Simple split type adjustable slit device

Abstract

The utility model provides a simple split type adjustable slit device, which comprises a main body, a pressing plate, a first seeking chopper, a second seeking chopper, slit pieces and an ejector rod, the slit pieces are respectively arranged on the first seeking chopper and the second seeking chopper, the two slit pieces are oppositely arranged, the first seeking chopper and the second seeking chopper are respectively connected to the main body in a sliding manner, the pressing plate is arranged on the main body, and the ejector rod is arranged on the pressing plate. The first seeking cutter and the second seeking cutter are connected to the pressing plate through tension springs respectively, an ejector rod is arranged on the main body and located between the first seeking cutter and the second seeking cutter, and the execution end of the ejector rod abuts against one side of the first seeking cutter and one side of the second seeking cutter respectively. According to the simple split type adjustable slit device, the relative positions of the two slit sheets are positioned through the first searching cutter and the second searching cutter, and then the slit sheets are pulled and ejected through the tension spring and the ejector rod, so that the relative distance of the slit is determined, and the simple split type adjustable slit device is simple and easy to implement, can meet the requirements of a conventional teaching demonstration instrument, and is suitable for popularization and application. And the processing difficulty and cost can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of adjustable slits for spectrometers, and particularly relates to a simple split-type adjustable slit device. Background Technique

[0002] A spectrometer, also known as a spectroscope, is widely known as a grating spectrometer. It is a device that measures the intensity of spectral lines at different wavelength positions with a photodetector such as a photomultiplier tube. It consists of an incident slit, a dispersion system, an imaging system, and one or more exit slits. The electromagnetic radiation of the radiation source is separated by a dispersion element to obtain the required wavelength or wavelength region, and the intensity is measured at a selected wavelength (or scanned over a certain wavelength band), which is divided into a monochromator and a polychromator.

[0003] In the application of spectrometers, for the slit devices of spectrometers in the prior art, some use a stepping motor to drive a split device, and some use an integral block milled into a parallelogram structure, which is complex in processing, requires high processing accuracy, and has a high cost. It is not very suitable for teaching equipment or demonstration equipment that is sensitive to cost. Summary of the Invention

[0004] In view of this, the utility model aims to provide a simple split-type adjustable slit device to solve the problems of high precision requirements and high cost of the slit devices applied in spectrometers in the prior art.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A simple split-type adjustable slit device includes a main body, a pressing plate, a first finder, a second finder, a slit plate, and a top rod. Slit plates are respectively installed on the first finder and the second finder, and the two slit plates are arranged opposite to each other. The first finder and the second finder are respectively slidably connected to the main body, and a pressing plate is arranged on the main body. The first finder and the second finder are respectively connected to the pressing plate through a tension spring. A top rod is arranged on the main body, the top rod is located between the first finder and the second finder, and the execution ends of the top rod respectively abut against one side of the first finder and one side of the second finder.

[0007] Further, a first sliding groove is provided on the main body, and a second sliding groove is provided between the pressing plate and the main body. The two ends of the first finder and the two ends of the second finder are respectively slidably connected to the first sliding groove and the second sliding groove.

[0008] Further, arc-shaped convex platforms are respectively arranged on one side of the first finder and one side of the second finder, and the outer peripheries of the execution ends of the top rod respectively abut against the two arc-shaped convex platforms.

[0009] Further, the execution end of the top rod is of a conical structure.

[0010] Further, the conical vertex angle of the conical structure is 53.13°

[0011] Further, a first mounting hole is provided on the main body, a first sheath is mounted in the first mounting hole, a sliding hole is provided in the middle of the first sheath, the periphery of the ejector rod is slidably connected into the sliding hole, and a blind groove is provided at the upper end of the first sheath. A compression spring is arranged on the periphery of the ejector rod, a pressure block is mounted at the upper end of the ejector rod, two ends of the compression spring respectively abut against the lower end of the pressure block and the bottom of the blind groove, and the periphery of the pressure block is slidably connected to the inner side wall of the blind groove.

