Gun barrel unit for a toy gun

Abstract

A gun barrel unit for a toy gun includes: an inner barrel and an outer barrel, the inner barrel is axially inserted in the outer barrel, at least one rotary member is provided between the inner and outer barrels to allow for rotation of the inner barrel with respect to the outer barrel, and at least one eccentric weight is fixed in the inner barrel. The inner barrel is pivotable and the inner barrel is provided with the eccentric weight, so that even when the gun is held in an inclined position, the inner barrel still can return to a non-inclined manner to ensure the ballistic trajectory stability when firing. Besides, an engaging assembly is provided at the rear end of the inner barrel, so that the inner barrel can still be fixed to the outer barrel in a fixed manner to facilitate ballistic trajectory adjustment.

Claims

1. A gun barrel unit for a toy gun comprising: an inner barrel and an outer barrel, the inner barrel being axially inserted in the outer barrel, wherein at least one rotary member is provided between the inner and outer barrels to allow for rotation of the inner barrel with respect to the outer barrel, and at least one eccentric weight is fixed to the inner barrel and located at at least one connecting position, wherein a ballistic adjustment device is disposed at a rear end of the inner barrel, a slot is provided at an upper surface of the rear end of the inner barrel, the ballistic adjustment device at least includes a bullet barrel, a pressure assembly, and a rotary base, wherein the bullet barrel is an elastic member sleeved onto the rear end of the inner barrel, wherein at least two protruding blocks are formed on an inner surface of the rear end of the bullet barrel and located corresponding to the slot of the inner barrel, wherein the pressure assembly is located on the rear end of the bullet barrel to press the protruding blocks, wherein the rotary base is sleeved onto the bullet barrel and the pressure assembly, wherein an eccentric adjustment portion is provided on an inner surface of the rotary base and located corresponding to an upper end of the pressure assembly, wherein rotating the rotary base makes the eccentric adjustment portion press the pressure assembly, and the pressure assembly presses the bullet barrel to make the protruding blocks move downward toward the slot of the inner barrel.

2. The gun barrel unit for the toy gun as claimed in claim 1, wherein a fixing member is disposed at the rear end of the inner barrel and fixed around an outer surface of the bullet barrel, and includes an annular portion and a second connecting portion which are formed at two ends of the fixing member, respectively, wherein an engaging portion is formed between the annular portion and the second connecting portion, wherein an inserting hole is formed in the engaging portion for insertion of the pressure assembly, and the rotary base is sleeved onto the engaging portion.

3. The gun barrel unit for the toy gun as claimed in claim 2, wherein an engaging assembly is provided at the rear end of the inner barrel, and includes an inserting rod and a swingable link rod which are pivoted to each other, wherein a plurality of engaging holes is formed around the annular portion, wherein when the link rod swings, the inserting rod moves forward to engage in one of the engaging holes, so as to fix the inner barrel.

4. The gun barrel unit for the toy gun as claimed in claim 3, wherein the eccentric weight is located at the rear end of the outer barrel, wherein the connecting portion is connected to the eccentric weight, wherein an inner liner is fixed on the inner surface of the rear end of the outer barrel, and the rotary member is disposed between the inner liner and the inner barrel.

5. The gun barrel unit for the toy gun as claimed in claim 4, wherein the eccentric weight is provided at the front end thereof with an inserting portion which is to be inserted in the inner liner, and the rotary member is located between the inner liner and the inserting portion.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a cross sectional view of the inner barrel of the gun barrel showing that the conventional toy gun is held in an inclined position;

(2) FIG. 2 is an assembly view of the gun barrel unit for a toy gun in accordance with the present invention;

(3) FIG. 3 is a plan view of the present invention showing that the gun barrel unit is assembled onto the toy gun;

(4) FIG. 4 is an exploded view of the gun barrel unit for a toy gun in accordance with the present invention;

(5) FIG. 5 is an illustrative view of the present invention showing that the eccentric weight is disposed in the inner barrel;

(6) FIG. 6 is a cross sectional view taken along the line A-A′ of FIG. 5;

(7) FIG. 7 is a cross sectional view taken along the line B-B′ of FIG. 5;

(8) FIG. 8 is a cross sectional view of a part of the gun barrel unit for a toy gun in accordance with the present invention;

(9) FIG. 9 is a cross sectional view of a part of the gun barrel unit for a toy gun in accordance with the present invention, wherein the bolt device moved backward; and

(10) FIG. 10 is a cross sectional view of a part of the gun barrel unit for a toy gun in accordance with the present invention, wherein the bolt device moved forward.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(11) The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.

(12) Referring to FIGS. 2 and 3, a gun barrel unit A for a toy gun in accordance with the present invention includes: an inner barrel 1, an outer barrel 2 and a ballistic adjustment device 3.

(13) The inner barrel 1, as shown in FIGS. 4 and 5, is inserted in the outer barrel 2. Provided between the inner and outer barrels 1, 2 is a rotary member 11 (which can be a bearing especially in mechanical field) to allow for rotation of the inner barrel 1 with respect to the outer barrel 2. At least one eccentric weight 12 is fixed to the inner barrel 1 at at least one connecting position 1A (as shown in FIG. 5) which can be at the front, middle or rear of the inner barrel 1 (as shown in FIG. 5). Please referring to FIGS. 6 and 7, FIG. 6 is a cross sectional view taken along the line A-A′ of FIG. 5, and FIG. 7 is a cross sectional view taken along the line B-B′ of FIG. 5, wherein the inner barrel 1 is axially rotatable. With the arrangement of the eccentric weight 12, the inner barrel 1 can be maintained in a noninclined position even when the gun A1 is held in an inclined condition. Besides, a slot 13 is provided at the upper surface of the rear end of the inner barrel 1 (as shown in FIGS. 4 and 6).

