JP4882602B2 - Front grip member - Google Patents

Description

  The present invention relates to a front gripping member attached to an attachment portion formed on a cylinder covering a barrel of a gun.

2. Description of the Related Art Conventionally, it is known that a front gripping member attached to a mounting portion formed on a cylinder covering a gun barrel is used for improving the operability of the gun during shooting. As described in Patent Document 1, the front gripping member includes a main body portion provided with a pair of engaging claws that engage with the engaging portion of the mounting portion on one end side, and is held inside the main body portion. It consists of a shaft member provided on one end with a contact surface that protrudes inside the groove between the claws, and is attached to the mounting part by sandwiching the engagement part between the engagement claw of the main body part and the contact surface of the shaft member It has become so.
US Patent Application Publication No. 2006/64913

  When a gun equipped with the above-mentioned front gripping member is dropped during shooting training or during transportation, if an impact force is applied to the front gripping member after landing from the front gripping member, the impact force causes the engagement portion to pass through the engaging portion. There is a possibility that the continuation of the shooting becomes difficult because the mounting portion and the cylinder are bent to adversely affect the barrel and other parts. Therefore, an object of the present invention is to solve the above-described problems, and an object thereof is to provide a front grip member that absorbs an impact force applied to an engaging portion.

  The front gripping member of the present invention includes a main body provided with a pair of engaging claws on one end side to be engaged with an engaging portion of a mounting portion formed on a cylinder covering the barrel of the gun, and an inner side of the main body. The shaft member is provided with a contact surface that is held on one end side and protrudes to the inside of the groove between the engagement claws, and the engagement portion is sandwiched between the engagement claw of the main body portion and the contact surface of the shaft member. The front grip member attached to the mounting portion includes an impact force absorbing mechanism that absorbs an impact force applied from the front grip member to the engaging portion when an impact force is applied to the front grip member. And Specifically, the impact force absorbing mechanism is composed of a cushioning material provided on the other end side of the shaft member, and when the impact force is applied to the front gripping member, the impact force is absorbed by the cushioning material. Features. Further, the impact force absorbing mechanism is composed of an annular groove provided on the outer periphery of the small diameter portion of the shaft member, and when the impact force is applied to the front gripping member, the impact force is absorbed by the annular groove. And Furthermore, the impact force absorbing mechanism is composed of a notch provided in the pair of engaging claws of the main body, and when the impact force is applied to the front gripping member, the impact force is absorbed by the notch. It is characterized by that.

  In the present invention, the front gripping member includes a main body portion provided with a pair of engaging claws on one end side to be engaged with an engaging portion of an attachment portion formed on a cylinder covering the barrel of the gun, and an inner side of the main body portion. And a shaft member provided on one end with a contact surface that protrudes inwardly between the engaging claws, and when a predetermined or more impact force is applied to the pair of engaging claws of the main body. A notch that makes the engaging claws easy to break is provided, and a shock absorber is attached to the large-diameter portion of the shaft member that has a stepped shape. An annular groove that makes the small diameter part easy to break is provided, and when an impact force is applied to the front gripping member, it is separated from the front gripping member by any one of the notch part, the cushioning material, and the annular groove constituting the impact force absorbing mechanism. The impact force applied to the engaging portion is absorbed.

  In the gun 1 shown in FIG. 1, a front grip member 10 is attached to one of a plurality of attachment portions 4 formed in a cylinder 3 that covers a barrel 2. The front gripping member 10 is used for improving the operability of the gun 1 during shooting. The front grip member 10 will be described. The front gripping member 10 is held on the inner side of the main body portion 12 provided with a pair of engaging claws 11 on one end side to be engaged with the engaging portion 5 of the mounting portion 4. It comprises a shaft member 15 provided on one end side with a contact surface 14 projecting inwardly between the grooves 13. A stepped hole 16 penetrating in the axial direction is provided inside the main body portion 12, and a screw portion 17 is formed between the small diameter hole 16a and the large diameter hole 16b. A pair of engaging claws 11 formed so as to be engaged with the protrusion 5 a of the engaging portion 5 are provided on one end side of the main body portion 12. Each engagement claw 11 is provided with a notch 18 that makes it easier to break the engagement claw 11 when an impact force of a predetermined level or more is applied. Each engaging claw 11 is provided with a through hole 19 in the horizontal direction with respect to the stepped hole 16.

