Glass window protective cover of demarcation device and demarcation device

Abstract

The utility model discloses a demarcation device glass window protection cover and a demarcation device, the demarcation device glass window protection cover comprises a base, a cover body arranged opposite to the base and a connecting piece respectively inserted into the base and the cover body, and the base, the cover body and the connecting piece are enclosed to form a space for accommodating a glass window. The manufacturing cost, the assembling difficulty and the assembling cost of the base, the cover body and the connecting piece are relatively low, the manufacturing cost of the protective cover for the glass window of the demarcation device can be reduced, and the production efficiency and the yield of the protective cover for the glass window of the demarcation device are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of line casting instruments, and particularly relates to a glass window protective cover for a line casting instrument and the line casting instrument. Background Art

[0002] Line projection devices are widely used in fields such as construction projects. They can accurately project laser lines onto work objects to assist workers in construction.

[0003] Existing laser projectors typically consist of a laser head, a glass window protecting the laser head, and a protective cover protecting the glass window. The protective cover is circumferentially provided with multiple windows to block the laser beam. Existing protective covers are typically integrally formed through injection molding or casting. This process requires a core-pulling process, which is costly, difficult, and has a low yield rate. Furthermore, the integrally formed protective cover has wide connecting studs on either side of the windows, which can easily obstruct the laser beam emitted by the laser head.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a glass window protective cover for a projection instrument, which is used to solve the problems of high manufacturing cost, great manufacturing difficulty and low yield of the glass window protective cover for the projection instrument.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides a glass window protective cover for a projection instrument, which includes a base, a cover body arranged opposite to the base, and connecting parts respectively plugged into the base and the cover body, and a space for accommodating the glass window is formed between the base, the cover body and the connecting parts.

[0007] In one or more embodiments of the present invention, a first socket for inserting the connector is provided on a side of the base close to the cover, and a second socket for inserting the connector is provided on a side of the cover close to the base.

[0008] In one or more embodiments of the present invention, one end of the connector close to the base is in interference connection with the first socket.

[0009] In one or more embodiments of the present invention, one end of the connector close to the cover is in interference connection with the second insertion hole.

[0010] In one or more embodiments of the present invention, one end of the connector close to the base is fixed in the first plug hole by an adhesive.

[0011] In one or more embodiments of the present invention, one end of the connector close to the cover is fixed in the second insertion hole by adhesive.

[0012] In one or more embodiments of the present invention, the base is detachably connected to the connecting member.

[0013] In one or more embodiments of the present invention, the cover body is detachably connected to the connecting piece.

[0014] In one or more embodiments of the present invention, the cross section of the connecting member perpendicular to its central axis is circular and the diameter of the cross section is less than or equal to 1 mm.

[0015] In one or more embodiments of the present invention, the distance between the end of the connecting member close to the base and the central axis of the base is greater than the distance between the end of the connecting member close to the cover and the central axis of the base.

[0016] In one or more embodiments of the present invention, the angle between the central axis of the connecting member and the plane where the base is located is in the range of 60° to 80°.

[0017] In one or more embodiments of the present invention, the base is made of metal or plastic.

[0018] In one or more embodiments of the present invention, the cover is made of metal or plastic.

[0019] In one or more embodiments of the present invention, the connecting piece is made of metal or plastic.

[0020] On the other hand, the utility model further provides a line projection instrument, which includes the above-mentioned line projection instrument glass window protective cover.

[0021] Compared with the existing technology, the glass window protective cover of the projection instrument of the present invention is assembled by a base, a cover body and connecting parts, avoiding the use of traditional mold core-pulling process to manufacture the glass window protective cover of the projection instrument. Since the manufacturing cost, assembly difficulty and assembly cost of the base, cover body and connecting parts are relatively low, the manufacturing cost of the glass window protective cover of the projection instrument can be reduced, and the production efficiency and yield rate of the glass window protective cover of the projection instrument can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0023] Figure 1 This is a three-dimensional structural diagram of a glass window protective cover of a line projection instrument in one embodiment of the present utility model;

[0024] Figure 2 This is an exploded structural diagram of a glass window protective cover of a line projection instrument in one embodiment of the present utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of a base in one embodiment of the present utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of a cover body in one embodiment of the present invention;

[0027] Figure 5 This is a three-dimensional structural diagram of the glass window protective cover and the glass window of the line projection instrument in one embodiment of the present invention.

