Lens device

Abstract

The utility model provides a lens device, relates to clamp technical field, the lens device includes: ring cavity subassembly, drawer subassembly and elastic washer, the ring cavity subassembly is provided with the accommodation cavity, ring cavity subassembly includes first side wall and second side wall that are arranged oppositely, first side wall and second side wall are respectively provided with coaxial light through hole; the drawer assembly comprises a fixed seat, a movable seat and a lens, and the lens is connected with the movable seat; an adjusting structure is arranged between the movable seat and the fixed seat and is used for adjusting the position of the movable seat relative to the fixed seat on the adjusting surface; the drawer assembly is installed in the containing cavity, an elastic gasket is arranged between the side wall of the movable base and the first side wall, the elastic gasket is used for extruding the movable base towards one side of the second side wall so that the second side wall and the elastic gasket can clamp the movable base, and the first side wall, the second side wall and the adjusting face are arranged in parallel.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamp technical field especially is related to a lens device. BACKGROUND

[0002] In the laser cutting process, the center of the lens needs to be adjusted, so that the light emitted by the laser emitter passes through the beam shaping and reaches the cutting copper nozzle on a line, ensuring normal cutting. If the center of the lens is not adjusted, the aperture of the copper nozzle is small, and when cutting the plate material, especially the slightly thick plate material such as carbon steel or stainless steel, the actual cutting focal point position is on the upper or lower part of the plate material, and the copper nozzle position has a certain diameter of light spot. In addition, there are certain errors in the actual processing of the lens and the machined parts, which can easily cause a certain deviation in the light path, so that part of the light beam hits the copper nozzle, which causes the copper nozzle to heat up and affect the cutting quality and cutting effect. If the time is long, it will also cause the copper nozzle to be damaged, and even the lens to be damaged. Therefore, a lens center adjustment structure needs to be designed.

[0003] In the prior art, the center adjustment structure may cause the lens to tilt relative to the adjustment plane, that is, the lens no longer moves on the preset adjustment plane, but rotates, causing the outgoing light to deviate. SUMMARY

[0004] The utility model aims at providing a lens device to alleviate the technical problem that the existing lens center adjustment structure may rotate during adjustment.

[0005] The utility model provides a lens device, which comprises a ring cavity assembly, a drawer assembly and an elastic gasket, the ring cavity assembly is provided with a containing cavity, the ring cavity assembly comprises a first side wall and a second side wall arranged oppositely, coaxial light holes are arranged on the first side wall and the second side wall respectively;

[0006] The drawer assembly comprises a fixed seat, a moving seat and a lens, the lens is connected with the moving seat, an adjustment structure is arranged between the moving seat and the fixed seat, and the adjustment structure is used for adjusting the position of the moving seat relative to the fixed seat on the adjustment surface;

[0007] The drawer assembly is installed in the containing cavity, the elastic gasket is arranged between the side wall of the moving seat and the first side wall, the elastic gasket is used for extruding the moving seat towards the second side wall side, so that the second side wall and the elastic gasket clamp the moving seat, and the first side wall, the second side wall and the adjustment surface are arranged in parallel.

[0008] Further, the moving seat is provided with a mounting hole, and a boss protruding radially inward is arranged on the inner wall of the mounting hole.

[0009] The drawer assembly further comprises a locking member connected with the mounting hole, so that the front and back ends of the lens located in the mounting hole are respectively abutted between the locking member and the boss.

[0010] Further, the mounting hole is threadedly connected with the locking member.

[0011] Further, the end of the locking member abutting with the lens is elastic.

[0012] Further, a first sealing ring is arranged between the second side wall and the moving seat.

[0013] Further, the adjusting structure comprises a first elastic abutting member and a first threaded abutting member arranged in a first diagonal direction of the fixed seat, and a second elastic abutting member and a second threaded abutting member arranged in a second diagonal direction of the fixed seat, the first diagonal direction and the second diagonal direction are arranged in a cross manner, and the plane formed by the first diagonal direction and the second diagonal direction is parallel to the adjusting surface.