  The shaft member 15 has a stepped shape, and a screw portion 20 and an O-ring mounting groove 21 are formed between the small diameter portion 15a on one end side and the large diameter portion 15b on the other end side, respectively. A hole 22 extending in the axial direction is provided inside the shaft member 15, and a cushioning material 23 is attached to the large diameter portion 15 b so as to close the hole 22. A contact surface 14 is formed at the tip of the small diameter portion 15a. A protrusion 24 is provided on the contact surface 14. The protrusions 24 are shorter than the depth of the lateral grooves 6 provided in the mounting portion 4. An annular groove 25 is formed on the outer periphery of the small-diameter portion 15a of the shaft member 15 so that the small-diameter portion 15a can be easily broken when a predetermined impact force is applied. From the above, the front gripping member 10 rotates the shaft member 15 held inside the main body portion 12 so that the contact surface 14 protrudes inside the groove 13 between the pair of engaging claws 11 to be engaged. The part 5 is attached to the attachment part 4 so as to be sandwiched between the pair of engaging claws 11 and the contact surface 14. Further, the sandwiched state between the pair of engaging claws 11 and the contact surface 14 can be confirmed by the position of the protruding portion 24 visible from the through hole 19 provided in the main body portion 12. Further, the shaft member 15 is prevented from rotating by vibration or the like by the O-ring 26. In the present embodiment, an impact force that cannot be absorbed by the cushioning material 23 is set as a predetermined impact force or more.

  When the gun 1 equipped with the front gripping member 10 is dropped during shooting training or during transportation, the notch 18, even if an impact force is applied to the front gripping member 10 after landing from the front gripping member 10, The impact force applied to the engaging portion 5 from the front gripping member 10 is absorbed by the impact force absorbing mechanism A including the buffer material 23 and the annular groove 25. Specifically, when a predetermined or greater impact force F1 is applied from the horizontal direction with respect to the axial direction of the front gripping member 10, the notch 18 provided in the engaging claw 11 is broken, so that the engaging claw 11 is The state in which the engaging portion 5 is sandwiched between the engaging claw 11 and the contact surface 14 is released, and the force applied by the impact force F1 to the engaging portion 5 is absorbed. Next, when an impact force F2 is applied to the front gripping member 10 from the axial direction, the impact force F2 is absorbed by the deflection of the cushioning material 23, but in the case of the impact force F2 that cannot be absorbed by the cushioning material 23, When the annular groove 25 provided in the small diameter portion 15 a is broken, the small diameter portion 15 a is broken, the state where the engagement portion 5 is sandwiched between the engagement claw 11 and the contact surface 14 is released, and the impact force F <b> 2 is applied to the engagement portion 5. The applied force will be absorbed.

  Therefore, when the gun 1 equipped with the front gripping member 10 is dropped during shooting training or during transportation, even if the impact force is applied to the front gripping member 10 after landing from the front gripping member 10, the impact force absorbing mechanism Since the impact force is absorbed by any of A, the influence on the mounting portion 4 and the cylinder 3 via the engaging portion 5 can be reduced, so that the mounting portion 4 and the cylinder 3 can be affected by the impact force as in the prior art. It will not be difficult to continue shooting by bending and adversely affecting the barrel 2 and other parts. Moreover, it is a simple structure and can be easily employ | adopted for the existing front grip member 10. FIG. Furthermore, if only the inexpensive front gripping member 10 is replaced, it is possible to fire again with the gun 1 with improved operability. In the present embodiment, the notch 18, the shock absorbing material 23, and the annular groove 25 of the impact force absorbing mechanism A are provided at the same time, but any one of the front grip members 10 may be provided.

It is a figure which shows the gun equipped with the front grip member of this invention. (A) is the III-III sectional view taken on the line of FIG. 1, (b) is a figure which shows the state which cancelled | released the clamping state of an engaging claw and a contact surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gun 2 Barrel 3 Cylinder 4 Attachment part 5 Engagement part 10 Front grip member 11 Engagement claw 12 Main part 13 Groove 14 Contact surface 15 Shaft member 15a Small diameter part 18 Notch part 23 Buffer material 25 Annular groove A Impact Force absorption mechanism

Claims (4)

A main body provided with a pair of engaging claws on one end side to be engaged with an engaging portion of a mounting portion formed on a cylinder to cover the barrel of the gun, and held between the engaging claws between the engaging claws A front grip that is composed of a shaft member provided at one end with a contact surface that protrudes inward of the groove, and is attached to the mounting portion by sandwiching the engagement portion between the engagement claw of the main body portion and the contact surface of the shaft member A front grip member comprising an impact force absorbing mechanism for absorbing an impact force applied from the front grip member to the engaging portion when an impact force is applied to the front grip member. The impact force absorbing mechanism is composed of a cushioning material provided on the other end side of the shaft member, and when the impact force is applied to the front gripping member, the impact force is absorbed by the cushioning material. The front gripping member according to Item 1. The impact force absorbing mechanism is composed of an annular groove provided on the outer periphery of the small-diameter portion of the shaft member, and the impact force is absorbed by the annular groove when an impact force is applied to the front gripping member. The front gripping member according to Item 1. The impact force absorption mechanism consists of notches provided in the pair of engaging claws of the main body, and the impact force is absorbed by the notches when an impact force is applied to the front gripping member. The front gripping member according to claim 1, wherein

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