Plastic lens structure of gradienter

Abstract

The plastic lens structure is installed in a frame body of the gradienter, the frame body is provided with a light-transmitting channel, the plastic lens structure comprises a light-transmitting plastic lens base and a projection groove arranged in the light-transmitting channel, and the light-transmitting plastic lens base is provided with an opening in one side; the lens column is arranged in the projection groove, and the two ends of the lens column extend towards the groove wall of the projection groove; wherein the lens column and the light-transmitting plastic lens seat are integrated. The lens column is arranged on the light-transmitting plastic lens seat, and the lens column and the light-transmitting plastic lens seat can be integrally formed through injection molding, so that the production efficiency is improved, and the production cost is reduced by replacing a glass material with a plastic material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of level accessories, and in particular to a level plastic lens structure. BACKGROUND

[0002] As a common measuring tool, the level is widely used in the fields of building construction and mechanical equipment installation, and a laser beam is diffused from a point to a line after passing through an optical mirror rod. The existing optical mirror rod is generally made of glass material and has a cylindrical surface in a mirror state after polishing process. The processing precision requirement of such optical mirror rod is high, resulting in high processing cost, and the optical mirror rod is generally used in levels with high precision requirements.

[0003] However, in some ordinary use scenarios, such as the field of home decoration, the level precision requirement is not high, and the use of the traditional optical mirror rod has high cost. CONTENT OF THE UTILITY MODEL

[0004] In order to reduce the manufacturing cost, the present application provides a level plastic lens structure.

[0005] The level plastic lens structure provided by the present application adopts the following technical scheme:

[0006] A level plastic lens structure is installed in a frame body of a level, the frame body is provided with a light transmission channel, and the level plastic lens structure comprises:

[0007] a light transmission plastic mirror seat provided in the light transmission channel, the light transmission plastic mirror seat has a projection groove with one side open; and

[0008] a mirror column provided in the projection groove, two ends of the mirror column extend towards the groove wall of the projection groove;

[0009] The mirror column and the light transmission plastic mirror seat are integrated.

[0010] Preferably, the light transmission plastic mirror seat is provided with a plurality of circumferentially distributed limiting grooves at the end face.

[0011] Preferably, the limiting groove comprises a vertical segment and an inclined segment, one end of the vertical segment extends towards the end face and the other end is connected to the inclined segment.

[0012] Preferably, the limiting groove further comprises an arc segment connected to the inclined segment.

[0013] Preferably, the light transmission plastic mirror seat further comprises a light transmission gland, the light transmission gland is connected to the upper end of the light transmission plastic mirror seat and used for closing the projection groove.

[0014] Preferably, the light transmission gland comprises a cover body and a connecting portion extending outward from the outer peripheral wall of the cover body, and the connecting portion is clamped in the limiting groove.

[0015] Preferably, the connecting part comprises a guiding section and a positioning section, the guiding section is engaged with the vertical section, and the positioning section is in abutment with the inclined section.

[0016] Preferably, the light-transmitting plastic lens holder further has a ring groove on the outer peripheral wall, and the frame body is connected with a fastener, one end of the fastener being in abutment with the ring groove.

[0017] Preferably, the light-transmitting plastic lens holder further has a ring groove on the outer peripheral wall, and the frame body is connected with a wave bead screw, one end of the wave bead screw extending into the light-transmitting channel and being engaged with the ring groove.

[0018] Preferably, the light-transmitting plastic lens holder is provided with a clamping part at the end face, the clamping part and the connecting part of the light-transmitting plastic lens holder forming a limiting surface; and the light-transmitting channel is provided with a sunken platform, the limiting surface being in abutment with the sunken platform.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] 1. By arranging the lens column on the light-transmitting plastic lens holder, and by integrally injection molding the lens column and the light-transmitting plastic lens holder, the production efficiency is improved, and the production cost is reduced by replacing the glass material with the plastic material.

[0021] 2. By connecting the light-transmitting gland with the light-transmitting plastic lens holder, the lens column is effectively protected, and the connection between the light-transmitting gland and the light-transmitting plastic lens holder adopts the vertical section for rapid introduction connection and the wedge surface of the inclined section for abutment and sealing connection, thereby improving the connection stability.

