CN211828680U - Fastening device - Google Patents
Fastening device Download PDFInfo
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- CN211828680U CN211828680U CN202020862393.8U CN202020862393U CN211828680U CN 211828680 U CN211828680 U CN 211828680U CN 202020862393 U CN202020862393 U CN 202020862393U CN 211828680 U CN211828680 U CN 211828680U
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- hollow cathode
- cathode lamp
- lamp tube
- tube sleeve
- clamping ring
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Abstract
The utility model relates to an auxiliary device of a hollow cathode lamp in an atomic fluorescence instrument, in particular to a clamping device, which comprises a base, wherein a hollow cathode lamp tube seat is supported on the base and comprises a bottom plate and a snap ring fixed on the bottom plate, the inner diameter of the snap ring is matched with the outer diameter of a lamp tube of the hollow cathode lamp, and the inner diameter of the snap ring is smaller than the outer diameter of the lamp holder of the hollow cathode lamp; the lamp holder is characterized by further comprising a hollow cathode lamp tube sleeve, the inner diameter of the hollow cathode lamp tube sleeve is matched with the outer diameter of a lamp holder of the hollow cathode lamp, and a fastening structure for fixing the hollow cathode lamp tube sleeve on the clamping ring is connected between the hollow cathode lamp tube sleeve and the clamping ring. The hollow cathode lamp has better fixing effect and better stability; in addition, the lamp tube of the hollow cathode lamp is positioned in the radial direction and the axial direction, the coaxiality of the lamp tube and the spectrum of the hollow cathode lamp is guaranteed, the positioning accuracy is better, and the detection precision is higher.
Description
Technical Field
The utility model relates to an auxiliary device of hollow cathode lamp in atomic fluorescence appearance especially relates to a card solid device.
Background
The atomic fluorescence instrument mainly comprises a hollow cathode lamp (excitation light source), an atomizer, an optical ring, a detector, a chimney and the like, wherein the hollow cathode lamp tube and the detector are arranged on a shell of the optical ring, the chimney and the atomizer are respectively arranged at an upper opening and a lower opening of the optical ring, and flame ignited at an outlet of the atomizer is positioned in the optical ring.
When the device is used, in order to ensure the detection accuracy, the light beam emitted by the excitation light source of the hollow cathode lamp needs to be directed at the central area of the flame at the outlet of the atomizer. In order to solve the above problems, the applicant filed a patent with publication number CN209213573U, which is a patent that realizes the clamping of the hollow cathode lamp by two spring pieces, but the applicant found that the device has the following defects in the long-term use:
1. although the spring piece has the characteristic of higher adjustability, the stability is poorer, and the spring piece is easy to lose elasticity and lose the fixing effect after long-term use;
2. this fixing device lacks the axial positioning to hollow cathode fluorescent tube, needs artificial control hollow cathode fluorescent tube in the middle part position during installation, otherwise can appear the problem of hollow cathode lamp front end or rear end skew downwards, leads to the location of hollow cathode lamp inaccurate when using, and the light beam that the excitation light source sent can't aim at atomizer export flame central zone, leads to final testing result error great.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can be long-term stable fixed hollow cathode lamp's a card solid device.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a kind of clamping and fixing device is provided,
the lamp holder comprises a base, wherein a hollow cathode lamp tube seat is supported on the base and comprises a bottom plate and a clamping ring fixed on the bottom plate, the inner diameter of the clamping ring is matched with the outer diameter of a lamp tube of the hollow cathode lamp, and the inner diameter of the clamping ring is smaller than the outer diameter of the lamp holder of the hollow cathode lamp;
the lamp holder is characterized by further comprising a hollow cathode lamp tube sleeve, the inner diameter of the hollow cathode lamp tube sleeve is matched with the outer diameter of a lamp holder of the hollow cathode lamp, and a fastening structure for fixing the hollow cathode lamp tube sleeve on the clamping ring is connected between the hollow cathode lamp tube sleeve and the clamping ring.
The working principle of the scheme is as follows: when the hollow cathode lamp is fixed, the lamp tube of the hollow cathode lamp is inserted into the snap ring, the lamp holder is abutted against the snap ring, and the snap ring is abutted against the lamp holder, so that the unidirectional movement of the hollow cathode lamp tube body in the axial direction is limited, and the primary fixing and the axial positioning of the hollow cathode lamp tube are realized.
And then sleeving the hollow cathode lamp tube sleeve on the lamp holder, connecting the hollow cathode lamp tube sleeve with the clamping ring through the fastening structure, and realizing secondary fixing of the hollow cathode lamp tube by utilizing the connection of the hollow cathode lamp tube sleeve and the clamping ring, thereby realizing double fixing of the hollow cathode lamp tube and ensuring the fixing effect of the hollow cathode lamp tube.
