Lens position adjusting mechanism, laser inner core and laser sighting telescope

Abstract

The invention relates to a lens position adjusting mechanism, a laser inner core and a laser sighting telescope, the lens position adjusting mechanism comprises a first lens mounting seat, a first lens and a pull rod, the front end of the pull rod is fixedly connected with the rear end of the lens mounting seat, and the rear end of the pull rod is connected with a sliding block; the sliding block is parallel to the first lens mounting seat and extends forwards along the axial direction of the first lens mounting seat; a first screw hole is formed in the top face of the front end of the sliding block, and the shifting block above the first screw hole is connected with the first screw hole through a first screw penetrating through the shifting block in the thickness direction. The focusing device is simple in structure, does not occupy axial space, and is simple and convenient to operate and rapid in focusing.

Description

Technical Field

[0001] The invention relates to a lens position adjustment mechanism, a laser inner core and a laser sight. Background Art

[0002] The invention patent No. 201320495338.X discloses a three-in-one laser light source, which fixes three light sources on the same inner shell by setting an inner core with three laser modules in the shell, i.e., a light source fixing member. When in use, the three light sources can be adjusted simultaneously, and the size is small, portable, and convenient to use. One of the particularly outstanding designs is the focusing device for the first laser module, which is attached to the patent specification. Figure 2 Combined with the corresponding text description, it can be seen that this focusing device has a complex structure, a large length, and occupies a large axial space. Since the focusing is achieved by changing the position of the laser tube through circumferential threaded rotation of the focusing handwheel, the focusing process is to convert the circumferential rotation into the forward and backward linear motion of the laser tube holder. Obviously, there is motion loss, especially the focusing speed is slow. Summary of the invention

[0003] The invention aims to overcome the defects of the existing laser sighting device, such as the complex focusing structure and slow focusing speed.

[0004] To achieve the above-mentioned purpose, the present invention provides a lens position adjustment mechanism, comprising a first lens mounting seat, a first lens mounted at the front end of the first lens mounting seat, and a pull rod, the front end of the pull rod is fixedly connected to the rear end of the lens mounting seat, and the rear end of the pull rod is connected to a slider; the slider is arranged parallel to the first lens mounting seat and extends forward along the axial direction of the first lens mounting seat;

[0005] A first screw hole is formed on the front end top surface of the sliding block, and a shifting block placed above the first screw hole is connected to the first screw hole via a first screw penetrating the thickness direction of the shifting block.

[0006] As a further improvement, the rear end of the slider extends toward one side of the pull rod to form a bent portion; the rear end of the pull rod is provided with a second screw hole;

[0007] The second screw passes through the step hole on the bending portion from the rear to the front and is connected with the second screw hole.

[0008] As a further improvement, the rear end surface of the pull rod is a concave spherical surface 1;

[0009] The step surface of the step hole is arranged on the front end surface of the bending portion, and the rear end surface of the bending portion is a second concave spherical surface, and the rear end surface coincides with the rear end surface of the step hole;

[0010] An elastic washer and a first spherical washer are arranged in sequence from the inside to the outside on the step surface of the step hole, and the spherical surface of the first spherical washer cooperates with the first concave spherical surface; a second spherical washer is arranged in the second concave spherical surface, and the second spherical washer cooperates with the spherical surface of the first spherical washer; the spherical surfaces of the first spherical washer and the second spherical washer are both convex spherical surfaces.

[0011] As a further improvement, the outer side surface of the front end of the pull rod is a spherical surface, which is placed in the spherical cavity at the rear end of the first lens mount; a retaining ring is sleeved on the spherical surface, and the retaining ring is threadedly connected to the threaded surface on the rear side of the spherical cavity; the front side of the inner surface of the retaining ring is an arcuate surface with a radius greater than the ball diameter of the spherical surface, and the rear side of the inner surface of the retaining ring is an inner convex ring with a radius smaller than the ball diameter of the spherical surface.

[0012] As a further improvement, the bottom surface of the sliding block is a corrugated surface.

[0013] As a further improvement, a hollow lever is provided on the bottom surface of the shift block, the lower end of which can be inserted into the first screw hole, and the screw rod of the first screw is placed in the hollow lever and extends downward to be connected with the first screw hole.