[0022] 3. By arranging the ring groove on the light-transmitting plastic lens holder, and by combining the fastener or the wave bead screw on the frame body, the installation stability of the light-transmitting plastic lens holder is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural schematic view of a plastic lens of a level instrument according to an embodiment;

[0024] Figure 2 FIG. 2 is an exploded schematic view of the plastic lens of the level instrument according to the embodiment;

[0025] Figure 3 FIG. 3 is a front view of the plastic lens of the level instrument according to the embodiment;

[0026] Figure 4 FIG. 4 is an installation connection view of the plastic lens of the level instrument according to the embodiment;

[0027] Figure 5 FIG. 5 is an installation connection view of a plastic lens of a level instrument according to another embodiment.

[0028] Explanation of reference signs: 1, light-transmitting plastic mirror seat; 11, projection groove; 12, limiting groove; 121, vertical section; 122, inclined section; 123, arc-shaped section; 13, ring groove; 14, clamping part; 15, stepped surface; 2, mirror column; 3, light-transmitting gland; 31, cover body; 32, connecting part; 321, guide section; 322, positioning section; 4, frame body; 41, light-transmitting channel; 42, sink; 5, fastener; 6, wave bead screw; 61, ball. DETAILED DESCRIPTION

[0029] The application will be further described below in conjunction with the accompanying drawings.

[0030] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Embodiment one

[0032] Reference Figure 1 A plastic lens structure of a level is installed at the front end of a level weight frame body 4, and includes a light-transmitting plastic mirror seat 1 which is transparent and cylindrical. The light-transmitting plastic mirror seat 1 has a projection groove 11 which is open at one side, and the projection groove 11 is provided with a mirror column 2 which is long strip-shaped and connected to the groove wall of the projection groove 11 at both ends.

[0033] In this embodiment, the light-transmitting plastic mirror seat 1 and the mirror column 2 are integrally injection molded, and the laser realizes the point-to-line diffusion effect after passing through the mirror column 2.

[0034] The light-transmitting plastic mirror seat 1 is also provided with a plurality of limiting grooves 12 at the upper end surface, and in this embodiment, the limiting grooves 12 are four and circumferentially uniformly distributed. The limiting grooves 12 include a vertical section 121, an inclined section 122 and an arc-shaped section 123 which are sequentially communicated, and the arc-shaped section 123 is at the bottom of the limiting groove 12 for reducing stress concentration of the limiting groove 12.

[0035] The light-transmitting plastic lens holder 1 is provided with a clamping portion 14 on the other end surface. The clamping portion 14 is also in a cylindrical shape and has a smaller diameter than the light-transmitting plastic lens holder 1, so that a step surface is formed at the connection between the clamping portion 14 and the light-transmitting plastic lens holder 1. The light-transmitting plastic lens holder 1 is further provided with a ring groove 13 on the outer peripheral wall, which is used as a positioning groove when the light-transmitting plastic lens holder 1 is installed. Embodiment Two

[0036] For reference Figure 2 With Figure 3 The light-transmitting plastic lens holder 1 is provided with a clamping portion 14 on the other end surface. The clamping portion 14 is also in a cylindrical shape and has a smaller diameter than the light-transmitting plastic lens holder 1, so that a step surface is formed at the connection between the clamping portion 14 and the light-transmitting plastic lens holder 1. The light-transmitting plastic lens holder 1 is further provided with a ring groove 13 on the outer peripheral wall, which is used as a positioning groove when the light-transmitting plastic lens holder 1 is installed.

[0037] The transparent cover includes a cover body 31 and a plurality of connecting portions 32 extending outward from the outer peripheral wall of the cover body 31. The connecting portions 32 can be clamped in the limiting groove 12 to connect the transparent cover with the light-transmitting plastic lens holder 1. Specifically, the connecting portions 32 include a guide segment 321 and a positioning segment 322. The guide segment 321 can be clamped in the vertical segment 121 to quickly connect the transparent cover 3 with the light-transmitting plastic lens holder 1. The positioning segment 322 abuts against the inclined segment 122. The two segments are connected by extrusion and abutment of the wedge surfaces, and further connection is achieved. After the wedge surfaces abut, a certain sealing effect can be achieved, so that the projection groove 11 is sealed after the transparent cover 3 is connected. Embodiment Three

[0038] For reference Figure 4 The light-transmitting plastic lens holder 1 is provided with a clamping portion 14 on the other end surface. The clamping portion 14 is also in a cylindrical shape and has a smaller diameter than the light-transmitting plastic lens holder 1, so that a step surface is formed at the connection between the clamping portion 14 and the light-transmitting plastic lens holder 1. The light-transmitting plastic lens holder 1 is further provided with a ring groove 13 on the outer peripheral wall, which is used as a positioning groove when the light-transmitting plastic lens holder 1 is installed.