[0014] The fixed seat has a hollow region accommodating the moving seat, and the abutting ends of the first elastic abutting member, the first threaded abutting member, the second elastic abutting member and the second threaded abutting member all extend into the hollow region and abut with the circumferential side wall of the moving seat.

[0015] The first threaded abutting member and the second threaded abutting member are both threadedly connected with the fixed seat, so that the lengths of the portions of the first threaded abutting member and the second threaded abutting member extending into the hollow region are adjustable.

[0016] Further, the first elastic abutting member and the second elastic abutting member are both wave bead set screws.

[0017] Further, the first threaded abutting member and the second threaded abutting member both comprise a screw rod, and the screw rod is threadedly connected with the fixed seat.

[0018] The end of the screw rod close to the moving seat is rollingly connected with a ball, and the ball abuts with the moving seat.

[0019] Further, a second sealing ring is arranged between the screw rod and the fixed seat.

[0020] Further, a plurality of reinforcing pieces are arranged on the side wall of the moving seat, the hardness of the reinforcing pieces is greater than the hardness of the moving seat, and the reinforcing pieces are used for abutting with the abutting ends of the first elastic abutting member, the first threaded abutting member, the second elastic abutting member and the second threaded abutting member.

[0021] The utility model at least has following advantages or beneficial effects:

[0022] The lens device provided by the utility model discloses a ring cavity assembly, a drawer assembly and an elastic gasket, the ring cavity assembly is provided with a containing cavity, the ring cavity assembly comprises oppositely arranged first side walls and second side walls, coaxial light holes are arranged on the first side walls and the second side walls respectively, the drawer assembly comprises a fixed seat, a moving seat and a lens, the lens is connected with the moving seat, an adjusting structure is arranged between the moving seat and the fixed seat, the adjusting structure is used for adjusting the position of the moving seat on an adjusting surface relative to the fixed seat, the drawer assembly is installed in the containing cavity, and the elastic gasket is arranged between the side wall of the moving seat and the first side wall, the elastic gasket is used for extruding the moving seat to the side of the second side wall, so that the second side wall and the elastic gasket clamp the moving seat, and the first side wall, the second side wall and the adjusting surface are arranged in parallel.

[0023] The drawer assembly is located inside the containing cavity of the ring cavity assembly, and the moving seat on the drawer assembly can move on the adjusting surface, so that the position of the lens is adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0025] Figure 1 The top view of the lens device provided by the embodiments of the utility model is provided.

[0026] Figure 2 The Figure 1 The sectional view in the K-K direction in the middle is provided.

[0027] Figure 3 The Figure 1 The sectional view in the J-J direction in the middle is provided.

[0028] Figure 4 The exploded view of the lens device provided by the embodiments of the utility model is provided.

[0029] Icon: 101 - fixed seat; 102 - moving seat; 103 - lens; 104 - locking piece; 105 - elastic washer; 106 - wave bead set screw; 107 - reinforcing sheet; 108 - first sealing ring; 109 - ball; 110 - second lower sealing ring; 111 - screw; 112 - cover plate; 113 - third sealing ring; 114 - screw rod; 115 - second upper sealing ring; 116 - positioning pin; 201 - front shell; 202 - rear shell. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0032] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, 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 indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term '' set '', '' install '', '' link '', '' connect '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the above-mentioned terms can be understood in the utility model with the specific meaning of the specific situation.

[0036] As Figure 1 - Figure 4 The lens device provided by the utility model comprises a ring cavity assembly, a drawer assembly and an elastic gasket 105.

[0037] The ring cavity assembly comprises a front shell 201 and a rear shell 202 made of metal, which are connected through screws 111 along the front-rear direction to form a containing cavity, and the top of the ring cavity assembly has an opening for the drawer assembly to be inserted into the containing cavity; the ring cavity assembly further comprises a cover plate 112, which is connected with the front shell 201 and the rear shell 202 through the screws 111 respectively, and the cover plate 112 blocks the opening of the containing cavity to make the containing cavity closed and reduce the entry of dust; a third sealing ring 113 can be arranged between the cover plate 112 and the fixed seat 101, and the third sealing ring 113 can be a nitrile rubber sealing gasket.

