Protection device and instrument module

By introducing a protective device with buffer and locking structures into the modular design, the problem of easy damage to the instrument module in the prior art is solved, and safe installation and use are realized, which facilitates the application of the module in various devices.

CN222192852UActive Publication Date: 2024-12-17SHENZHEN COMEN MEDICAL INSTR
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Patent Information

Application Number
CN202420816805.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-18
Publication Date
2024-12-17
Estimated Expiration
2034-04-18

AI Technical Summary

Technical Problem

The lack of protective devices in existing modular designs leads to easy damage to the instrument module during installation or use.

Method used

A protective device including a housing, a buffer structure and a locking structure is designed. The housing has a first cavity and a second cavity. The buffer structure is buffered by a telescopic member and an elastic member, and the locking structure is fixed by an elastic member and a locking member. , ensure the safe installation and use of instrument modules.

Benefits of technology

It effectively reduces the risk of damage to the instrument module during installation and use, ensures simplicity and safety of operation, and facilitates the installation of the module in various equipment.

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Abstract

The utility model provides a protection device and an instrument module, and the protection device comprises a housing, at least one buffer structure, and at least one locking structure. The shell comprises a first cavity and a second cavity which are arranged at intervals in the first direction. The buffer structure comprises a telescopic piece extending from the second cavity to the first cavity and moving in the axial direction and a first elastic piece used for enabling the telescopic piece to return to the extending position; the first cavity is used for accommodating the body of the instrument module and the length of the first cavity in the extension direction of the telescopic piece is at least greater than that of the body of the instrument module; the side face, perpendicular to the first direction, of the first cavity is provided with an opening, the locking structure is arranged on the side, away from the opening, of the shell, and the locking structure comprises a locking piece penetrating through the first cavity and the second cavity and a second elastic piece used for enabling the locking piece to be clamped to the body of the instrument module. According to the utility model, the assembly operation is simple, the risk of body damage is reduced, the body can be protected during use, and the device can be conveniently installed on various instruments.
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Description

Technical Field

[0001] The utility model belongs to the technical field of instrument protection devices, and in particular relates to a protection device and an instrument module. Background Art

[0002] With the advancement of technology and the increase in demand, modular and detachable designs are becoming more and more common in various types of equipment and instruments. In various fields, it is common to design modules such as power modules and control modules separately, and connect modules with different functions through various detachable connection methods such as plug-in or wire connection, or connect modules with certain functions to specific devices. For example, in the field of medical devices, a monitor can be used as a detachable, independent module, which can be integrated into various medical devices such as defibrillators through plug-in and other methods.

[0003] Although modular design improves the functionality and portability of equipment, most modular designs on the market do not have protective devices for the modules and are simply assembled into the equipment, resulting in damage to the module or the equipment during installation. Utility Model Content

[0004] The technical purpose of the utility model is to provide a protection device and an instrument module, aiming to solve the problem that the instrument module is damaged during assembly or use.

[0005] In order to solve the above technical problems, the utility model is implemented as follows: a protection device includes a housing, at least one buffer structure and at least one locking structure;

[0006] The housing comprises a first cavity and a second cavity spaced apart along a first direction; the buffer structure comprises a telescopic member extending from the second cavity to the first cavity and moving along the axial direction, and a first elastic member used to return the telescopic member to an extended position; the first cavity is used to accommodate the body of the instrument module, and the length of the first cavity along the extension direction of the telescopic member is at least greater than the length of the body of the instrument module;

[0007] The first cavity has an opening on the side perpendicular to the first direction, and the locking structure is arranged on the side of the shell away from the opening. The locking structure includes a locking member penetrating the first cavity and the second cavity and a second elastic member for clamping the locking member to the body of the instrument module.

[0008] Furthermore, the locking member rotates around the rotating axis and the rotation plane is perpendicular to the opening; the second elastic member is arranged in the second cavity, for providing an elastic force to move one end of the locking member in the second cavity away from the opening direction; the locking member in the second cavity is connected to a pressing member in the direction away from the opening, and the pressing member protrudes from the outer shell.