[0014] A laser inner core comprises an inner core shell, one side of the inner core shell is provided with a lens mounting cavity extending in the length direction, a photodiode placed on the top of a fixing seat and a second lens fixed on a second lens mounting seat are sequentially mounted at the front end of the lens mounting cavity from inside to outside; and the lens position adjustment mechanism mentioned above is also included;

[0015] The first lens mounting seat is mounted in the lens mounting cavity, and the first lens mounting seat is placed at the rear side of the fixing seat;

[0016] The rear end of the first lens mounting seat is located at the rear end of the lens mounting cavity;

[0017] The slider is arranged in parallel on the outer side of the inner core shell;

[0018] A radially penetrating slide groove is provided on the side wall of the first lens mounting seat, and the slide groove is disposed between the front end and the rear end of the first lens mounting seat;

[0019] A laser tube holder is arranged at the rear end of the slide slot, and a laser tube LD is installed at the front end of the laser tube holder;

[0020] Two opposite third screws pass through the step holes on the inner core shell from the outside and are fixedly connected with the screw holes on the laser tube seat respectively.

[0021] A laser sighting device, comprising a sighting device housing, wherein the laser inner core is arranged in the sighting device housing;

[0022] A strip-shaped through hole is provided on the top surface of the sight housing, the shift block is placed outside the strip-shaped through hole, and the first screw passes through the shift block and is connected to the first screw hole placed inside the strip-shaped through hole;

[0023] The length of the shifting block is greater than the length of the strip-shaped through hole, so that when the shifting block drives the sliding block to move along the length direction of the strip-shaped through hole, the shifting block is always located outside the strip-shaped through hole.

[0024] As a further improvement, a hollow shift rod is provided on the bottom surface of the shift block, the lower end of the hollow shift rod is inserted into the first screw hole, and the screw rod of the first screw is placed in the hollow shift rod and extends downward to be connected with the first screw hole.

[0025] As a further improvement, the rear end of the slider extends toward one side of the pull rod to form a bent portion; a second screw hole is provided at the rear end of the pull rod; and a second screw passes through a through hole on the bent portion and is connected to the second screw hole.

[0026] The invention has the advantages of simple structure, no axial space occupation, easy operation and fast focusing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a schematic diagram of the components of a lens position adjustment mechanism.

[0028] Figure 2 This is the structure of the slider Figure 1 .

[0029] Figure 3 It is a structural diagram of the pull rod.

[0030] Figure 4 This is the structure of the slider Figure 2 .

[0031] Figure 5 It is a schematic diagram of the rear end surface structure of the bending portion of the slider.

[0032] Figure 6 It is a schematic diagram of the structure of a laser core.

[0033] Figure 7 yes Figure 6 Exploded view of the laser core shown.

[0034] Figure 8 It is a schematic diagram of the front end face of the laser core.

[0035] Fig. 9 yes Figure 8 AA view of the .

[0036] Fig.10 This is a schematic diagram of a laser sight.

[0037] Fig.11 It is a schematic diagram of the arrangement of strip-shaped through holes.

[0038] Fig.12 It is a schematic diagram of the front end of the laser sight.

[0039] Fig.13 yes Fig.12 BB view.

[0040] Fig.14 It is a horizontal axial cross-sectional view of the laser sight.

[0041] Fig.15 This is an exploded view of the laser sight.

[0042] Description of reference numerals:

[0043] 1. First lens mounting seat; 2. First lens; 3. Pull rod; 4. Slider; 5. First screw hole; 6. Push block; 7. First screw; 8. Bending portion; 9. Second screw hole; 10. Second screw; 11. Through hole; 12. Inner concave spherical surface 1; 13. Retaining ring; 14. Inner convex ring; 15. Protrusion; 16. Hollow push rod; 17. Lens gland; 18. Elastic gasket; 19. Inner core shell; 20. Lens mounting cavity; 21. Fixing seat; 22. Photodiode; 23. Second lens mounting seat; 24. Second lens; 25. Slide groove; 26. Laser tube seat; 27. Laser tube L D; 28. The third screw; 29. ​​The sight housing; 30. The laser core; 31. The strip-shaped through hole; 32. The second lens screw ring; 33. The bottom surface; 34. The steel ball; 35. The spring; 36. The screw; 37. The block seal; 38. The battery compartment; 39. The battery; 40. The drive board; 41. The main control board; 42. The back cover assembly; 43. The push button switch; 44. The toggle switch; 45. The indicator light; 46. The battery cover assembly; 47. The lens assembly; 48. The laser core pressure ring; 49. The elastic gasket; 50. The second concave spherical surface; 51. The first spherical gasket; 52. The second spherical gasket. DETAILED DESCRIPTION