[0038] The ring cavity assembly comprises oppositely arranged first and second side walls, i.e., the front and rear walls in the embodiment. Coaxial light holes are arranged on the first and second side walls respectively, and light passes through one light hole, the lens 103 and then exits from the other light hole.

[0039] The drawer assembly comprises a fixed seat 101, a moving seat 102 and a lens 103, the lens 103 is fixedly connected with the moving seat 102, and the two are fixed relative to each other. An adjusting structure is arranged between the moving seat 102 and the fixed seat 101, and the adjusting structure is used for adjusting the position of the moving seat 102 on the adjusting surface relative to the fixed seat 101, so as to adjust the centration.

[0040] The drawer assembly is installed in the containing cavity, and the elastic gasket 105 is arranged between the rear side wall of the moving seat 102 and the first side wall. The cross-sectional shape of the elastic gasket 105 can be U-shaped, and the elastic gasket 105 can be arranged in the first clamping groove in the rear end face of the moving seat 102. The elastic gasket 105 is used for extruding the moving seat 102 towards the second side wall, so that the second side wall and the elastic gasket 105 clamp the moving seat 102, and the first side wall, the second side wall and the adjusting surface are arranged in parallel.

[0041] The drawer assembly is located inside the containing cavity of the ring cavity assembly, and the moving seat 102 on the drawer assembly can move on the adjusting surface to adjust the position of the lens 103. The front and back of the moving seat 102 have a first side wall and a second side wall respectively, and in order to realize the installation of the drawer assembly, the distance between the first side wall and the second side wall must be greater than the distance of the front and back walls of the moving seat 102, therefore, in the present scheme, in order to avoid the rotation of the moving seat 102, an elastic washer 105 is arranged between the moving seat 102 and the first side wall, the elastic washer 105 is squeezed to generate elastic force, so that the second side wall and the elastic washer 105 clamp the moving seat 102, when the moving seat 102 moves on the adjusting surface, the angle of deflection is reduced, and the parallelism of the extension direction of the through hole with the axis direction of the lens 103 is higher.

[0042] The moving seat 102 is provided with a mounting hole, and the inner wall of the mounting hole is provided with a boss protruding radially inward; the drawer assembly further comprises a locking piece 104, which can be a brass elastic washer 105, the locking piece 104 is connected with the mounting hole, so that the front and back ends of the lens 103 located in the mounting hole are respectively abutted between the locking piece 104 and the boss.

[0043] The setting of the boss can form a stepped structure on the rear side of the mounting hole, and the stepped structure can form a positioning surface of the lens 103, during installation, the lens 103 can be first installed and placed into the mounting hole, and the lens 103 is supported by the boss, then the locking piece 104 is connected with the mounting hole, and the mounting hole and the locking piece 104 can be threadedly connected. Moreover, the end of the locking piece 104 abutting against the lens 103 is elastic to avoid the lens 103 from being cracked due to thermal expansion and cold contraction.

[0044] In order to further increase the sealing performance, a first sealing ring 108 is arranged between the second side wall and the moving seat 102, the first sealing ring 108 can be arranged in the second clamping groove of the front end face of the moving seat 102, the first sealing ring 108 and the elastic washer 105 are respectively arranged on the front and back sides of the moving seat 102 along the front and back directions, and the inner diameters of the two are greater than the outer diameter of the lens 103.

[0045] The adjusting structure comprises a first elastic abutting piece and a first threaded abutting piece arranged in a first diagonal direction of the fixed seat 101, and a second elastic abutting piece and a second threaded abutting piece arranged in a second diagonal direction of the fixed seat 101, the first diagonal direction and the second diagonal direction are arranged in a cross manner, and a plane formed by the first diagonal direction and the second diagonal direction is parallel to the adjusting surface; the fixed seat 101 has a hollow region accommodating the moving seat 102, abutting ends of the first elastic abutting piece, the first threaded abutting piece, the second elastic abutting piece and the second threaded abutting piece all extend into the hollow region and abut against a circumferential side wall of the moving seat 102; the first threaded abutting piece and the second threaded abutting piece are both in threaded connection with the fixed seat 101, so that lengths of portions of the first threaded abutting piece and the second threaded abutting piece extending into the hollow region are adjustable.