[0009] Furthermore, the housing further comprises a locking cavity disposed in the second cavity away from one end of the opening;

[0010] The locking member passes through the first cavity and the locking cavity, the rotating shaft is provided on the side of the locking cavity close to the first cavity, the pressing member is accommodated in the locking cavity on the side of the locking member away from the opening direction, and the second elastic member is provided in the locking cavity on the side away from the pressing member.

[0011] Furthermore, one end of the pressing member abuts against a side of the locking member away from the opening direction, and the pressing member is movably connected to the shell and the other end protrudes from the shell.

[0012] Furthermore, the locking structure also includes a plurality of third elastic members, each of which is accommodated in the locking cavity, and each of which has one end abutting against the pressing member and the other end abutting against a cavity wall of the locking cavity close to the opening direction.

[0013] Furthermore, a connecting passage is provided between the first cavity and the second cavity, and the connecting passage is used for passing an electrical connector of the instrument module. The protective device also includes an electrical connection component fixed on the outer shell and accommodated in the second cavity, and the electrical connection component is used for electrically connecting to an electrical connector on the body of the instrument module.

[0014] Furthermore, a connector channel connecting the outside and the second cavity is provided on the shell, and the electrical connection component includes a circuit board accommodated in the second cavity and a connector electrically connected to the circuit board, and the connector is inserted into the connector channel.

[0015] Furthermore, the housing further comprises a fixing cavity disposed in the second cavity and close to one end of the opening;

[0016] The telescopic member extends from the fixed cavity to the first cavity, the first elastic member is accommodated in the fixed cavity, one end of the first elastic member is connected to the telescopic member, and the other end is fixed to an end of the fixed cavity away from the first cavity.

[0017] Further, the telescopic member includes an integrally formed abutment portion and a limiting portion, the limiting portion abuts against the cavity wall of the fixed cavity on the side away from the first cavity, the abutment portion is arranged on the side of the limiting portion facing the first cavity and extends into the first cavity, one end of the first elastic member is connected to the side of the limiting portion away from the first cavity, and the other end is fixed to an end of the first cavity away from the first cavity.

[0018] The utility model also provides an instrument module, comprising: a body and the protection device as described above.

[0019] Compared with the prior art, the protective device and instrument module in the utility model have the following beneficial effects: the instrument module includes a protective device and a body, the protective device has a first cavity for accommodating the body and a second cavity for assembling a buffer structure and a locking structure, since the length of the first cavity along the extension direction of the telescopic member is at least greater than the length of the body, when in use, the body is placed in the first cavity, and then a force opposite to the extension direction of the telescopic member is applied to the body, so that the protruding part of the body is plugged into the second cavity, and since the first elastic member can provide the telescopic member with a force to return to the extended position, the first elastic member plays a buffering role during the insertion process of the body. When the body is plugged into place, the second elastic member causes the locking member to be clamped to the body to complete the fixation of the body. The assembly of the body of the instrument module to the protective device in the utility model is simple, which reduces the risk of damage to the body of the instrument module. It can also protect the body of the instrument module during use, and is easy to install on various instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the instrument module in the embodiment of the utility model;

[0021] Figure 2 It is an exploded view of the overall structure of the instrument module in the embodiment of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the instrument module in the embodiment of the utility model;

[0023] Figure 4 This is an exploded view of the overall structure of the protection device in the embodiment of the utility model;

[0024] Figure 5 It is a partial structural schematic diagram of the protection device in the embodiment of the utility model;

[0025] Figure 6 yes Figure 5 Cross-sectional view and partial enlarged view along AA;

[0026] Figure 7 yes Figure 5 Cross-sectional view and partial enlarged view along the middle line BB;

[0027] Figure 8 It is an exploded view of the overall structure of the locking structure in the embodiment of the utility model.

