Spectrophotometer grating seat assembly

Abstract

The utility model discloses a grating seat assembly of a spectrophotometer, which comprises a working surface, a plane module vertically connected with the working surface, a shaft sleeve connected with the plane module and a rotating shaft connected with the shaft sleeve. According to the scheme, the parts are integrally formed through a plastic mold, the cost is low, and the consistency of the parts is very good. In addition, the grating is directly bonded to the grating seat, the structure is simple, debugging is not needed during installation, the requirement for operators is low, and only alignment bonding is needed.

Description

Technical Field

[0001] The utility model relates to the field of spectrophotometers, in particular to a grating seat component of a spectrophotometer. Background Art

[0002] Spectrophotometer is a commonly used analytical instrument used to determine the concentration of substances and analyze the composition of substances. The grating base is a key part of the spectrophotometer, used to support and fix the grating. The grating is a transparent medium with a periodic concave-convex structure that can decompose the incident light into a spectrum of different wavelengths. In the spectrophotometer, the quality of the grating base directly affects the performance and measurement accuracy of the instrument. However, the manufacturing process of the grating base of the existing spectrophotometer is relatively complicated, requiring a fine processing process, and the grating position needs to be constantly debugged during use, which limits the popularity and application of the spectrophotometer. Therefore, it is necessary to design a new type of spectrophotometer grating base to meet the actual needs of the current spectrophotometer use process. Utility Model Content

[0003] In view of the existing problems, the utility model provides a spectrophotometer grating seat assembly, aiming to solve the problems of the existing spectrophotometer grating seat having a complex structure, inconvenient operation, high cost, etc.

[0004] To solve the above problems, the utility model discloses a spectrophotometer grating seat assembly, comprising a working surface, the working surface is vertically connected to a planar module, a sleeve is formed on a side of the planar module away from the working surface, and the sleeve is connected to a rotating shaft.

[0005] Furthermore, a central hole is provided at the center of the planar module, and connecting holes are provided around the central hole.

[0006] Furthermore, a threaded insert is provided inside the central hole.

[0007] Furthermore, the lower end of the rotating shaft is connected to a sector-shaped gear plate, and the sector-shaped gear plate is teeth-connected to the gear.

[0008] Furthermore, a stepping motor is also included, and the gear is connected to the driving shaft of the stepping motor.

[0009] Furthermore, longitudinal and transverse reinforcing ribs are provided on the working surface.

[0010] Furthermore, the working surface, the planar module, the shaft sleeve and the rotating shaft are integrally formed by injection molding of a plastic mold.

[0011] Compared with existing utility models, utility models have the following advantages:

[0012] 1. The whole part is formed in one piece by a plastic mold, which has low cost and very good consistency.

[0013] 2. The grating is directly bonded to the grating base, with simple structure and reliable movement.

[0014] 3. There is no need to debug the grating when installing it, only alignment and bonding are required, which has low requirements for operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a partial structural schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 A front view and a rear view, wherein a is a front view and b is a rear view;

[0017] Figure 3 for Figure 1 A top view of

[0018] Figure 4 It is the overall structural assembly drawing of the utility model.

[0019] In the figure: 1, working surface; 2, plane module; 21, center hole; 22, connecting hole; 3, bushing; 4, rotating shaft; 5, longitudinal and transverse reinforcing ribs; 6, sector gear piece; 7, gear; 8, stepping motor; DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 - Figure 4 A spectrophotometer grating seat assembly includes a working surface 1, the working surface 1 is vertically connected to a plane module 2, a sleeve 3 is formed on a side of the plane module 2 away from the working surface 1, and the sleeve 3 is connected to a rotating shaft 4.

[0022] It should be noted that the integrally formed rotating shaft 4 and sleeve 3 are matching parts, and the upper end face of the rotating shaft 4 matches the inner hole of the lower end face of the sleeve 3; during use, the grating can be directly bonded to the working surface 1, and the size of the working surface 1 is exactly the same as that of the grating. During the assembly process, you only need to align the two to meet the design and use requirements.

[0023] A central hole 21 is provided at the center of the planar module 2 , and connecting holes 22 are provided around the central hole 21 .

[0024] It should be noted that in order to prevent the plane module 2 from deforming during the molding process and also to prevent defects caused by incomplete molding of the plane module 2 , a center hole 21 is reserved at the center axis of the plane module 2 and the rotating shaft 4 .

[0025] A threaded insert is disposed inside the central hole 21 .

[0026] It should be noted that the threaded insert is used to fix the rotating shaft 4 .

[0027] The lower end of the rotating shaft 4 is connected to a sector gear piece 6 , and the sector gear piece 6 is gear-connected to a gear 7 .

[0028] It should be noted that the sector gear piece 6 also has a center hole, which cooperates with the lower end of the shaft 4 to ensure the concentricity of the sector gear piece 6 and the shaft 4;

[0029] The connecting hole 22 is used to connect the grating seat to the parts driving the grating movement. For example, the connecting hole 22 is directly connected to the sector gear piece 6 used to drive the grating movement.

[0030] The gear 7 is connected to a stepping motor 8 .

[0031] It should be noted that, during use of the device, the gear 7 can be driven by manual control or by a stepping motor 8 .

[0032] The working surface 1 is provided with longitudinal and transverse reinforcing ribs 5 .

[0033] It should be noted that the longitudinal and transverse reinforcing ribs 5 are used to enhance the rigidity and strength of the parts, and can also prevent quality problems such as deformation or dents of the parts during the molding process.

[0034] The working surface 1, the plane module 2, the shaft sleeve 3 and the rotating shaft 4 are integrally formed by a plastic mold.

[0035] During the use of the grating seat, after the grating and the working surface 1 are aligned, the grating is bonded to the working surface 1; then the gear 7 is driven to rotate by manual control or the stepper motor 8, the gear 7 drives the sector gear piece 6 to move, and the sector gear piece 6 drives the rotating shaft 4 to rotate along the central axis of the grating seat, thereby realizing the rotation of the grating for switching the instrument wavelength setting.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spectrophotometer grating base assembly, characterized in that: It comprises a working surface (1), wherein the working surface (1) is vertically connected to a planar module (2), a shaft sleeve (3) is formed on a side of the planar module (2) away from the working surface (1), and the shaft sleeve (3) is connected to a rotating shaft (4).

2. A spectrophotometer grating base assembly according to claim 1, characterized in that: A central hole (21) is provided at the center of the planar module (2), and connecting holes (22) are provided around the central hole (21).

3. A spectrophotometer grating base assembly according to claim 2, characterized in that: A threaded insert is provided inside the central hole (21).

4. A spectrophotometer grating base assembly according to claim 1, characterized in that: The lower end of the rotating shaft (4) is connected to a sector gear piece (6), and the sector gear piece (6) is gear-connected to a gear (7).

5. A spectrophotometer grating base assembly according to claim 4, characterized in that: It also includes a stepping motor (8), and the gear (7) is connected to the driving shaft of the stepping motor (8).

6. A spectrophotometer grating base assembly according to claim 1, characterized in that: The working surface (1) is provided with longitudinal and transverse reinforcing ribs (5).

7. The spectrophotometer grating base assembly according to claim 1, characterized in that: The working surface (1), the plane module (2), the shaft sleeve (3) and the rotating shaft (4) are integrally formed by injection molding of a plastic mold.

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