[0046] The first elastic abutting piece and the second elastic abutting piece are symmetrically arranged left and right below the fixed seat 101. The first threaded abutting piece and the second threaded abutting piece are symmetrically arranged left and right above the fixed seat 101.

[0047] The first elastic abutting piece and the second elastic abutting piece are both wave bead set screws 106, the wave bead set screw 106 is a heavy load spring structure, a main body of the wave bead set screw 106 is fixed relative to the fixed seat 101 through a threaded structure, and a wave bead is located in the hollow region.

[0048] The first threaded abutting piece and the second threaded abutting piece both comprise a screw rod 114, the screw rod 114 is in threaded connection with the fixed seat 101; one end of the screw rod 114 close to the moving seat 102 is in rolling connection with a ball 109, and the ball 109 abuts against the moving seat 102. The ball 109 can be freely rotated in a press-in type mounting manner.

[0049] The screw rod 114 is in threaded connection with the fixed seat 101 after passing through the cover body, an upper end of the screw rod 114 is exposed outside, and a user can conveniently rotate the screw rod 114. A second upper sealing ring 115 is arranged between the screw rod 114 and a through hole on the cover plate 112, and a second lower sealing ring 110 is arranged between the screw rod 114 and a through hole of the fixed seat 101, so that double-layer sealing is achieved to improve sealing performance.

[0050] The side wall of the moving seat 102 is provided with four reinforcing sheets 107, which are high-strength alloy steel. The four reinforcing sheets 107 are respectively arranged at four diagonals of the moving seat 102. The hardness of the reinforcing sheets 107 is greater than the hardness of the moving seat 102. The reinforcing sheets 107 are used to abut against the abutting ends of the first elastic abutting piece, the first threaded abutting piece, the second elastic abutting piece and the second threaded abutting piece, so as to avoid deformation of the adjusting center moving seat 102 when the adjusting center moving seat 102 is adjusted, and to avoid the generation of light deviation phenomenon caused by the extrusion of the contact position into “small pits” for a long time.

[0051] The light hole position is chamfered, which prevents the elastic gasket 105 and the first sealing ring 108 from being scratched during the installation and movement of the drawer assembly, and prevents the falling impurities from polluting the lens 103.

[0052] During assembly, the fixed seat 101, the moving seat 102, the elastic gasket 105 and the first sealing ring 108 are assembled and then inserted into the ring cavity assembly. The tightness is moderate, the plug-in and pull-out are smooth, and there is a certain resistance.

[0053] The lens 103 can be a spherical single lens 103 or a composite lens 103.

[0054] The top surface of the fixed seat 101 is provided with a positioning pin 116, and the cover plate 112 has a positioning hole. The positioning pin 116 is positioned and inserted into the positioning hole.

[0055] In summary, during work, the two screw rods 114 can be rotated by using an internal hexagonal wrench. When the screw rods 114 move inward or outward, the ball bearings 109 mounted on the screw rods 114 rotate and move, release part of the stress, and push the adjusting center moving seat 102 to move inward or outward. The ball head elastic position of the opposite ball bearing set screw 106 is contracted or stretched, and the adjusting center moving seat 102 is clamped. At the same time, the elastic gasket 105 and the first sealing ring 108 located at the front and rear positions move frictionally inside the drawer, so as to ensure that the vertical position does not change, and ensure that no dust or debris falls to pollute the lens 103 during frictional movement.

[0056] In the present scheme:

[0057] 1. The screw rod 114 in the up-down moving sealing structure in the lens 103 adjusting center structure adopts double sealing, and the sealing effect is good.