[0028] In the accompanying drawings, each figure mark represents: 10, instrument module; 100, shell; 100a, first cavity; 100b, second cavity; 110, partition; 111, connecting channel; 112, fixing sleeve; 120, side shell; 121, joint channel; 130, cover body; 140, opening; 200, buffer structure; 210, telescopic member; 211, abutment portion; 212, limiting portion; 213, extension portion; 220, first elastic member; 230, fixing seat; 300, locking structure; 310, locking member; 311, clamping portion; 312, rotating shaft; 320, second elastic member; 330, pressing member; 340, locking shell; 350, locking cavity; 360, third elastic member; 400, circuit board; 410, joint; 500, body; 510, electrical connector; 520, clamping groove. DETAILED DESCRIPTION

[0029] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] Example:

[0033] See also Figures 1 to 8 , in this embodiment, a protection device includes a housing 100, at least one buffer structure 200 and at least one locking structure 300;

[0034] The housing 100 includes a first cavity 100a and a second cavity 100b spaced apart along a first direction; the buffer structure 200 includes a telescopic member 210 extending from the second cavity 100b to the first cavity 100a and moving along the axial direction, and a first elastic member 220 for returning the telescopic member 210 to the extended position; the first cavity 100a is used to accommodate the body 500 of the instrument module 10, and the length of the first cavity 100a along the extending direction of the telescopic member 210 is at least greater than the length of the body 500 of the instrument module 10;

[0035] The first cavity 100a has an opening 140 on the side perpendicular to the first direction, and the locking structure 300 is arranged on the side of the shell 100 away from the opening 140. The locking structure 300 includes a locking member 310 penetrating the first cavity 100a and the second cavity 100b and a second elastic member 320 for clamping the locking member 310 to the body 500 of the instrument module 10.

[0036] In this embodiment, specifically, Figure 4 As shown, the housing 100 is in the shape of a cuboid, and the housing 100 includes a side shell 120, an integrally formed shell and a partition 110, and the shell is divided by the partition 110 to form two chambers, wherein one chamber is a first chamber 100a, and the other chamber is enclosed by the side shell 120, the shell and the partition 110 to form a second chamber 100b. The first chamber 100a has an opening 140 perpendicular to at least one side in the first direction, and the opening 140 is used to place the body 500 of the instrument module 10. Preferably, when the first chamber 100a on the shell is provided with a plurality of openings 140, the weight of the protective device can be reduced, the material for manufacturing the protective device can be reduced, and the cost can be saved. It can be understood that the shape of the opening 140 is not limited, as long as it matches the body 500 of the instrument module 10.

[0037] The housing 100 further includes a cover 130 rotatably connected to the shell, and the cover 130 covers the opening 140 of the first cavity 100a.

[0038] It should be understood that the buffer structure 200 can not only prevent the body 500 of the instrument module 10 from being damaged by friction between the side wall of the body 500 and the partition 110 when the body 500 is placed in the first cavity 100a, but also provide a buffer force for plugging and unplugging the side wall of the body 500 of the instrument module 10 and / or the parts protruding from the side wall of the body 500, so as to prevent fragile parts such as plug pins from being damaged during instant plugging and unplugging. Figure 2As shown, in some embodiments, the body 500 of the instrument module 10 has a protruding component at one end facing the second cavity 100b, and the component needs to be plugged into the protective device. The buffer structure 200 can provide a buffer for the process of plugging the component into the protective device.

[0039] like Figure 2~3 As shown, when in use, the body 500 of the instrument module 10 is placed in the first cavity 100a. Since the length of the first cavity 100a along the extension direction of the telescopic member 210 is at least greater than the length of the body 500 of the instrument module 10, the body 500 will not directly contact the partition 110. A force opposite to the extension direction of the telescopic member 210 is applied to the body 500, and the body 500 is slowly inserted into the partition 110. When the body 500 is inserted into place, the second elastic member 320 causes the locking member 310 to be clamped to the body 500 of the instrument module 10, thereby completing the fixing of the body 500 of the instrument module 10.

[0040] The operation of assembling the body 500 of the instrument module 10 to the protective device in the utility model is simple, which reduces the risk of damage to the body 500 of the instrument module 10. It can also protect the body 500 of the instrument module 10 during use, and is easy to install on various instruments.