Preferably, the bottom plate both sides all are equipped with the curb plate of downward expenditure, form the accommodation space that can hold the base between two curb plates, and two curb plates can carry out the block to the base when the base is located accommodation space.
When fixing the hollow cathode tube seat, put the hollow cathode tube seat on the base to make the base be located between two blocks of curb plates, because be formed with accommodation space between two blocks of curb plates, and two blocks of curb plates can carry out the block to the base when the base is located accommodation space, so realized the fixed of hollow cathode tube seat this moment, the dismantlement of this kind of mode hollow cathode tube seat is simple, the change of being convenient for.
Preferably, the base both sides all are fixed with the locating pin, all offer the constant head tank that can carry out vertical location to the locating pin on two blocks of curb plates. The vertical positioning of the hollow cathode tube seat can be further realized by the positioning groove and the positioning pin, and the fixing stability is improved.
Preferably, the positioning groove is an inverted L-shaped groove formed by combining a vertical groove and a horizontal groove, and the opening of the positioning groove is positioned at the lower side edge of the side plate. The arrangement ensures that the hollow cathode lamp tube seat only needs to move along the track of the L-shaped groove when being installed, and the operation is convenient and fast.
Preferably, the fastening structure is a threaded structure, the lamp holder is sleeved at the tail end of the hollow cathode lamp tube body, one side, away from the tail end of the hollow cathode lamp tube body, of the hollow cathode lamp tube sleeve exceeds the lamp holder, internal threads are arranged on the inner wall, exceeding the lamp holder, of the hollow cathode lamp tube sleeve, and external threads matched with the hollow cathode lamp tube sleeve are arranged on the surface of the portion, corresponding to the hollow cathode lamp tube sleeve, of the clamping ring. The fixing stability of the hollow cathode lamp tube sleeve and the clamping ring is high in a threaded connection mode.
Preferably, the fastening structure is a pin groove structure, the surface of the clamping ring is provided with a clamping column, and the hollow cathode lamp tube sleeve is provided with a clamping groove matched with the clamping column.
The beneficial effect of this scheme:
according to the scheme, the hollow cathode lamp is fixed in a double fixing mode through the clamping ring and the hollow cathode lamp tube sleeve, so that the fixing effect is better, and the stability is better;
and this scheme carries out radial and axial while location to hollow cathode fluorescent tube body, compares in prior art, and this scheme has guaranteed the coaxiality of hollow cathode fluorescent tube body and hollow cathode fluorescent tube cover, and the location accuracy is better, and detection accuracy is higher.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
fig. 4 is a schematic structural view of embodiment 4.
Reference numerals in the drawings of the specification include: the lamp comprises a lamp tube 1, a base 2, a bottom plate 3, a side plate 4, a positioning groove 5, a positioning pin 6, a clamping ring 7, a hollow cathode lamp tube sleeve 8, a lamp holder 9, a clamping groove 10 and a clamping column 11.
Detailed Description
The following is further detailed by way of specific embodiments:
example 1
The embodiment is basically as shown in the attached figures 1 to 3: a clamping and fixing device comprises a base 2, wherein a hollow cathode lamp tube seat is supported on the base 2 and comprises a bottom plate 3 and a clamping ring 7 fixed on the bottom plate, the inner diameter of the clamping ring 7 is matched with the outer diameter of a lamp tube 1 of a hollow cathode lamp, and the inner diameter of the clamping ring 7 is smaller than the outer diameter of a lamp holder 9 of the hollow cathode lamp;
the lamp holder is characterized by further comprising a hollow cathode lamp tube sleeve 8, the inner diameter of the hollow cathode lamp tube sleeve 8 is matched with the outer diameter of a lamp holder 9 of the hollow cathode lamp, and a fastening structure for fixing the hollow cathode lamp tube sleeve 8 on the clamping ring 7 is connected between the hollow cathode lamp tube sleeve 8 and the clamping ring 7.
The base 2 is used for supporting a hollow cathode tube seat, is in a cuboid shape as a whole and is connected with a position adjusting mechanism in the atomic fluorescence instrument.
Referring to fig. 1 and 3, the hollow cathode lamp tube seat comprises a bottom plate 3, a clamping ring 7 is integrally formed on the bottom plate 3, the inner diameter of the clamping ring 7 is slightly larger than the outer diameter of the lamp tube 1 of the hollow cathode lamp, so that the hollow cathode lamp tube can be inserted into the clamping ring 7, and the inner diameter of the clamping ring 7 is smaller than the outer diameter of the lamp holder 9 of the hollow cathode lamp, therefore, when the lamp tube 1 of the hollow cathode lamp is inserted into the clamping ring 7, the left end of the lamp holder 9 of the hollow cathode lamp can be abutted against the right end of the clamping ring 7, and preliminary axial positioning of the hollow cathode lamp is realized. And the outer surface on the right side of the clamping ring 7 is provided with an external thread.
