Connecting structure and instrument calibration device

Abstract

The utility model relates to the technical field of instrument calibration, in particular to a connecting structure and an instrument calibration device, which comprise a mounting assembly, the mounting assembly comprises a connecting base, a limiting bracket and a positioning fixture block, the connecting base is provided with the limiting bracket, and the positioning fixture block is arranged in the limiting bracket. The shielding device can emit electromagnetic waves with the frequency the same as or similar to that of a target radio-frequency signal, and when the emitted waves meet external interference signals, the interference phenomenon can be generated, so that the emitted waves and the external interference signals counteract each other and are not influenced by the environment; interference of excitation surge current generated by a unit and electromagnetic waves generated by an interphone and a mobile phone on internal circuits of the device can be effectively prevented in a plant, the signal transmission efficiency is improved, the device works normally during instrument calibration, the stability and accuracy of meter calibration are improved, the working efficiency is improved, and the service life of the device is prolonged. External electromagnetic interference is effectively prevented, data leakage is avoided, and the data security of the test is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument calibration, in particular to a connection structure and an instrument calibration device. Background Art

[0002] In the factory, especially next to the generator set, the calibration pass rate of the meter is lower than that in the standard laboratory. After analysis, the transmitter has poor resistance to external environmental interference. When the meter is calibrated in the factory, the excitation surge current and the close-range high-power radio frequency signal communication (such as walkie-talkies) will cause great interference to the transmitter output, which can easily lead to a decrease in the meter's pass rate. When the meter is calibrated in the laboratory, the environmental interference is smaller and the pass rate is higher than that in the factory. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the problem that different shielding devices are repeatedly installed and the operation is complicated in the above-mentioned or prior art, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a connection structure.

[0006] In order to solve the technical problems of repeated installation of different shielding devices and complicated operation in the above-mentioned prior art, the utility model provides the following technical solutions: a connection structure, comprising:

[0007] The installation component includes a connecting base, a limiting bracket and a positioning block. The connecting base is provided with a limiting bracket, and the positioning block is provided in the limiting bracket.

[0008] As a preferred solution of the connection structure of the utility model, wherein: the connection base includes a mounting through hole and a limiting boss, the mounting through hole is reserved on the connection base, and the limiting boss is arranged inside the connection base.

[0009] As a preferred solution of the connection structure of the utility model, wherein: a limiting bracket is provided on the connection base, a limiting card slot is provided in the limiting bracket, a positioning card slot is provided in the limiting card slot, and a conductive contact is provided in the positioning card slot.

[0010] As a preferred solution of the connection structure of the utility model, wherein: a connection blind hole is reserved on the connection base, and an unlocking connecting plate is provided on the connection base.

[0011] As a preferred solution of the connection structure of the utility model, wherein: the unlocking connecting plate includes a connecting spring and a locking block, the unlocking connecting plate is provided with a connecting spring, a locking block is provided at one end of the unlocking connecting plate, a linkage inclined surface is provided on the locking block, and a limiting groove is provided on the locking block.

[0012] As a preferred solution of the connection structure of the utility model, the positioning block includes a connecting protrusion, a limiting protrusion, an electric contact plate and an installation connecting rod, the positioning block is provided with a connecting protrusion, the connecting protrusion is provided with a limiting protrusion, the connecting protrusion is provided with an electric contact plate, and an installation connecting rod is provided on the outside of the positioning block.

[0013] As a preferred solution of the connection structure of the utility model, wherein: a locking link is arranged in the connecting blind hole, the locking link includes a locking groove, a telescopic spring, a linkage boss and a guide inclined surface, a locking groove is opened on the locking link, a telescopic spring is arranged at one end of the locking link, a linkage boss is arranged at the other end of the locking link, and a guide inclined surface is arranged on the outer side of the locking link.

[0014] The beneficial effects of the connection structure of the utility model are as follows:

[0015] By connecting the positioning card block and the limiting bracket, the shield cover can be better installed and connected. When disassembly work is required, the shield can be replaced more quickly through the outer unlocking connecting plate to adapt to the use needs of different instruments and help reduce the impact of interference.