[0041] Furthermore, if Figure 6 As shown, the locking member 310 rotates around the rotating shaft 312 and the rotation plane is perpendicular to the opening 140; the second elastic member 320 is arranged in the second cavity 100b, and is used to provide an elastic force to make one end of the locking member 310 in the second cavity 100b move away from the opening 140; the locking member 310 in the second cavity 100b is connected to a pressing member 330 in the direction away from the opening 140, and the pressing member 330 protrudes from the housing 100.

[0042] Specifically, Figure 3 As shown, the locking member 310 has a locking portion 311 protruding from one end of the locking member 310 in the first cavity 100a toward the opening 140. Figure 2 As shown, a snap-in groove 520 is provided at the bottom of the body 500 of the instrument module 10 . When the body 500 is plugged into place, the snap-in portion 311 of the locking member 310 is snap-fitted into the snap-in groove 520 of the body 500 .

[0043] Preferably, if Figure 6 As shown, on the rotation plane, an inclined surface is provided on the side of the clamping portion 311 away from the second cavity 100b. This is because the main body 500 of the instrument module 10 is plugged in from the first cavity 100a to the second cavity 100b, and the inclined surface makes the plugging process smoother, while the side opposite to the inclined surface has no inclined setting, which can better fix the main body 500 of the instrument module 10.

[0044] As an example, when the locking member 310 is engaged with the main body 500 of the instrument module 10, pressure is applied to the pressing member 330 toward the opening 140, and the locking member 310 rotates around the rotating shaft 312. One end of the locking member 310 in the second cavity 100b rotates toward the opening 140, and one end of the locking member 310 in the first cavity 100a rotates away from the opening 140, so that the engaging portion 311 of the locking member 310 is away from the engaging groove 520. The protective device releases the fixation of the main body 500 of the instrument module 10, and the first elastic member 220 provides elastic force for the telescopic member 210 to return to the extended position, so that the user can pull out the main body 500 with more effort.

[0045] Furthermore, the housing 100 further includes a locking cavity 350 disposed in the second cavity 100b at one end away from the opening 140;

[0046] The locking member 310 passes through the first cavity 100a and the locking cavity 350. A rotating shaft 312 is provided on the side of the locking cavity 350 close to the first cavity 100a. The pressing member 330 is accommodated in the locking cavity 350 on the side of the locking member 310 facing away from the outlet 140. The second elastic member 320 is provided in the locking cavity 350 on the side facing away from the pressing member 330.

[0047] Specifically, Figure 8 As shown, the locking structure 300 further includes a locking shell 340, which is threadedly connected to the side of the partition 110 of the housing 100 facing the second cavity 100b, and the locking shell 340, the partition 110 and the housing enclose a locking cavity 350, and the second elastic member 320 is a spring. As an example, the pressing member 330 can be abutted or hinged to the side of the locking member 310 facing away from the opening 140.

[0048] Furthermore, if Figure 6 As shown, one end of the pressing member 330 abuts against a side of the locking member 310 facing away from the opening 140 , and the pressing member 330 is movably connected to the housing 100 and the other end protrudes from the housing 100 .

[0049] Furthermore, if Figure 8 As shown, the locking structure 300 further includes a plurality of third elastic members 360 , each of which is received in the locking cavity 350 , and each of which abuts against the pressing member 330 at one end and against the cavity wall of the locking cavity 350 close to the opening 140 at the other end.

[0050] The third elastic member 360 makes the elastic force on the pressing member 330 more uniform, maintains the stability of the pressing member 330, and also provides an elastic force to move one end of the locking member 310 in the second cavity 100b away from the opening 140. Figure 8As shown, a convex column is arranged on the pressing member 330 at a distance from the second elastic member 320 , and the third elastic member 360 is a spring and is sleeved on the convex column, ensuring that the third elastic member 360 can be elastically deformed in a direction perpendicular to the rotating shaft 312 .