[0039] The frame body 4 is further provided with at least one fastener 5. In this embodiment, the fastener 5 is a set screw, which is threadedly connected with the frame body 4. One end of the fastener 5 abuts against the ring groove 13, so that the light-transmitting plastic lens holder 1 is limited in installation in the light-transmitting channel 41. During rotation of the fastener 5, the end portion of the fastener 5 can push the light-transmitting plastic lens holder 1 to radially displace in the light-transmitting channel 41, so that the light beam projection of the light-transmitting plastic lens holder 1 is adjusted. Embodiment Four

[0040] For reference Figure 5The level plastic lens structure is different from the third embodiment in that the wave ball screw 6 is threadedly connected to the frame body 4. The wave ball screw 6 comprises a threaded portion, a ball 61 and an elastic member. The threaded portion is provided with an adjusting groove. The ball 61 is arranged in the adjusting groove. The elastic member is accommodated in the adjusting groove and abuts against the bottom of the adjusting groove at one end and against the ball 61 at the other end. The ball 61 always has a movement trend of moving out of the adjusting groove under the action of the elastic member.

[0041] After the wave ball screw 6 is connected to the frame body 4, the ball 61 partially extends into the light transmission channel 41. When the light transmission plastic lens holder 1 is installed into the light transmission channel 41, the outer wall of the light transmission plastic lens holder 1 extrudes the ball 61 to move toward the side of the adjusting groove. When the ring groove 13 moves to the position of the wave ball screw 6, the ball 61 extends toward the side of the ring groove 13 under the pushing of the elastic member and is finally clamped into the ring groove 13 to limit the light transmission plastic lens holder 1.

[0042] The wave ball screw 6 can adjust the height of the ball 61 protruding from the light transmission channel 41 through the threaded connection between the wave ball screw 6 and the frame body 4, thereby adjusting the firmness of the installation of the light transmission plastic lens holder 1 in the light transmission channel 41.

[0043] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A plastic lens structure for a level, installed inside the frame (4) of the level, wherein the frame (4) has a light-transmitting channel (41), characterized in that, include: A light-transmitting plastic mirror base (1) is provided in the light-transmitting channel (41), and the light-transmitting plastic mirror base (1) has a projection groove (11) with an opening on one side. as well as A mirror column (2) is disposed in the projection groove (11), with both ends of the mirror column (2) extending toward the groove wall of the projection groove (11); The mirror pillar (2) and the light-transmitting plastic mirror base (1) are integrated.

2. The level indicator plastic lens structure according to claim 1, characterized in that, The light-transmitting plastic mirror base (1) has several circumferentially distributed limiting grooves (12) on its end face.

3. The level indicator plastic lens structure according to claim 2, characterized in that, The limiting groove (12) includes a vertical section (121) and an inclined section (122), with one end of the vertical section (121) extending toward the end face and the other end connected to the inclined section (122).

4. The level indicator plastic lens structure according to claim 3, characterized in that, The limiting groove (12) also includes an arc-shaped section (123) that connects to the inclined section (122).

5. The level indicator plastic lens structure according to claim 3, characterized in that, It also includes a light-transmitting cover (3), which is connected to the upper end of the light-transmitting plastic mirror base (1) to close the projection slot (11).

6. The level indicator plastic lens structure according to claim 5, characterized in that, The light-transmitting cover (3) includes a cover body (31) and a connecting part (32) extending outward from the outer peripheral wall of the cover body (31), the connecting part (32) being engaged in the limiting groove (12).

7. The level indicator plastic lens structure according to claim 6, characterized in that, The connecting part (32) includes a guide section (321) and a positioning section (322). The guide section (321) engages with the vertical section (121), and the positioning section (322) abuts against the inclined section (122).

8. The level indicator plastic lens structure according to claim 1, characterized in that, The light-transmitting plastic mirror base (1) also has an annular groove (13) on its outer peripheral wall, and a fastener (5) is connected to the frame (4), with one end of the fastener (5) abutting against the annular groove (13).

9. The level indicator plastic lens structure according to claim 1, characterized in that, The light-transmitting plastic mirror base (1) also has an annular groove (13) on its outer peripheral wall. A ball screw (6) is connected to the frame (4). One end of the ball screw (6) extends into the light-transmitting channel (41) and engages with the annular groove (13).

10. The level indicator plastic lens structure according to claim 1, characterized in that, The light-transmitting plastic mirror base (1) is provided with a locking part (14) at the end face, and the connection between the locking part (14) and the light-transmitting plastic mirror base (1) forms a limiting surface; a recessed platform (42) is provided in the light-transmitting channel (41), and the limiting surface abuts against the recessed platform (42).

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