[0012] Further, a second sheath is mounted on the main body, a second mounting hole is provided on the second sheath, a micrometer head is mounted in the second mounting hole, and the execution end of the micrometer head abuts against the upper end of the pressure block.

[0013] Compared with the prior art, the simple split-type adjustable slit device of the present invention has the following beneficial effects: the relative positions of the two slit pieces are positioned through the first slit searching and the second slit searching, and then are pulled and pushed open by the tension spring and the ejector rod to determine the relative distance of the slit, which is simple and feasible. This device can meet the requirements of conventional teaching instrument demonstration instruments, and can also reduce the processing difficulty and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0015] Figure 1 is a front view schematic diagram of a simple split-type adjustable slit device according to an embodiment of the present invention;

[0016] Figure 2 is a cross-sectional view schematic diagram of a simple split-type adjustable slit device according to an embodiment of the present invention;

[0017] Figure 3 is a front view schematic diagram of the micrometer head according to an embodiment of the present invention;

[0018] Figure 4 is a matching schematic diagram of the execution end of the ejector rod abutting against two arc-shaped bosses according to an embodiment of the present invention.

[0019] Description of the reference numerals:

[0020] 1 - main body; 2 - first sheath; 3 - second sheath; 4 - first slit searching; 5 - second slit searching; 6 - pressing plate; 7 - ejector rod; 8 - pressure block; 9 - tension spring; 10 - compression spring; 11 - slit piece; 12 - micrometer head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0024] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0025] As Figures 1 - 4 shown, a simple split-type adjustable slit device includes a main body 1, a pressing plate 6, a first finder 4, a second finder 5, a slit piece 11, and a top rod 7. The slit pieces 11 are respectively installed on the first finder 4 and the second finder 5, and the two slit pieces 11 are arranged facing each other. The first finder 4 and the second finder 5 are respectively slidably connected to the main body 1, and a pressing plate 6 is arranged on the main body 1. The first finder 4 and the second finder 5 are respectively connected to the pressing plate 6 through a tension spring 9. A top rod 7 is arranged on the main body 1. The top rod 7 is located between the first finder 4 and the second finder 5, and the execution ends of the top rod 7 respectively abut against one side of the first finder 4 and one side of the second finder 5. In this embodiment, the slit piece 11 is made by modifying a craft knife blade, and its cutting edge position is not processed. The relative positions of the two slit pieces 11 are positioned by the first finder 4 and the second finder 5, and then pulled and opened by the tension spring 9 and the top rod 7 to determine the relative distance of the slit. It is simple and easy to operate. This device can meet the requirements of conventional teaching instruments and demonstration instruments, and can also reduce the processing difficulty and cost.

[0026] A first chute is provided on the main body 1, and a second chute is provided between the pressing plate 6 and the main body 1. Both ends of the first slitting blade 4 and both ends of the second slitting blade 5 are respectively slidably connected to the first chute and the second chute. Arc-shaped convex platforms are respectively arranged on one side of the first slitting blade 4 and one side of the second slitting blade 5. The periphery of the execution end of the ejector rod 7 is respectively abutted against the two arc-shaped convex platforms. The execution end of the ejector rod 7 is of a conical structure. In this embodiment, the angle of the execution end is set to 53.13°, and the tangent value of the half angle of the execution end is 0.5. The ratio of the up-and-down movement stroke to the left-and-right opening distance is 1:1, and the distance between the slits can be determined by the up-and-down stroke.

[0027] A first mounting hole is provided on the main body 1. A first sheath 2 is installed in the first mounting hole. A sliding hole is provided in the middle of the first sheath 2. The periphery of the ejector rod 7 is slidably connected to the sliding hole. A blind groove is provided at the upper end of the first sheath 2. A compression spring 10 is arranged on the periphery of the ejector rod 7. A pressing block 8 is installed at the upper end of the ejector rod 7. Both ends of the compression spring 10 are respectively abutted against the lower end of the pressing block 8 and the bottom of the blind groove, and the periphery of the pressing block 8 is slidably connected to the inner side wall of the blind groove.