[0016] In view of the fact that in actual use, there is still the problem of poor anti-interference ability, which affects the pass rate.

[0017] In order to solve the above-mentioned technical problem of poor anti-interference ability and affecting the qualified rate, the utility model also provides the following technical solutions: an instrument calibration device, a calibration device, a mounting assembly is arranged on the calibration device, the calibration device comprises a power socket, an interface panel and a shielding cover, the calibration device is provided with a power socket, the calibration device is provided with an interface panel, and the calibration device is provided with a shielding cover.

[0018] As a preferred solution of the instrument calibration device of the utility model, wherein: the calibration device is provided with a power switch, one end of the power switch is provided with an interface panel, and the calibration device is provided with a heat dissipation grille.

[0019] As a preferred solution of the instrument calibration device of the utility model, the shielding cover includes a protective card slot and a pin connection seat, a protective card slot is opened in the shielding cover, a pin connection seat is arranged on the shielding cover, and an identification mark is arranged on the outside of the shielding cover.

[0020] Beneficial effects of the instrument calibration device of the utility model:

[0021] The jammer can emit electromagnetic waves with the same or similar frequency as the target radio frequency signal. When these emitted waves meet external interference signals, interference will occur, thereby canceling each other out and being unaffected by the environment. In the factory, it can effectively prevent the excitation surge current generated by the unit, the electromagnetic waves generated by walkie-talkies and mobile phones from interfering with the internal circuits of the device, improve the efficiency of signal transmission, work normally during instrument calibration, improve the stability and accuracy of meter calibration, and ensure the pass rate of meters. For unqualified meters, multiple tests and verifications are required. After the pass rate is improved, the calibration time is reduced, the work efficiency is improved, and the external electromagnetic interference is effectively prevented to protect data from leakage, thus ensuring the data security of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 This is a schematic diagram of the installation structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of the connection base;

[0025] Figure 3 It is a schematic diagram of the overall structure of the shielding cover;

[0026] Figure 4 It is a schematic diagram of the structure of the locking connecting rod and the locking block in a normal state;

[0027] Figure 5 It is a schematic diagram of the structure of the motion state of the locking connecting rod and the locking block;

[0028] Figure 6 It is a schematic diagram of the locking state structure of the locking connecting rod and the locking block. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0032] Example 1

[0033] Reference Figure 2 and Figure 3 , which is the first embodiment of the utility model, and the embodiment provides a connection structure, which produces the effect, and includes a mounting assembly 100, the mounting assembly 100 includes a connection base 101, a limiting bracket 102 and a positioning block 105, the connection base 101 is provided with a limiting bracket 102, and the limiting bracket 102 is provided with a positioning block 105;

[0034] Preferably, the connecting base 101 includes a mounting through hole 101a and a limiting boss 101b. The mounting through hole 101a is reserved on the connecting base 101, and the limiting boss 101b is arranged in the connecting base 101. The connecting base 101 is installed and connected through the mounting through hole 101a, and the limiting boss 101b assists in limiting the connection of the mounting connecting rod 105d.

[0035] Furthermore, a limiting bracket 102 is provided on the connection base 101, a limiting card slot 102a is provided in the limiting bracket 102, a positioning card slot 102b is provided in the limiting card slot 102a, a conductive contact 102c is provided in the positioning card slot 102b, a connection blind hole 103 is reserved on the connection base 101, and an unlocking connecting plate 104 is provided on the connection base 101. A passage is formed with the shielding device through the conductive contact 102c provided in the positioning card slot 102b, so that the shielding device can work. After the installation is completed, the shielding device can be started to better perform anti-interference work.