[0044] In order to overcome the defects of the existing laser sights in terms of complex focusing structure and slow focusing speed, the present embodiment provides a Figure 1 The lens position adjustment mechanism shown includes a first lens mount 1, a first lens 2 mounted on the front end of the first lens mount 1, and in particular, also includes a pull rod 3, the front end of the pull rod 3 is fixedly connected to the rear end of the lens mount 1, and the rear end of the pull rod 3 is connected to a slider 4; the slider 4 is arranged parallel to the first lens mount 1 and extends forward along the axial direction of the first lens mount 1.

[0045] In order to realize the connection between the slider 4 and the pull rod 3, the present embodiment specially opens a first screw hole 5 on the front end top surface of the slider 4 (the front is located on the left hand side of the viewer), and a shift block 6 placed above the first screw hole 5 is connected to the first screw hole 5 by a first screw 7 penetrating through the thickness direction of the shift block 6, that is, the first screw 7 passes through the through hole on the shift block 6 from the top surface of the shift block 6 downward and is threadedly connected to the first screw hole 5.

[0046] By moving the shift block 6, the slider 4 is driven to move by means of the connection between the first screw 7 and the first screw hole 5, and the slider 4 then drives the pull rod 3 fixedly connected thereto to move, and finally drives the first lens mounting seat 1 fixedly connected thereto to move through the pull rod 3, thereby changing the front-to-back distance of the first lens 2 and completing the change of the focal length. Compared with the focusing structure of the prior art, this focusing method does not need to occupy the axial space of the sight because the slider 4 is placed parallel to the pull rod 3, and the shift block 6 is arranged above the first lens mounting seat 1. When the sight is installed, it is located on the top surface of the sight housing. During operation, the focus can be adjusted by moving the shift block 6 axially forward and backward. The operation is very convenient, and the distance adjustment feels more precise.

[0047] In order to facilitate the simple and reliable connection with the pull rod 3, this embodiment provides the following Figure 2 The slider 4 shown in the figure has a rear end extending toward one side of the pull rod 3 to form a bent portion 8; and the rear end of the pull rod 3 is provided with Figure 3 The second screw hole 9 is shown; the second screw 10 passes through the through hole 11 on the bent portion 8 and is connected to the second screw hole 9. In practice, the angle between the bent portion 8 and the main body of the slider 4 is preferably nearly 90°, so that the slider 4 can be well ensured to be arranged parallel to the pull rod 3, and then to be arranged parallel to the first lens holder 1, so that when it is installed in the cavity of the sight housing in the future, all components have good coaxiality, which is beneficial to the guarantee of the sight accuracy.

[0048] In order to facilitate positioning and assembly, the rear end surface of the pull rod 3 provided in this embodiment is a concave spherical surface 12; the step surface of the step hole 1 of the slider 4 is arranged at Figure 4 The front end face of the bent portion 8 shown in FIG. Figure 5 The concave spherical surface 50 is shown, and the rear end surface coincides with the rear end surface of the step hole 11; and the step surface of the step hole 11 is arranged from the inside to the outside in sequence. Figure 1 The elastic washer 18 and the first spherical gasket 51 shown in the figure have a spherical surface and a Figure 3 The concave spherical surface 12 shown is matched; and Figure 5 The concave spherical surface 2 50 is provided in Figure 1 The second spherical gasket 52 is shown, and the second spherical gasket 52 matches the spherical surface of the first spherical gasket 51; the spherical surfaces of the first spherical gasket 51 and the second spherical gasket 52 are both convex spherical surfaces.