[0058] 2. The drawer type structure ensures that the drawer assembly is easy to install and pull out.

[0059] 3. The lens 103 is elastically mounted by the elastic locking piece 104 elastic mounting structure, which has a protection effect and a simple structure.

[0060] Compared with the prior art, the present scheme has at least one of the following advantages:

[0061] 1. Simple structure, easy function and low cost.

[0062] 2. Stable adjustment center, not easy to deviate.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An ophthalmic lens device, characterized in that, The application relates to a ring cavity assembly, a drawer assembly and an elastic gasket (105), wherein the ring cavity assembly is provided with a containing cavity, and the ring cavity assembly comprises oppositely arranged first and second side walls, and coaxial light holes are arranged on the first and second side walls respectively. The drawer assembly comprises a fixed seat (101), a moving seat (102) and a lens (103), the lens (103) is connected with the moving seat (102), an adjusting structure is arranged between the moving seat (102) and the fixed seat (101), and the adjusting structure is used for adjusting the position of the moving seat (102) on an adjusting surface relative to the fixed seat (101). The drawer assembly is arranged in the containing cavity, an elastic gasket (105) is arranged between the side wall of the moving seat (102) and the first side wall, the elastic gasket (105) is used for extruding the moving seat (102) towards the second side wall, so that the second side wall and the elastic gasket (105) clamp the moving seat (102), and the first side wall, the second side wall and the adjusting surface are arranged in parallel. A mounting hole is arranged on the moving seat (102), and a boss protruding radially inward is arranged on the inner wall of the mounting hole.

2. The lens device according to claim 1, wherein The drawer assembly further comprises a locking piece (104), the locking piece (104) is connected with the mounting hole, so that the front and rear ends of the lens (103) located in the mounting hole are respectively abutted between the locking piece (104) and the boss. The mounting hole is threadedly connected with the locking piece (104).

3. The lens device according to claim 2, wherein The end of the locking piece (104) abutting with the lens (103) is elastic.

4. The lens device according to claim 2, wherein A first sealing ring (108) is arranged between the second side wall and the moving seat (102).

5. The lens device according to claim 1, wherein The adjusting structure comprises a first elastic abutting piece and a first threaded abutting piece arranged in a first diagonal direction of the fixed seat (101), and a second elastic abutting piece and a second threaded abutting piece arranged in a second diagonal direction of the fixed seat (101), the first diagonal direction and the second diagonal direction are arranged in a cross manner, and the plane formed by the first diagonal direction and the second diagonal direction is parallel to the adjusting surface.

6. The lens device according to claim 1, wherein The fixed seat (101) has a hollow region containing the moving seat (102), the abutting ends of the first elastic abutting piece, the first threaded abutting piece, the second elastic abutting piece and the second threaded abutting piece all extend into the hollow region and abut with the circumferential side wall of the moving seat (102). The first threaded abutting piece and the second threaded abutting piece are both threadedly connected with the fixed seat (101), so that the lengths of the portions of the first threaded abutting piece and the second threaded abutting piece extending into the hollow region are adjustable. The first elastic abutting piece and the second elastic abutting piece are both wave bead set screws (106).

7. The lens device according to claim 6, wherein The first threaded abutting piece and the second threaded abutting piece both comprise a screw rod (114), and the screw rod (114) is threadedly connected with the fixed seat (101).

8. The lens device of claim 6, wherein, The end of the screw rod (114) close to the moving seat (102) is rollingly connected with a ball (109), and the ball (109) abuts with the moving seat (102). ​ 9. The lens device of claim 8, wherein, A second sealing ring is arranged between the screw rod (114) and the fixed seat (101).

10. The lens device of claim 6, wherein, A plurality of reinforcing sheets (107) are arranged on the side wall of the moving seat (102), the reinforcing sheets (107) have a hardness greater than that of the moving seat (102), and the reinforcing sheets (107) are arranged to abut against the abutting ends of the first elastic abutting piece, the first threaded abutting piece, the second elastic abutting piece and the second threaded abutting piece.

Images