[0036] When in use, it is first installed and positioned through the installation through hole 101a on the connection base 101, and then installed and positioned through the connection protrusion 105a and the limit groove 102a on the positioning block 105. After the connection is completed, the conductive contact piece 102c arranged inside will contact with the power contact plate 105c, so that a path is formed between the shield and the instrument, and the shield enters the working state to perform anti-interference work. When connecting, the installation connecting rod 105d on the outside of the positioning block 105 will enter the connection blind hole 103, and after contacting with the limit boss 101b, the positioning connection is completed.

[0037] Example 2

[0038] Reference Figures 4 to 6 , which is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides a connection structure to solve the problem of repeated installation of different shielding devices and complicated operation. It includes an unlocking connecting plate 104 including a connecting spring 104a and a locking block 104b. The unlocking connecting plate 104 is provided with a connecting spring 104a, and one end of the unlocking connecting plate 104 is provided with a locking block 104b. The locking block 104b is provided with a linkage inclined surface 104b-1, and the locking block 104b is provided with a limited position groove 104b-2;

[0039] Preferably, the positioning block 105 includes a connecting protrusion 105a, a limiting protrusion 105b, an electric contact plate 105c and an installation connecting rod 105d. The positioning block 105 is provided with a connecting protrusion 105a, a limiting protrusion 105b is provided on the connecting protrusion 105a, an electric contact plate 105c is provided on the connecting protrusion 105a, and an installation connecting rod 105d is provided on the outer side of the positioning block 105. The positioning block 105 matching the limiting bracket 102 structure is installed and connected, so that the installation stability between them is higher, and the connection positioning can be performed more quickly, which reduces the difficulty of the installation operation;

[0040] Furthermore, a locking link 106 is arranged in the connecting blind hole 103, and the locking link 106 includes a locking groove 106a, a telescopic spring 106b, a linkage boss 106c and a guide inclined surface 106d. A locking groove 106a is opened on the locking link 106, a telescopic spring 106b is arranged at one end of the locking link 106, a linkage boss 106c is arranged at the other end of the locking link 106, and a guide inclined surface 106d is arranged on the outer side of the locking link 106. Through the mutual connection between the locking groove 106a and the locking block 104b, the connection stability between them can be increased during the locking work. At the same time, the linkage inclined surface 104b-1 and the guide inclined surface 106d arranged on the locking block 104b will move when they contact each other, resulting in an offset so that the internal locking structure can be fixed.

[0041] When in use, when the installation link 105d and the linkage boss 106c at the upper end of the locking link 106 come into contact with each other, the locking link 106 will be squeezed downward to make it move downward. During its downward movement, the guide slope 106d applies an outward force to the locking block 104b through the linkage slope 104b-1, pushing it outward. Under the continuous downward movement, the locking work is completed through the mutual connection between the locking groove 106a and the locking block 104b. When disassembly work is required, the unlocking link plate 104 is pulled outward to release its connection with the locking groove 106a for reset.

[0042] Example 3

[0043] Reference Figure 1 , which is the third embodiment of the utility model. Different from the previous embodiment, this embodiment provides a solution to the problem of poor anti-interference ability and affecting the qualified rate. It includes a verification device 200, on which a mounting assembly 100 is provided. The verification device 200 includes a power socket 201, an interface panel 203 and a shielding cover 205. The verification device 200 is provided with a power socket 201, an interface panel 203, and a shielding cover 205;

[0044] Preferably, the calibration device 200 is provided with a power switch 202, one end of the power switch 202 is provided with an interface panel 203, and the calibration device 200 is provided with a heat dissipation grille 204, through the setting of the interface panel 203, the instrument can be expanded and connected with the wire;

[0045] Furthermore, the shielding device cover 205 includes a protective card slot 205a and a pin connection seat 205b. The shielding device cover 205 is provided with a protective card slot 205a, the shielding device cover 205 is provided with a pin connection seat 205b, and the outer side of the shielding device cover 205 is provided with an identification mark 206. The shielding device is installed and connected with the shielding device through the detachable shielding device cover 205. After the shielding device is installed inside the shielding device cover 205, the shielding device can be directly installed, thereby reducing the difficulty of work.