[0049] Depend on Figure 1 It can be seen that in this embodiment, the front outer side surface of the pull rod 3 is a spherical surface, which is placed in the spherical cavity at the rear end of the first lens mounting seat 1; the retaining ring 13 is sleeved on the spherical surface, and the retaining ring 13 is threadedly connected with the threaded surface at the rear side of the spherical cavity; the front side of the inner surface of the retaining ring 13 is an arc surface with a radius greater than the ball diameter of the spherical surface, and the rear side of the inner surface of the retaining ring 13 is an inner convex ring 14 with a radius smaller than the ball diameter of the spherical surface. The retaining ring 13 (actually, a threaded retaining ring with threads on the outer wall) is threadedly connected with the spherical cavity at the rear end of the first lens mounting seat 1, and the inner convex ring 14 is provided, so that the connection between the pull rod 3 and the first transparent mounting seat 1 is achieved. At the same time, the spherical contact surface of the two enhances the flexible contact and flexibility of the contact surface, avoiding the operation obstruction caused by the jamming and jamming phenomenon during use.

[0050] Depend on Figure 4 It can be seen that the bottom surface 33 of the slider 4 is a corrugated surface, which is used for the slider 4 to be installed in the sight. Fig.12 A spring push pin assembly consisting of a steel ball 34, a spring 35 and a screw 36 is installed on the shell of the sight shown in the figure. The steel ball 34 is pressed against the bottom surface 33. When the slider 4 moves, the frictional clicking sound helps the operator to roughly know the focal length adjustment distance, thereby improving the comfort and convenience of use. At the same time, this structure is reliably positioned, and the inertia of the impact vibration will not cause the focusing structure to shift when the firearm is fired, thereby avoiding changes in the output light spot angle.

[0051] In order to make the interaction between the shift block 6 and the slider 4 more stable, a hollow shift rod 16 is provided on the bottom surface of the shift block 6 in this embodiment, and the lower end of the hollow shift rod 16 can be inserted into the first screw hole 5, and the screw rod of the first screw 7 is placed in the hollow shift rod 16 and extends downward to be connected with the first screw hole 5. In this way, the intersection and overlapping area of ​​the shift block 6 and the slider 4 is enhanced by the hollow shift rod 16 inserted into the first screw hole 5, and when installed in the housing of the sight, the hollow shift rod 16 is pressed tightly into the first screw hole 5 by the fastener, thereby ensuring the stability of the connection between the two.

[0052] Based on the above lens position adjustment mechanism, this embodiment provides a Figure 6 , 7 , 8 and 9 (equivalent to the three-in-one light source fixing member integrating three laser modules in the prior art, the prior art here refers to the light source fixing member in the invention patent No. 201320495338.X or the three-in-one laser module in the invention patent No. 201820873768.3), by Figure 7 or Fig. 9It can be seen that the laser core includes an inner core shell 19, and a lens mounting cavity 20 extending along the length direction is opened on one side of the inner core shell 19 (similar to the mounting cavity of the first laser module in the invention patent No. 201320495338.X). The front end of the lens mounting cavity 20 is sequentially mounted with a photodiode 22 placed on the top of a fixing seat 21, a second lens 24 fixed on a second lens mounting seat 23 (see the position relationship for details). Fig. 9 ); The special feature of the laser core is that its focusing mechanism is the aforementioned embodiment, that is, Figure 1 The lens position adjustment mechanism shown in the figure; that is, the lens position adjustment mechanism is installed in the lens installation cavity 20 and is placed at the rear side of the fixed seat 21 (the right hand side of the viewer is the rear). Specifically, the first lens mounting seat 1 of the lens position adjustment mechanism is installed in the lens installation cavity 20, and the first lens mounting seat 1 is placed at the rear side of the fixed seat 21; at the same time, the rear end of the first lens mounting seat 1 is located at the rear end of the lens installation cavity 20, which is convenient for the connection of the pull rod 3 and ensures that the adjustment range of the focus distance has a large axial space. The slider 4 of the lens position adjustment mechanism is arranged in parallel on the outside of the inner core shell 19 (see Fig.14 ).