[0051] Furthermore, if Figure 2 and 3 As shown, there is a connecting channel 111 between the first cavity 100a and the second cavity 100b, and the connecting channel 111 is used to allow the electrical connector 510 of the instrument module 10 to pass through. The protection device also includes an electrical connection component fixed on the outer shell 100 and accommodated in the second cavity 100b. The electrical connection component is used to electrically connect to the electrical connector 510 on the body 500 of the instrument module 10.

[0052] In the protection device of this embodiment, the electrical connector 510 on the body 500 can be led out to the protection device.

[0053] Furthermore, if Figure 3 and 4 As shown, a connector channel 121 connecting the outside and the second cavity 100b is opened on the shell 100, and the electrical connection component includes a circuit board 400 accommodated in the second cavity 100b and a connector 410 electrically connected to the circuit board 400. The connector 410 passes through the connector channel 121 and protrudes from the shell 100.

[0054] Specifically, Figure 2~3 As shown, a connecting channel 111 is provided on the partition 110 of the outer shell 100, a connector channel 121 is provided on the side shell 120 of the outer shell 100, a circuit board 400 is fixed on the side of the partition 110 facing the second cavity 100b, a conductive area corresponding to the connecting channel 111 is provided on the side of the circuit board 400 facing the first cavity 100a, and a connector 410 is provided on the side of the circuit board 400 facing away from the first cavity 100a.

[0055] When the locking piece 310 is engaged with the main body 500 of the instrument module 10, the electrical connector 510 on the main body 500 contacts and is electrically connected to the conductive area of ​​the circuit board 400, and the protection device leads the circuit inside the main body 500 of the instrument module 10 to the connector 410 of the protection device. When in use, the connector 410 of the protection device can be electrically connected to other modules of the instrument, thereby facilitating the assembly of the instrument module 10 to the instrument.

[0056] Furthermore, if Figures 3-5 As shown in FIG. 7 , the housing 100 further includes a fixing cavity disposed in the second cavity 100 b near one end of the opening 140 ;

[0057] The telescopic member 210 extends from the fixed cavity to the first cavity 100a. The first elastic member 220 is received in the fixed cavity. One end of the first elastic member 220 is connected to the telescopic member 210 and the other end is fixed to an end of the fixed cavity away from the first cavity 100a.

[0058] Specifically, the partition 110 of the outer shell 100 is integrally formed with a fixing sleeve 112 protruding toward the direction of the second cavity 100b, and the buffer structure 200 includes a fixing seat 230, both ends of which are threadedly connected to the partition 110 of the outer shell 100, and the fixing seat 230 partially abuts against the fixing sleeve 112 and encloses the fixing sleeve 112 to form a fixed cavity.

[0059] A through hole is formed in the projection of the partition 110 along the length extension direction of the fixing sleeve 112, and the telescopic member 210 extends through the through hole to the first cavity 100a. The length of the fixing sleeve 112 is less than the initial length of the first elastic member 220 before deformation.

[0060] Furthermore, if Figures 3-5 As shown in Figure 7, the telescopic member 210 includes an integrally formed abutment portion 211 and a limiting portion 212, the limiting portion 212 abuts against the cavity wall of the fixed cavity away from the first cavity 100a, the abutment portion 211 is arranged on the side of the limiting portion 212 facing the first cavity 100a and extends into the first cavity 100a, one end of the first elastic member 220 is connected to the side of the limiting portion 212 away from the first cavity 100a, and the other end is fixed to the end of the fixed cavity away from the first cavity 100a.

[0061] Specifically, in this embodiment, a through hole is opened at the projection of the partition 110 along the length extension direction of the fixed sleeve 112, and the limiting portion 212 is arranged at one end of the abutting portion 211 close to the second cavity 100b. The limiting portion 212 is an annular protrusion, and the diameter of the limiting portion 212 is larger than the aperture of the through hole on the partition 110. The abutting portion 211 passes through the through hole and extends to the first cavity 100a.

