Locking assembly for guide rail

Abstract

The utility model relates to a locking component for a guide rail, which comprises a screw rod, a locking block sleeved on the screw rod and a locking nut in threaded connection with a threaded connection end positioned on the outer side of the locking block, at least one vertical through hole is formed in the outer end of the locking block, and a first limiting pin is assembled in the vertical through hole; the opposite end of the locking nut is provided with a clamping and blocking ring which extends outwards in the axial direction. An annular check ring is arranged on the inner wall of the through hole of the locking block so as to limit the position of the clamping and blocking ring inserted into the through hole of the locking block. The first limiting pins are used for being arranged on the two sides of the necking part between the opposite ends of the clamping and blocking ring and the locking nut after the clamping and blocking ring is inserted into the penetrating hole of the locking block so that clamping and blocking of the clamping and blocking ring can be formed. The locking block can move along the axial direction of the screw along with the locking nut, the defect that the guide rail cannot be detached due to the fact that the locking block is blocked is effectively avoided, meanwhile, the screw and the locking nut can be simply and conveniently detached, maintenance is easy, and use cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gun sighting device, concretely relates to a locking assembly for guide rail. BACKGROUND

[0002] Figure 1 、 2 , 3 as shown in the prior art is widely used in the installation rail of sighting device, including base 1 and setting at base 1 bottom surface fixed rail 2, movable rail 3 and locking assembly for guide rail, the locking assembly for guide rail includes one end (fixed rail connecting end) with fixed rail 2 fixed connection screw rod 4, locking block 5 is assembled on movable rail 3, locking nut 6, when using, locking block 5 is extruded towards the fixed rail connecting end of screw rod 4 by locking nut 6 (locking block 5 is pressed on the guide rail bottom side inclined plane by locking nut 6, is guided by the side ear 7 of both ends of locking block 5, locking nut 6 is pressed on the outside plane of locking block 5), so as to realize the buckling of the rail on the sighting device to be assembled, locking. Although this locking assembly is simple in structure, it has a common defect, that is, when disassembling the sighting device or gun, the locking block 5 is stuck and cannot be timely and smoothly detached from the assembly cavity of the movable rail 3 assembled therewith, so that the base 1 cannot be timely and even effectively detached from the rail of the sighting device or gun assembled therewith, which seriously affects normal operation and even causes the shooter to suffer immeasurable potential fatal harm. The reason is that, during disassembly, the locking block 5 does not have reliable mechanical linkage connection with the locking nut 6, but during assembly, the locking block 5 is tightly pressed on the rail assembled therewith by the locking nut 6, forming a tightly pressed tendency and a tight fit between the locking block 5 and the rail, which causes the locking block 5 to be unable to loosen in time.

[0003] In addition, the threaded end of the screw rod 4, i.e. the end threadedly connected with the locking nut 6, needs to be kept loose without falling off, i.e. the locking nut 6 is in a disassembled and loosened state, so that the base 1 can be disassembled from the rail, and the locking nut 6 cannot be detached from the screw rod 4 to prevent the locking nut 6 from being lost. Therefore, the prior art designs a riveted stopper at the end of the threaded end of the screw rod 4, which cooperates with the annular limiting stopper 16 on the perforation of the locking nut 6 to form a clamping stop. This structure can effectively prevent the locking nut 6 from falling off, but it needs to be damaged during maintenance, causing factual irreversible damage, so that the replacement method is adopted in practice, which undoubtedly increases the use cost. UTILITY MODEL CONTENTS

[0004] The utility model aims to solve the problems of instability during disassembly and high use cost in the prior art.

[0005] In order to achieve the above object, the utility model provides a locking assembly for guide rail, including screw rod, locking block of setting on screw rod, and locking nut of screw thread connection with screw thread connection end of locking block outside, its special, the outer end of locking block is equipped with at least one vertical perforation, the vertical perforation is assembled with a first limit pin;

[0006] The opposite end of the locking nut is provided with an axially outwardly extending clamping ring.

[0007] The inner wall of the perforation of the locking block is provided with an annular retainer ring to limit the position of the clamping ring inserted into the perforation of the locking block.

[0008] The first limit pin is used to be placed on one side of the necked portion between the clamping ring and the opposite end of the locking nut after the clamping ring is inserted into the perforation of the locking block to form the clamping of the clamping ring.

[0009] Further, the vertical perforation is two, and the vertical perforation is symmetrically arranged about any diameter line of the perforation of the locking block, and further comprising a second limit pin inserted into the vertical perforation, used to be placed on the other side of the necked portion between the clamping ring and the opposite end of the locking nut after the clamping ring is inserted into the perforation of the locking block to form the clamping of the clamping ring.

[0010] Further, the threaded connection end of the screw rod is provided with a threaded hole, and a limit screw is screwed from the outer end of the locking nut, and the diameter of the screw head of the limit screw is greater than the inner diameter of the annular limit piece of the locking nut.

[0011] The utility model has the advantages that: the locking block can move along the screw rod axially with the locking nut, effectively avoiding the disadvantage that the locking block is stuck and the guide rail cannot be disassembled, and the screw rod and the locking nut can be easily disassembled and maintained, reducing the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the existing sighting device guide rail.

[0013] Figure 2 It is a schematic diagram of the bottom surface of the existing sighting device guide rail.