The hollow cathode lamp tube sleeve 8 is sleeved on the lamp holder 9 of the hollow cathode lamp, and specifically, the inner diameter of the hollow cathode lamp tube sleeve 8 is slightly larger than the outer diameter of the lamp holder 9 of the hollow cathode lamp, so that the hollow cathode lamp tube sleeve 8 can be sleeved on the lamp holder 9 of the hollow cathode lamp. Meanwhile, the inner diameter of the hollow cathode lamp tube sleeve 8 is matched with the outer diameter of the threaded surface on the right side of the clamping ring 7, the whole length of the hollow cathode lamp tube sleeve 8 is larger than that of the lamp holder 9, and when the hollow cathode lamp tube sleeve 8 can be sleeved on the lamp holder 9 of the hollow cathode lamp, the left end of the hollow cathode lamp tube sleeve 8 extends to the clamping ring 7. The hollow cathode lamp tube sleeve 8 and the snap ring 7 are fixed through a fastening structure, the fastening structure is a threaded structure in the embodiment, specifically, an inner thread is arranged on the inner wall of the hollow cathode lamp tube sleeve 8, which exceeds the lamp holder 9, and the inner thread of the inner wall of the hollow cathode lamp tube sleeve 8 and the outer thread on the outer surface on the right side of the snap ring 7 can be in threaded fit.
When the lamp is installed, the lamp tube 1 of the hollow cathode lamp is inserted into the clamping ring 7 until the left end of the lamp holder 9 is abutted against the right side of the clamping ring 7. Then, the hollow cathode lamp tube sleeve 8 is sleeved on the lamp holder 9, the hollow cathode lamp tube sleeve 8 is pushed leftwards, after the hollow cathode lamp tube sleeve 8 is contacted with the clamping ring 7, the hollow cathode lamp tube sleeve 8 is rotated, the hollow cathode lamp tube sleeve 8 is in threaded fit with the clamping ring 7 until the inside of the hollow cathode lamp tube sleeve 8 is tightly abutted against the right side face of the lamp holder 9, and at the moment, the hollow cathode lamp and the clamping ring 7 are fixed into a whole, so that the axial positioning and the radial positioning of the hollow cathode lamp tube are realized. In order to facilitate the operation of a user, the surface of the hollow cathode lamp tube sleeve 8 is sleeved with a rubber sleeve, so that the touch feeling is better, and the operation is more convenient.
Referring to fig. 1, the hollow cathode tube seat is detachably mounted on the base 2, specifically, the two sides of the bottom plate 3 are respectively integrally formed with a side plate 4, the distance between the two side plates 4 is slightly smaller than the width of the base 2, an accommodating space capable of accommodating the base 2 is formed between the two side plates 4, the side plates 4 are made of materials capable of elastically deforming such as rubber, and the two side plates 4 can clamp the base 2 when the hollow cathode tube seat is mounted on the base 2. In order to facilitate the installation of the hollow cathode tube seat and the base 2, two edges on the upper part of the base 2 are chamfered by 45 degrees.
In order to further improve the vertical positioning performance of the hollow cathode tube seat, positioning pins 6 are fixed on two side surfaces of the base 2, correspondingly, positioning grooves 5 matched with the positioning pins 6 are formed in the two side plates 4, as shown in fig. 1, the positioning grooves 5 are inverted 'L' -shaped grooves formed by combining a vertical groove and a horizontal groove, and openings of the positioning grooves 5 are located on the lower sides of the side plates 4.
When the positioning device is installed, the bottom plate 3 of the hollow cathode tube seat is placed on the base 2, the opening of the positioning groove 5 is aligned with the positioning pin 6, then the hollow cathode tube seat is pressed downwards to enable the positioning pin 6 to be inserted into the vertical groove part, and then the hollow cathode tube seat is pushed leftwards to enable the positioning pin 6 to enter the horizontal groove, so that the vertical positioning of the hollow cathode tube seat is achieved.
The beneficial effect of this scheme: in the scheme, the hollow cathode lamp tube is fixed in a double fixing mode through the clamping ring 7 and the hollow cathode lamp tube sleeve 8, so that the fixing effect is better, and the stability is better; in addition, the lamp tube 1 of the hollow cathode lamp is positioned in the radial direction and the axial direction, and compared with the prior art, the coaxiality of the lamp tube body 1 of the hollow cathode lamp and the hollow cathode lamp tube sleeve is ensured, the positioning accuracy is better, and the detection precision is higher.
