusion of the firing pin needs to be adjusted in time. For some cases where the firing pin position is more special, the measuring port 4 is set on the lateral part 6 of the upper and lower scale plates 3 of the measuring scale group 5. Through the measuring port 4 of the lateral part 6, the firing pin in special position can be measured conveniently. In this way, by using the measuring port 4 on different scale plates 3, the measuring scale can meet the measurement needs of various models of firing pins. Operators can complete the measurement work quickly and accurately, improving measurement efficiency and accuracy.

[0022] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. Furthermore, in these embodiments, "up," "down," "left," "right," "front," and "back" represent relative positions only, not absolute positions. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A portable firing pin protrusion gage, characterized by: The utility model relates to a kind of measuring ruler group for measuring different types of firing pin, including main frame (1), and the main frame (1) one end has positioning shaft body (2), and positioning shaft body (2) has multiple rotatable scale pieces (3), and the end of each scale piece (3) is equipped with the measuring port (4) for measuring the protruding amount of firing pin, and multiple scale pieces (3) combination form the measuring ruler group (5) for measuring different types of firing pin;The measuring ruler group (5) is placed in main frame (1) and is flush with main frame (1).

2. A portable bullet proofing gauge as defined in claim 1 wherein: The end of scale piece (3) located in the uppermost side and the lowermost side of the measuring ruler group (5) is equipped with lateral part (6);The measuring port (4) is arranged at the end of lateral part (6).

3. A portable bullet proofing gauge as defined in claim 1 wherein: The scale piece (3) includes scale body (7), and one end of scale body (7) has symmetrically arranged protruding part (8), and the measuring port (4) is formed by the groove between the protruding part (8) of both sides, and the measuring port (4) is rectangular groove structure.

4. A portable bullet proofing gauge as defined in claim 1 wherein: The upper side and the lower side of the main frame (1) have arc-shaped port (9) for facilitating the turning of the measuring ruler group (5) from the main frame (1).

5. A portable bullet proofing gauge as defined in claim 1 wherein: The main frame (1) includes upper frame rod (10), vertical rod (11) and lower frame rod (12), and the upper frame rod (10) and the vertical rod (11) and the vertical rod (11) and the lower frame rod (12) have transition circular arc (13), and the measuring ruler group (5) is arranged between the upper frame rod (10) and the lower frame rod (12).

6. A portable bullet proofing gauge as defined in claim 5 wherein: The vertical rod (11) and the measuring ruler group (5) have longitudinal space (14) for facilitating the rotation of the measuring ruler group (5).

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