[0028] Explanation of main reference numerals: 1. base, 11. first insertion hole, 12. threaded hole, 2. cover, 21. second insertion hole, 3. connector, 4. glass window. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0030] In one embodiment, referring to Figure 1 and Figure 2 As shown, the present invention provides a glass window protective cover for a projection instrument, which includes a base 1, a cover 2, and a connector 3. The base 1 and the cover 2 are arranged opposite each other, and the two ends of the connector 3 are respectively plugged into the base 1 and the cover 2. A space for accommodating a glass window 4 is formed between the base 1, the cover 2, and the connector 3.

[0031] According to the above structural design, the glass window protective cover of the projection instrument is assembled by the base 1, the cover 2 and the connector 3. Compared with the traditional mold core pulling process, the manufacturing costs of the base 1, the cover 2 and the connector 3 are relatively low, and the assembly difficulty and assembly cost are also relatively low, which can greatly reduce the manufacturing cost of the glass window protective cover of the projection instrument and improve the production efficiency of the glass window protective cover of the projection instrument.

[0032] In addition, the manufacturing process of the base 1, the cover 2 and the connector 3 is relatively simple, and they are not easily damaged during the manufacturing process, which can improve the overall yield rate of the glass window protective cover of the projection instrument during the manufacturing process.

[0033] Based on the above structure, since the traditional mold core-pulling process is not adopted, the manufacturing processes of the base 1, the cover 2 and the connector 3 are relatively independent. Reducing the size of the cross section of the connector 3 will basically not affect the overall manufacturing difficulty and production efficiency of the projection instrument glass window protective cover. Therefore, the manufacturer can appropriately reduce the size of the cross section of the connector 3 according to actual needs to reduce the light-blocking width of the connector 3.

[0034] In one embodiment, the cross-section of the connecting member 3 perpendicular to its central axis is circular, and the diameter of the cross-section is less than or equal to 1 mm, so as to reduce the light-blocking width of the connecting member 3 to within 1 mm. The light-blocking width of the traditional one-piece projector glass window protective cover is generally around 2.5 mm. Due to the limitations of production technology and production costs, it is basically impossible to reduce the light-blocking width.

[0035] Reference Figure 3 As shown, a first insertion hole 11 for inserting the connector 3 is provided on one side of the base 1 close to the cover 2 , and a second insertion hole 21 for inserting the connector 3 is provided on one side of the cover 2 close to the base 1 .

[0036] Furthermore, the cross-sections of the base 1 and the cover 2 are rectangular or similar in shape, and there are four first sockets 11 and four second sockets 21, each of which is disposed at the four corners of the base 1 and the four corners of the cover 2. Furthermore, there are four corresponding connectors 3, with each connector 3 having two ends that are inserted into the corresponding first socket 11 and second socket 21.

[0037] In order to ensure the connection strength between the base 1 and the cover body 2 and the connecting member 3, and to avoid the base 1 and the cover body 2 and the connecting member 3 from being disconnected during use, as a preferred example, the end of the connecting member 3 close to the base 1 is in interference connection with the first hole 11, and the end of the connecting member 3 close to the cover body 2 is in interference connection with the second hole 21, so as to ensure the connection strength between the base 1 and the cover body 2 and the connecting member 3.

[0038] When the connector 3 is plugged into the first plug hole 11 and the second plug hole 21 , a pressing tool can be used to assist in the installation.

[0039] As another preferred example, the end of the connector 3 close to the base 1 is fixed in the first socket 11 by an adhesive, and the end of the connector 3 close to the cover 2 is fixed in the second socket 21 by an adhesive. The adhesive should be distributed in various areas of the first socket 11 and the second socket 21 as much as possible.

[0040] In one embodiment, a more flexible connection method may be selected between the base 1 , the cover 2 and the connector 3 , such as a detachable connection method.