Example 2
As shown in fig. 4, the present embodiment is different from embodiment 1 in that the fastening structure is different, specifically, a snap post 11 is integrally formed on the right surface of the snap ring 7, a snap groove 10 adapted to the snap post 11 is formed on the hollow cathode tube housing 8, the snap groove 10 is an inverted "L" shaped groove, and the entrance of the snap groove 10 is located on the left side edge of the hollow cathode tube housing 8.
When the hollow cathode lamp tube sleeve 8 is used, the hollow cathode lamp tube sleeve 8 is sleeved on the clamping ring 7, the clamping column 11 is located at the inlet of the clamping groove 10, the hollow cathode lamp tube sleeve 8 is pushed leftwards until the clamping column 11 abuts against the clamping groove 10, then the hollow cathode lamp tube sleeve 8 is screwed clockwise, the clamping column 11 is clamped in the clamping groove 10, and therefore matching between the hollow cathode lamp tube sleeve 8 and the clamping ring 7 is completed.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. A kind of clamping device, characterized by:
the lamp tube holder comprises a base (2), wherein a hollow cathode lamp tube holder is supported on the base (2), the hollow cathode lamp tube holder comprises a bottom plate (3) and a clamping ring (7) fixed on the bottom plate, the inner diameter of the clamping ring (7) is matched with the outer diameter of a lamp tube (1) of the hollow cathode lamp, and the inner diameter of the clamping ring is smaller than the outer diameter of a lamp holder (9) of the hollow cathode lamp;
the lamp holder is characterized by further comprising a hollow cathode lamp tube sleeve (8), the inner diameter of the hollow cathode lamp tube sleeve (8) is matched with the outer diameter of a lamp holder (9) of the hollow cathode lamp, and a fastening structure for fixing the hollow cathode lamp tube sleeve (8) on the clamping ring (7) is connected between the hollow cathode lamp tube sleeve (8) and the clamping ring (7).
2. A fastening device according to claim 1, characterized in that: bottom plate (3) both sides all are equipped with curb plate (4) of spending downwards, form the accommodation space that can hold base (2) between two curb plates (4), and base (2) when being located accommodation space two curb plates (4) can carry out the block to base (2).
3. A fastening device according to claim 2, characterized in that: both sides of the base (2) are fixed with positioning pins (6), and positioning grooves (5) which can vertically position the positioning pins (6) are formed in the two side plates (4).
4. A fastening device according to claim 3, characterized in that: the positioning groove (5) is an inverted L-shaped groove formed by combining a vertical groove and a horizontal groove, and the opening of the positioning groove (5) is positioned at the lower side edge of the side plate (4).
5. A fastening device according to any one of claims 1-4, characterized in that: the fastening structure is of a threaded structure, the tail end of the hollow cathode lamp tube body is sleeved with the lamp holder (9), one side, away from the tail end of the hollow cathode lamp tube body, of the hollow cathode lamp tube sleeve (8) exceeds the lamp holder (9), an internal thread is arranged on the inner wall of the part, exceeding the lamp holder (9), of the hollow cathode lamp tube sleeve (8), and an external thread matched with the hollow cathode lamp tube sleeve (8) is arranged on the surface of the corresponding part of the clamping ring (7) and the hollow cathode lamp tube sleeve (8).
6. A fastening device according to any one of claims 1-4, characterized in that: the fastening structure is a pin groove structure, the surface of the clamping ring (7) is provided with a clamping column (11), and the hollow cathode lamp tube sleeve (8) is provided with a clamping groove (10) matched with the clamping column (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020862393.8U CN211828680U (en) | 2020-05-21 | 2020-05-21 | Fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020862393.8U CN211828680U (en) | 2020-05-21 | 2020-05-21 | Fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211828680U true CN211828680U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020862393.8U Active CN211828680U (en) | 2020-05-21 | 2020-05-21 | Fastening device |
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| CN (1) | CN211828680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114220726A (en) * | 2021-11-09 | 2022-03-22 | 北京子牛亦东科技有限公司 | Novel cathode fixing device for ion source of ion implanter |
-
2020
- 2020-05-21 CN CN202020862393.8U patent/CN211828680U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114220726A (en) * | 2021-11-09 | 2022-03-22 | 北京子牛亦东科技有限公司 | Novel cathode fixing device for ion source of ion implanter |
| CN114220726B (en) * | 2021-11-09 | 2024-02-23 | 北京子牛亦东科技有限公司 | Cathode fixing device for ion source of ion implanter |
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