[0053] In this embodiment, a laser tube LD27 is also added, as shown in the specific figure. Figure 7 As shown, a radially penetrating slide groove 25 is provided on the side wall of the first lens mounting seat 1, and the slide groove 25 is placed between the front end and the rear end of the first lens mounting seat 1; a laser tube holder 26 is provided at the rear end of the slide groove 25, and a laser tube LD27 is installed at the front end of the laser tube holder 26, so that the emitted light of the laser tube LD is emitted forward to the first lens 2. In order to ensure the fixation of the position of the laser tube LD, in this embodiment, two opposite third screws 28 are passed through the stepped holes on the inner core shell 19 from the outside, and are fixedly connected with the screw holes on the laser tube holder 26, that is, the top surface and the bottom surface of the laser tube holder 26 are respectively located at the upper opening and the lower opening of the slide groove 25. In actual application, the top surface and the bottom surface of the laser tube holder 26 can extend to the outer side of the upper opening and the lower opening of the slide groove 25, respectively.

[0054] In this embodiment, the first lens 2 is a beam expander lens, and the second lens 24 is a convex lens. At the same time, it should be noted that the photodiode 22 is used to feed back the energy received from the laser tube LD27 to the main control board 41 (see Fig.10 ), so that the energy per unit area of ​​the light beam passing through the second lens 24 is consistent.

[0055] Based on the aforementioned laser core, this embodiment provides a Fig.10 , 11, 12, 13, 14 and 15, the laser sights include a sight housing 29, one side of the sight housing 29 is provided with the laser core 30 provided in the above embodiment, and the other side is provided with a battery compartment 38; the top surface of the sight housing 29 is provided with a Fig.12 The strip-shaped through hole 31 shown in the figure, the shift block 6 is as shown in the figure Fig.15 As shown, the outer side of the strip-shaped through hole 31 is placed outside the top surface of the sight housing 29, and the first screw 7 passes through the shift block 6 and is connected to the Fig.13 The first screw hole 5 shown is arranged inside the strip-shaped through hole 31, and the connection between the shift block 6 and the slider 4 is completed (the slider 4 is arranged inside the sight housing 29 and between the laser core 30 and the battery compartment 38); the length of the shift block 6 is greater than the length of the strip-shaped through hole 31, so that when the shift block 6 drives the slider 4 to move along the length direction of the strip-shaped through hole 31, the shift block 6 is always on the outside of the strip-shaped through hole 31.

[0056] The lower end of the hollow lever 16 on the bottom surface of the shift block 6 is inserted into the first screw hole 5, and the screw rod of the first screw 7 is placed in the hollow lever 16 and extends downward to connect with the first screw hole 5, thereby enhancing the reliability of the connection between the shift block 6 and the slider 4.

[0057] The bent portion 8 formed by the rear end of the slider 4 extending toward one side of the pull rod 3 is connected to the second screw hole 9 provided at the rear end of the pull rod 3 through the second screw 10. Fig.13 It can be seen that the bent portion 8 bends and extends toward the laser core.

[0058] Depend on Fig.10 It can be seen that the laser sight provided in this embodiment also includes a button switch 43, a toggle switch 44, an indicator light 45, a battery cover assembly 46 and a lens assembly 47, and Fig.14 The drive board 40, main control board 41, rear cover assembly 42 and laser inner core pressure ring 48 shown are all conventional technologies and will not be described in detail here.

Claims

1. A lens position adjustment mechanism, comprising a first lens mounting seat (1), and a first lens (2) mounted at the front end of the first lens mounting seat (1), characterized in that: It also comprises a pull rod (3), the front end of which is fixedly connected to the rear end of the lens mounting seat (1), and the rear end of which is connected to a slider (4); the slider (4) is arranged parallel to the first lens mounting seat (1) and extends forward along the axial direction of the first lens mounting seat (1); A first screw hole (5) is provided on the front end top surface of the sliding block (4), and a shifting block (6) disposed above the first screw hole (5) is connected to the first screw hole (5) via a first screw (7) penetrating the thickness direction of the shifting block (6).

2. The lens position adjustment mechanism according to claim 1, characterized in that: The rear end of the slider (4) extends toward one side of the pull rod (3) to form a bent portion (8); the rear end of the pull rod (3) is provided with a second screw hole (9); The second screw (10) passes through the stepped hole (11) on the bent portion (8) from the rear to the front and is connected to the second screw hole (9).