[0046] When in use, the shielding device is installed and connected with the shielding device cover 205 through the pin connection seat 205b. After the installation is completed, the identification mark 206 corresponding to the shielding device model is set to identify different types of shielding devices. Then, the upper limit bracket 102 on the connection base 101 and the positioning block 105 are installed to complete the installation and positioning of the shielding device cover 205.

[0047] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible, for example, the size, scale, structure, shape and proportion of various elements, and parameter values ​​such as temperature, pressure, etc., mounting arrangements, use of materials, color, directional changes, etc., without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present utility model, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0048] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0049] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A connection structure, characterized in that: include, A mounting assembly (100) comprising a connecting base (101), a limiting bracket (102) and a positioning block (105); the connecting base (101) is provided with a limiting bracket (102), and the positioning block (105) is provided in the limiting bracket (102).

2. The connection structure according to claim 1, characterized in that: The connecting base (101) comprises a mounting through hole (101a) and a limiting boss (101b); the mounting through hole (101a) is reserved on the connecting base (101), and the limiting boss (101b) is arranged inside the connecting base (101).

3. The connection structure according to claim 2, characterized in that: A limit bracket (102) is provided on the connection base (101), a limit card slot (102a) is provided in the limit bracket (102), a positioning card slot (102b) is provided in the limit card slot (102a), and a conductive contact piece (102c) is provided in the positioning card slot (102b).

4. The connection structure according to claim 3, characterized in that: A connection blind hole (103) is reserved on the connection base (101), and an unlocking connecting plate (104) is provided on the connection base (101).

5. The connection structure according to claim 4, characterized in that: The unlocking connecting plate (104) comprises a connecting spring (104a) and a locking block (104b); the unlocking connecting plate (104) is provided with a connecting spring (104a); one end of the unlocking connecting plate (104) is provided with a locking block (104b); a linkage inclined surface (104b-1) is provided on the locking block (104b); and a limiting groove (104b-2) is provided on the locking block (104b).

6. The connection structure according to claim 1 or 2, characterized in that: The positioning block (105) comprises a connecting protrusion (105a), a limiting protrusion (105b), an electric contact plate (105c) and a mounting connecting rod (105d); the positioning block (105) is provided with a connecting protrusion (105a); the connecting protrusion (105a) is provided with a limiting protrusion (105b); the connecting protrusion (105a) is provided with an electric contact plate (105c); and the mounting connecting rod (105d) is provided on the outer side of the positioning block (105).

7. The connection structure according to claim 4, characterized in that: A locking link (106) is arranged in the connecting blind hole (103), and the locking link (106) comprises a locking groove (106a), a telescopic spring (106b), a linkage boss (106c) and a guide inclined surface (106d). The locking link (106) is provided with a locking groove (106a), a telescopic spring (106b) is arranged at one end of the locking link (106), a linkage boss (106c) is arranged at the other end of the locking link (106), and a guide inclined surface (106d) is arranged on the outer side of the locking link (106).

8. An instrument calibration device, characterized in that: The invention comprises a connection structure as claimed in any one of claims 1 to 7, and a verification device (200), wherein the verification device (200) is provided with a mounting assembly (100), the verification device (200) comprises a power socket (201), an interface panel (203) and a shielding cover (205), the verification device (200) is provided with a power socket (201), the verification device (200) is provided with an interface panel (203), and the verification device (200) is provided with a shielding cover (205).

9. The instrument calibration device according to claim 8, characterized in that: The verification device (200) is provided with a power switch (202), one end of the power switch (202) is provided with an interface panel (203), and the verification device (200) is provided with a heat dissipation grille (204).

10. The instrument calibration device according to claim 8, characterized in that: The shielding cover (205) comprises a protective card slot (205a) and a pin connection seat (205b); the shielding cover (205) is provided with a protective card slot (205a); the shielding cover (205) is provided with a pin connection seat (205b); and an identification mark (206) is provided on the outside of the shielding cover (205).

Images