(14) The outer barrel 2, as shown in FIGS. 4 and 8, is fixed to the gun A1. A bolt device 21 is provided at the outer side of the rear end of the outer barrel 2, and an inner liner 22 is fixed on the inner surface of the rear end of the outer barrel 2. The rotary member 11 is disposed between the inner liner 22 and the inner barrel 1, and the eccentric weight 12 is located at the rear end of the outer barrel 2. The eccentric weight 12 is located at the rear end of the outer barrel 2, and provided at the front end thereof with an inserting portion 121 which is to be inserted in the inner liner 22. The rotary member 11 is located between the inner liner 22 and the inserting portion 121.

(15) The ballistic adjustment device 3 includes a bullet barrel 31, a pressure assembly 32, a rotary base 33, a fixing member 34 and an engaging assembly 35. The bullet barrel 31 is an elastic member (made of rubber or plastic) sleeved onto the rear end of the inner barrel 1. At least two protruding blocks 311 (there are four protruding blocks as shown in FIG. 6) are formed on the inner surface of the rear end of the bullet barrel 31 and located corresponding to the slot 13 of the inner barrel 1. The protruding blocks 311 are arc-shaped. The pressure assembly 32 is located on the rear end of the bullet barrel 31 to press the protruding blocks 311. The rotary base 33 is sleeved onto the bullet barrel 31 and the pressure assembly 32, and provided on the inner surface thereof with an eccentric adjustment portion 331 which is located corresponding to the upper end of the pressure assembly 32. Rotating the rotary base 33 can make the eccentric adjustment portion 331 press or not press the pressure assembly 32. When the pressure assembly 32 presses the bullet barrel 31, the protruding blocks 311 will move downward toward the slot 13 of the inner barrel 1, and thus the ballistic trajectory can be adjusted. The fixing member 34 is fixed around the outer surface of the bullet barrel 31, and includes an annular portion 341 and a connecting portion 342 formed at two ends of the fixing member 34, respectively. The fixing member 34 further includes an engaging portion 343 between the annular portion 341 and the connecting portion 342. In the engaging portion 343 is formed an inserting hole 3431 for insertion of the pressure assembly 32. The rotary base 33 is sleeved onto the engaging portion 343, and the connecting portion 342 is connected to the eccentric weight 12. The annular portion 341 is annularly provided with a plurality of engaging holes 3411. The engaging assembly 35 is located at the rear end of the inner barrel 1, and includes an inserting rod 351 and a swingable link rod 352 which are pivoted to each other. The inserting rod 351 provides forward elastic force. When the bolt device 21 does not move forward, the link rod 352 swings in one direction, at this moment, the inserting rod 351 can move forward to engage in one of the engaging holes 3411, so that the inner barrel 1 can be fixed (as shown in FIG. 9) to facilitate the adjustment of ballistic trajectory. When moving forward, the bolt device 21 will push the lower portion of the link rod 352 (as shown in FIG. 10). When the link rod 352 moves in another direction, the inserting rod 351 will move backward and will be released from the engaging holes 3411, and thus the inner barrel 1 is pivotable again.

(16) When in use, the bolt device 21 moves forward to push the lower portion of the link rod 352 (as shown in FIG. 10) to make the inserting rod 351 move backward to release from the engaging holes 3411. At this moment, the inner barrel 1 is axially pivotable again, and the gun is in a ready to fire position. Even when the gun A1 is held in an inclined position due to the restriction of location and user's posture, the inner barrel 1 will be returned to a non-inclined manner by the eccentric weight 12 (as shown in FIGS. 6 and 7) to make sure the protruding blocks 311 of the bullet barrel 31 is maintained in a non-inclined position, namely to make sure the position of the friction of the bullet is in the non-inclined position, which consequently ensures the ballistic trajectory stability and the hit rate, and this is the object of the present invention. Besides, to adjust the ballistic trajectory, the inner barrel 1 must be positioned. At this moment, the bolt device 21 must move backward (as shown in FIG. 9) to make the inserting rod 351 move forward and engage in one of the engaging holes 3411, so that the inner barrel 1 is fixed (as shown in FIG. 9), and the rotary base 33 is rotatable to facilitate the adjustment of ballistic trajectory.

(17) As mentioned above, the inner barrel 1 is pivotably disposed in the outer barrel 2, and the inner barrel 1 is provided with the eccentric weight 12, so that even when the gun A1 is held in an inclined position, the inner barrel 1 still can return to a non-inclined manner to make sure the protruding blocks 311 of the bullet barrel 31 is maintained in a non-inclined position, namely to make sure the position of the friction of the bullet is in a non-inclined upper position, which consequently ensures the ballistic trajectory stability while improving the hit rate. Besides, the inner barrel 1 can still be adjusted to be fixed to the outer barrel 2 in a fixed manner, and the ballistic trajectory is still adjustable, which therefore solves the problems of the aforementioned conventional gun barrel structure.

(18) While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.