[0041] As a preferred example, the base 1 and cover 2 can be fixedly connected to the connector 3 using bolts. Specifically, a plate-like structure is provided at both ends of the connector 3, with a perforation formed in the plate-like structure. The base 1 and cover 2 are provided with threaded holes 12 corresponding to the perforations. Bolts are provided in the perforations and threaded holes 12 to ensure that the base 1 and cover 2 maintain a stable connection with the connector 3. When the base 1 or cover 2 needs to be disassembled, the corresponding bolts can be removed.

[0042] Reference Figure 1 As shown, the distance between the end of the connecting member 3 close to the base 1 and the central axis of the base 1 is greater than the distance between the end of the connecting member 3 close to the cover 2 and the central axis of the base 1, that is, the end of the connecting member 3 close to the base 1 is inclined toward the inside.

[0043] Furthermore, the angle between the central axis of the connecting member 3 and the plane where the base 1 is located ranges from 60° to 80°, and can be specifically set to 65°, 70° or 75°.

[0044] Preferably, the cross-sectional area of ​​the cover 2 is smaller than the cross-sectional area of ​​the base 1 .

[0045] In one embodiment, the base 1, the cover 2, and the connector 3 can be made of metal materials. Specifically, the base 1 and the cover 2 can be made of aluminum or an aluminum alloy. The connector 3 can be made of alloy steel.

[0046] In another embodiment, the base 1 , the cover 2 and the connecting member 3 may be made of plastic material.

[0047] Reference Figure 5 As shown, in order to facilitate the installation of the glass window protective cover of the line projection instrument on the line projection instrument, the base 1 is provided with a plurality of threaded holes 12, and the threaded holes 12 are used to install bolts, and the base 1 is fixed to the line projection instrument by the bolts.

[0048] Preferably, four threaded holes 12 may be provided, and the threaded holes 12 are respectively provided at the four corners of the base 1 .

[0049] In one embodiment, the present invention further provides a line projection instrument, which includes the above-mentioned glass window 4 protective cover.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0051] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A protective cover for a glass window of a projection instrument, characterized in that: The glass window protective cover of the projection instrument includes a base, a cover body arranged opposite to the base, and connectors respectively plugged into the base and the cover body. A space for accommodating the glass window is formed between the base, the cover body and the connector.

2. The glass window protective cover of the projection instrument according to claim 1, characterized in that: A first plug hole for the connector is provided on one side of the base close to the cover, and a second plug hole for the connector is provided on one side of the cover close to the base.

3. The glass window protective cover of the projection instrument according to claim 2, characterized in that: One end of the connector close to the base is interference-connected with the first socket; and / or, One end of the connecting piece close to the cover body is interference-connected with the second plug hole.

4. The glass window protective cover of the projection instrument according to claim 2, characterized in that: One end of the connector close to the base is fixed in the first socket by adhesive; and / or, One end of the connecting piece close to the cover is fixed in the second insertion hole by adhesive.

5. The glass window protective cover of the projection instrument according to claim 1, characterized in that: The base is detachably connected to the connecting piece; and / or, The cover body is detachably connected to the connecting piece.

6. The glass window protective cover of the projection instrument according to claim 1, characterized in that: The cross section of the connecting member perpendicular to its central axis is circular and the diameter of the cross section is less than or equal to 1 mm.

7. The glass window protective cover of the projection instrument according to claim 1, characterized in that: The distance between one end of the connecting member close to the base and the central axis of the base is greater than the distance between one end of the connecting member close to the cover and the central axis of the base.

8. The protective cover for the glass window of the projection instrument according to claim 1, characterized in that: The included angle between the central axis of the connecting piece and the plane where the base is located is in the range of 60° to 80°.

9. The glass window protective cover of the projection instrument according to claim 1, characterized in that: The base is made of metal or plastic; and / or, The cover is made of metal or plastic; and / or, The connecting piece is made of metal material or plastic.

10. A line casting instrument, characterized in that: The invention comprises the glass window protective cover of the projection instrument as claimed in any one of claims 1 to 9.

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