3. The lens position adjustment mechanism according to claim 2, characterized in that: The rear end surface of the pull rod (3) is a concave spherical surface (12); The step surface of the step hole (11) is arranged on the front end surface of the bending portion (8), the rear end surface of the bending portion (8) is a second concave spherical surface (50), and the rear end surface coincides with the rear end surface of the step hole (11); An elastic gasket (18) and a first spherical gasket (51) are arranged in sequence from the inside to the outside on the step surface of the step hole (11), and the spherical surface of the first spherical gasket (51) matches with the first concave spherical surface (12); a second spherical gasket (52) is arranged in the second concave spherical surface (50), and the second spherical gasket (52) matches with the spherical surface of the first spherical gasket (51); the spherical surfaces of the first spherical gasket (51) and the second spherical gasket (52) are both convex spherical surfaces.

4. The lens position adjustment mechanism according to claim 1, characterized in that: The front outer side surface of the pull rod (3) is a spherical surface, which is placed in the spherical cavity at the rear end of the first lens mounting seat (1); the retaining ring (13) is sleeved on the spherical surface, and the retaining ring (13) is threadedly connected to the threaded surface at the rear side of the spherical cavity; the front side of the inner surface of the retaining ring (13) is an arcuate surface with a radius greater than the spherical diameter of the spherical surface, and the rear side of the inner surface of the retaining ring (13) is an inner convex ring (14) with a radius smaller than the spherical diameter of the spherical surface.

5. The lens position adjustment mechanism according to claim 1, characterized in that: The bottom surface of the sliding block (4) is a corrugated surface.

6. The lens position adjustment mechanism according to claim 1, characterized in that: A hollow lever (16) is provided on the bottom surface of the shift block (6), the lower end of the hollow lever (16) can be inserted into the first screw hole (5), and the screw rod of the first screw (7) is placed in the hollow lever (16) and extends downward to be connected with the first screw hole (5).

7. A laser inner core, comprising an inner core shell (19), a lens mounting cavity (20) extending in the length direction is provided on one side of the inner core shell (19), a photodiode (22) placed on the top of a fixing seat (21) and a second lens (24) fixed on a second lens mounting seat (23) are sequentially installed at the front end of the lens mounting cavity (20) from the inside to the outside; characterized in that: Also includes the lens position adjustment mechanism of claim 1; The first lens mounting seat (1) is mounted in the lens mounting cavity (20), and the first lens mounting seat (1) is placed on the rear side of the fixing seat (21); The rear end of the first lens mounting seat (1) is located at the rear end of the lens mounting cavity (20); The slider (4) is arranged in parallel on the outer side of the inner core shell (19); A radially penetrating slide groove (25) is provided on the side wall of the first lens mounting seat (1), and the slide groove (25) is disposed between the front end and the rear end of the first lens mounting seat (1); A laser tube holder (26) is arranged at the rear end of the slide groove (25), and a laser tube LD (27) is installed at the front end of the laser tube holder (26); Two opposite third screws (28) pass through the stepped holes on the inner core shell (19) from the outside and are fixedly connected to the screw holes on the laser tube seat (26) respectively.

8. A laser sight, comprising a sight housing (29), characterized in that: The sight housing (29) is provided with the laser core (30) according to claim 7; A strip-shaped through hole (31) is provided on the top surface of the sight housing (29); the shift block (6) is placed outside the strip-shaped through hole (31); and the first screw (7) passes through the shift block (6) and is connected to a first screw hole (5) placed inside the strip-shaped through hole (31); The length of the shifting block (6) is greater than the length of the strip-shaped through hole (31), so that when the shifting block (6) drives the sliding block (4) to move along the length direction of the strip-shaped through hole (31), the shifting block (6) is always located outside the strip-shaped through hole (31).

9. The laser sight according to claim 8, characterized in that: A hollow shift rod (16) is provided on the bottom surface of the shift block (6), the lower end of the hollow shift rod (16) is inserted into the first screw hole (5), and the screw rod of the first screw (7) is placed in the hollow shift rod (16) and extends downward to be connected with the first screw hole (5).

10. The laser sight according to claim 9, characterized in that: The rear end of the slider (4) extends toward one side of the pull rod (3) to form a bent portion (8); a second screw hole (9) is provided at the rear end of the pull rod (3); a second screw (10) passes through a through hole (11) on the bent portion (8) and is connected to the second screw hole (9).

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