[0014] Figure 3 It is a sectional view of the bottom surface of the existing sighting device guide rail.

[0015] Figure 4 It is an exploded view of the sighting device guide rail provided by the embodiment.

[0016] Figure 5 It is a bottom sectional view of Figure 4

[0017] MARKING OF DRAWINGS: ​

[0018] 1, base; 2, fixed clamping rail; 3, movable clamping rail; 4, screw rod; 5, locking block; 6, locking nut; 7, side lug; 8, first limiting pin; 9, first limiting pin; 10, vertical perforation; 11, clamping ring; 12, annular check ring; 13, necked portion; 14, threaded hole; 15, limiting screw; 16, annular limiting check piece. DETAILED DESCRIPTION

[0019] To further illustrate the technical means and effects taken by the present application to achieve the predetermined purpose, the specific implementation, structural features and effects of the present application will be described in detail below in combination with the drawings and examples.

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "aligned", "overlapped", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0023] The present embodiment provides a kind of Figure 4 、 5The guide rail locking assembly shown includes a screw rod 4, a locking block 5 sleeved on the screw rod 4, and a locking nut 6 threadedly connected with a threaded connection end located outside the locking block 5. The outer end of the locking block 5 is provided with two vertical through holes 10 symmetrical about any diameter line of the through hole of the locking block 5. A first limiting pin 8 and a second limiting pin 9 are respectively arranged in each vertical through hole 10. Meanwhile, the opposite end of the locking nut 6 (i.e. the end opposite to the outer end of the locking block 5, which is named as the inner end of the locking nut) is provided with an axially outwardly extending clamping ring 11. The inner wall of the through hole of the locking block 5 is provided with an annular retaining ring 12 to limit the position of the clamping ring 11 inserted into the through hole of the locking block 5. The position depends on the axially outwardly extending distance of the clamping ring 11, i.e. the distance between the clamping ring 11 and the inner end of the locking nut 6. When the clamping ring 11 is inserted into the locking block 5, it is clamped and limited by the annular retaining ring 12, so that the inner end of the locking nut 6 is in contact with the end face of the outer end of the locking block 5. Then, the first limiting pin 8 and the second limiting pin 9 are inserted into the locking block 5 through the two vertical through holes 10 in sequence and are respectively arranged on the two sides of the necked portion 13 between the clamping ring 11 and the opposite end (inner end) of the locking nut 6. In this way, the first limiting pin 8 and the second limiting pin 9 are clamped on the outer side wall of the clamping ring 11, forming that the clamping ring 11 is clamped between the annular retaining ring 12 and the first limiting pin 8 and the second limiting pin 9, and then realizing the relative fixed connection between the locking nut 6 integrally connected with the clamping ring 11 and the locking block 5. Thus, it is ensured that the locking block 5 and the locking nut 6 move along the axial direction of the screw rod 4 simultaneously during the disassembly process, avoiding the phenomenon that the locking block 5 is clamped and cannot be timely separated from the base 1 of the guide rail in the prior art, improving the reliability and simplicity of operation, and especially ensuring the safety of the user.

[0024] In this embodiment, a threaded hole 14 is formed at the threaded connection end of the screw rod 4 and is threadedly connected with a limiting screw 15 inserted from the outer end of the locking nut 6. The diameter of the screw head of the limiting screw 15 is greater than the inner diameter of the annular limiting flange 16 of the locking nut 6, so as to ensure that the locking nut 6 is not separated from the screw rod 4 after the loosening of the locking block 5 is realized, preventing the loss of the locking nut 6. However, this structure only needs to disassemble the limiting screw 15 to realize the disassembly of the locking nut 6 and the locking block 5 during the later maintenance, without damaging the screw rod 4, without the need for replacement, and greatly reducing the use cost.

Claims

1. A locking assembly for a guide rail, comprising a screw (4), a locking block (5) sleeved on the screw (4), and a locking nut (6) threadedly connected to a threaded connection end located outside the locking block (5), characterized in that, The locking block (5) has at least one vertical through hole (10) at its outer end, and a first limiting pin (8) is fitted inside the vertical through hole (10). The locking nut (6) is provided with an axially extended retaining ring (11) at the opposite end; The inner wall of the through hole of the locking block (5) is provided with an annular retaining ring (12) to limit the position of the retaining ring (11) inserted into the through hole of the locking block (5); The first limiting pin (8) is used to be placed on the neck (13) side between the opposite ends of the retaining ring (11) and the locking nut (6) after the retaining ring (11) is inserted into the through hole of the locking block (5) to form a locking effect on the retaining ring (11).

2. The locking assembly for the guide rail according to claim 1, characterized in that, The vertical perforations (10) are two in number, symmetrically arranged about any diameter line of the perforations of the locking block (5); It also includes a second limiting pin (9) inserted into the vertical through hole (10) for placing on the other side of the neck (13) between the opposite ends of the retaining ring (11) and the locking nut (6) after the retaining ring (11) is inserted into the through hole of the locking block (5) to form a locking effect on the retaining ring (11).

3. The locking assembly for the guide rail according to claim 1 or 2, characterized in that, The screw (4) has a threaded hole (14) at its threaded end, which is threaded to a limiting screw (15) that passes through the outer end of the locking nut (6). The diameter of the screw head of the limiting screw (15) is larger than the inner diameter of the annular limiting baffle (16) of the locking nut (6).

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