[0062] Furthermore, the limiting portion 212 is coaxially provided with an extension portion 213 on a side away from the abutting portion 211, and the first elastic member 220 is sleeved on the extension portion 213. Specifically, the length of the extension portion 213 is greater than or equal to the length of the fixing sleeve 112, and the fixing sleeve 112 is provided with a through hole for the extension portion 213 to pass through on the projection of the length extension direction of the extension portion 213. The first elastic member 220 is a spring, and one end of the first elastic member 220 abuts against the fixing sleeve 112, and the other end abuts against the limiting portion 212.

[0063] See also Figures 1 to 8In this embodiment, an instrument module 10 is provided, including a body 500 and the protection device as described above. As an example, the body 500 is in a rectangular parallelepiped shape, and the side of the body 500 facing the second cavity 100b has an electrical connector 510, and the bottom of the body 500 is provided with a snap-in groove 520.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protection device, characterized in that: comprising a housing, at least one buffer structure and at least one locking structure; The housing comprises a first cavity and a second cavity spaced apart along a first direction; the buffer structure comprises a telescopic member extending from the second cavity to the first cavity and moving along the axial direction, and a first elastic member used to return the telescopic member to an extended position; the first cavity is used to accommodate the body of the instrument module, and the length of the first cavity along the extension direction of the telescopic member is at least greater than the length of the body of the instrument module; The first cavity has an opening on the side perpendicular to the first direction, and the locking structure is arranged on the side of the shell away from the opening. The locking structure includes a locking member penetrating the first cavity and the second cavity and a second elastic member for clamping the locking member to the body of the instrument module.

2. The protection device according to claim 1, characterized in that: The locking member rotates around the rotating axis and the rotation plane is perpendicular to the opening; the second elastic member is arranged in the second cavity, and is used to provide an elastic force to make one end of the locking member in the second cavity move away from the opening; the locking member in the second cavity is connected to a pressing member in the direction away from the opening, and the pressing member protrudes from the outer shell.

3. The protection device according to claim 2, characterized in that: The housing further comprises a locking cavity disposed in the second cavity away from one end of the opening; The locking member passes through the first cavity and the locking cavity, the rotating shaft is provided on the side of the locking cavity close to the first cavity, the pressing member is accommodated in the locking cavity on the side of the locking member away from the opening direction, and the second elastic member is provided in the locking cavity on the side away from the pressing member.

4. The protection device according to claim 3, characterized in that: One end of the pressing member abuts against a side of the locking member away from the opening direction, and the pressing member is movably connected to the shell and the other end protrudes from the shell.

5. The protection device according to claim 3, characterized in that: The locking structure further includes a plurality of third elastic members, each of which is accommodated in the locking cavity, and each of which has one end abutting against the pressing member and the other end abutting against a cavity wall of the locking cavity close to the opening direction.

6. The protection device according to claim 1, characterized in that: There is a connecting passage between the first cavity and the second cavity, and the connecting passage is used to allow the electrical connector of the instrument module to pass through. The protection device also includes an electrical connection component fixed on the outer shell and accommodated in the second cavity, and the electrical connection component is used to electrically connect to the electrical connector on the body of the instrument module.

7. The protection device according to claim 6, characterized in that: The housing is provided with a connector passage connecting the outside with the second cavity. The electrical connection assembly includes a circuit board received in the second cavity and a connector electrically connected to the circuit board. The connector is passed through the connector passage.

8. The protection device according to claim 1, characterized in that: The housing further comprises a fixing cavity disposed in the second cavity and close to one end of the opening; The telescopic member extends from the fixed cavity to the first cavity, the first elastic member is accommodated in the fixed cavity, one end of the first elastic member is connected to the telescopic member, and the other end is fixed to an end of the fixed cavity away from the first cavity.

9. The protection device according to claim 8, characterized in that: The telescopic member includes an integrally formed abutting portion and a limiting portion, the limiting portion abuts against the cavity wall of the fixed cavity on the side away from the first cavity, the abutting portion is arranged on the side of the limiting portion facing the first cavity and extends into the first cavity, one end of the first elastic member is connected to the side of the limiting portion away from the first cavity, and the other end is fixed to an end in the first cavity away from the first cavity.

10. An instrument module, characterized in that: include: A body and a protection device as claimed in any one of claims 1 to 9.