[0028] A second sheath 3 is installed on the main body 1. A second mounting hole is provided on the second sheath 3. A micrometer head 12 is installed in the second mounting hole. The execution end of the micrometer head 12 abuts against the upper end of the pressing block 8. The micrometer head 12 is a prior art. The micrometer head 12 is fixed by a set screw. When the micrometer head 12 moves downward by 1 mm, the first slitting blade 4 and the second slitting blade 5 drive the upper slitting pieces 11 thereon and separate to the left and right by a distance of 1 mm. When the movable part at the top of the micrometer head 12 moves upward, the top block and the ejector rod 7 move upward correspondingly under the action of the compression spring 10. Under the action of the tension spring 9, the first slitting blade 4 and the second slitting blade 5 move toward the middle along the first chute and the second chute. The arc-shaped convex platform and the lower conical tip of the ejector rod 7 remain in contact symmetrically left and right. The first slitting blade 4 and the second slitting blade 5 drive the upper slitting pieces 11 thereon to close. When the scale of the micrometer head 12 is aligned with the "zero" scale position, the precise fitting distance between the two slitting pieces 11 is zero.

[0029] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A simple split-type adjustable slit device, characterized in that: It includes a main body (1), a pressing plate (6), a first cutting finder (4), a second cutting finder (5), a sewing piece (11) and a ejector rod (7). The sewing pieces (11) are respectively installed on the first cutting finder (4) and the second cutting finder (5), and the two sewing pieces (11) are arranged oppositely. The first cutting finder (4) and the second cutting finder (5) are respectively slidably connected to the main body (1), and a pressing plate (6) is arranged on the main body (1). The first cutting finder (4) and the second cutting finder (5) are respectively connected to the pressing plate (6) through a tension spring (9). A ejector rod (7) is arranged on the main body (1), the ejector rod (7) is located between the first cutting finder (4) and the second cutting finder (5), and the execution ends of the ejector rod (7) respectively abut against one side of the first cutting finder (4) and one side of the second cutting finder (5).

2. The simple split-type adjustable slit device according to claim 1, characterized in that: A first sliding groove is provided on the main body (1), and a second sliding groove is provided between the pressing plate (6) and the main body (1). The two ends of the first cutting finder (4) and the two ends of the second cutting finder (5) are respectively slidably connected to the first sliding groove and the second sliding groove.

3. The simple split-type adjustable slit device according to claim 1, wherein: Arc-shaped convex platforms are respectively arranged on one side of the first cutting finder (4) and one side of the second cutting finder (5), and the periphery of the execution end of the ejector rod (7) respectively abuts against the two arc-shaped convex platforms.

4. The simple split-type adjustable slit device according to claim 1, characterized in that: The execution end of the ejector rod (7) is of a conical structure.

5. The simple split-type adjustable slit device according to claim 4, wherein: The conical apex angle of the conical structure is 53.13°.

6. The simple split-type adjustable slit device according to claim 1, characterized in that: A first mounting hole is provided on the main body (1), a first sheath (2) is installed in the first mounting hole. A sliding hole is provided in the middle of the first sheath (2). The periphery of the ejector rod (7) is slidably connected to the sliding hole. A blind groove is provided at the upper end of the first sheath (2). A compression spring (10) is arranged on the periphery of the ejector rod (7). A pressing block (8) is installed at the upper end of the ejector rod (7). The two ends of the compression spring (10) respectively abut against the lower end of the pressing block (8) and the bottom of the blind groove, and the periphery of the pressing block (8) is slidably connected to the inner side wall of the blind groove.

7. The simple split-type adjustable slit device according to claim 6, wherein: A second sheath (3) is installed on the main body (1). A second mounting hole is provided on the second sheath (3), and a micrometer head (12) is installed in the second mounting hole. The execution end of the micrometer head (12) abuts against the upper end of the pressing block (8).

Images