Closed type elastic piston ring for connecting nozzle at front end of motor shell
By installing a closed-mouth elastic swell on the front end of the motor housing, the open-mouth elastic swell is solved, and the normal loading and unloading of the mobile phone is realized, which improves the reliability and stability of use.
Patent Information
- Application Number
- CN202422079650.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The open-shaped elastic swelling ring at the front end of the existing motor case is prone to permanent deformation, resulting in the phone not being able to be installed or pulled out, causing inconvenience to users.
The closed-mouth elastic ring is adopted, including the elastic surge ring body installed on the front end of the motor housing. The elastic surge ring body is composed of the surge ring frame and the drum-shaped hollow elastic frame. The surge ring frame is composed of the first closed-mouth ring and the second closed-mouth ring distributed coaxially. The drum-shaped hollow elastic frame undergoes elastic deformation when it is squeezed in the ring direction for one week.
This design ensures that the elastic swelling will not cause permanent deformation after elastic deformation, ensures that the phone can be installed or pulled out normally, and improves the reliability and stability of use.
Smart Images
Figure CN222953812U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical equipment housing components, and in particular to a closed elastic expansion ring used on a front end connection nozzle of a motor housing. Background Art
[0002] With the development of medical technology, medical drive equipment is increasingly used in the medical field, such as oral medical equipment, ophthalmic medical equipment, and some implantable devices. Handheld medical surgical equipment often uses medical motors for power output, such as handheld brushless motors. When in use, the front end of the motor is installed with different types of mobile phones to be used as medical surgical equipment, such as motor configurations connected to oscillating saw mobile phones, reciprocating saw mobile phones, sagittal saw mobile phones, straight drill mobile phones, curved drill mobile phones, Kirschner wires, etc.
[0003] When a handheld medical surgical device is used in surgery, it is necessary to install an adapted mobile phone at the front end of the motor. When the front end of the motor is connected to the mobile phone, the mobile phone can be clamped by the elastic expansion ring on the connection nozzle of the motor front shell. At present, the commonly used elastic expansion ring used to clamp the mobile phone at the front end of the motor is an open type. The advantage is that the elastic deformation is large and easy to process. The disadvantage is that it is easy to produce permanent deformation, resulting in the mobile phone being unable to be installed or removed, causing inconvenience to the user. Utility Model Content
[0004] The present application provides a closed elastic expansion ring for the front end connection nozzle of the motor housing, which is used to solve the technical problem that the open elastic expansion ring proposed in the above background technology is prone to permanent deformation, resulting in the inability to install or remove the mobile phone, causing inconvenience to the user.
[0005] In order to solve the above technical problems, this application adopts the following technical solutions:
[0006] The present application provides a closed elastic expansion ring for a front end connection nozzle of a motor housing, comprising an elastic expansion ring body installed on the front end connection nozzle of a medical motor housing, the elastic expansion ring body comprising an expansion ring frame and a drum-shaped hollow elastic frame with elastic deformation ability and axial hollowness arranged on the expansion ring frame, the expansion ring frame comprising a first closed circular ring and a second closed circular ring coaxially distributed up and down, the drum-shaped hollow elastic frame coaxially arranged between the first closed circular ring and the second closed circular ring, the upper and lower ends of the drum-shaped hollow elastic frame They are respectively connected to the first closed circular ring and the second closed circular ring, and the circumferential surface of the side of the drum-shaped hollow elastic frame is provided with a hollow elastic working surface, and the elastic working surface is a drum-shaped structure with a middle circumferential part protruding outward relative to the circumferential parts at the upper and lower ends. The elastic working surface is evenly provided with a plurality of hollow windows in a circumferential direction, and spring pieces arched outward are formed between adjacent hollow windows. The spring pieces are arc-shaped thin sheet structures, and each of the spring pieces is provided with a spring piece protrusion for clamping on the outer surface position biased toward the second closed circular ring.
[0007] In an optional embodiment, the first closed circular ring and the second closed circular ring have the same thickness and have a thickness difference with the drum-shaped hollow elastic frame. After being connected to the upper and lower ends of the drum-shaped hollow elastic frame, the bottom end surface of the first closed circular ring and the top end surface of the second closed circular ring form two annular surfaces that are opposite to each other and located on the inner side of the drum-shaped hollow elastic frame. There is a smooth transition between the outer surface of the first closed circular ring and the outer surface of the drum-shaped hollow elastic frame, and between the outer surface of the second closed circular ring and the outer surface of the drum-shaped hollow elastic frame. The circular outer edges at the upper and lower ends of the drum-shaped hollow elastic frame are respectively connected to and flush with the circular outer edges at the lower end of the first closed circular ring and the circular outer edges at the upper end of the second closed circular ring.
[0008] The thickness D of the first closed ring 1 and the thickness D of the second closed ring 2 Both are greater than the thickness d of the drum-shaped hollow elastic frame, and when the elastic sheet undergoes elastic deformation, the diameters of the first closed circular ring and the second closed circular ring do not change.
[0009] In an optional embodiment, the number of the hollow windows is 4-6 and they are evenly distributed in the circumferential direction, the shape of the hollow windows is square, and the number of the spring pieces is consistent with the number of the hollow windows.
[0010] In an optional implementation, the spring piece protrusion is a circular protrusion, and the outer surface of the circular protrusion is a spherical surface.
[0011] In an optional embodiment, the spring piece protrusion is arranged at one-third of the lower end of the spring piece.
[0012] In an optional embodiment, the thickness D of the first closed ring is 1 , the thickness D of the second closed ring 2 And the thickness d of the drum-shaped hollow elastic frame satisfies 1.5d≤D 1 =D 2 ≤2.5d relationship.
[0013] In an optional implementation, the thickness of the drum-shaped hollow elastic frame is 0.15-0.3 mm, and the protrusion height of the spring protrusion is 0.15-0.28 mm.
[0014] In an optional implementation, the elastic expansion ring body is integrally formed, and the material of the elastic expansion ring body is selected from spring steel, beryllium bronze, PEEK (polyetheretherketone) plastic or carbon fiber elastic material.
[0015] In an optional embodiment, the elastic expansion ring body is sleeved in the annular assembly groove opened at the bottom end of the connecting nozzle barrel, and the elastic expansion ring body is clamped to the mobile phone through the spring piece protrusion; when the elastic expansion ring body is sleeved in the annular assembly groove opened at the bottom end of the connecting nozzle barrel, a gap cavity is formed between the first closed circular ring and the second closed circular ring between the drum-shaped hollow elastic frame and the annular assembly groove.
[0016] In an optional embodiment, the outer surfaces of the first closed circular ring and the second closed circular ring are flush with the surface of the barrel of the connecting nozzle above the annular assembly groove;
[0017] When the elastic expansion ring body is assembled into the annular assembly groove, a small gap is reserved between the top of the first closed circular ring and the top surface of the annular assembly groove for the first closed circular ring to move upward when the drum-shaped hollow elastic frame undergoes elastic deformation;
[0018] The distance h of the gap is configured as: during the connection process between the connecting nozzle at the front end of the medical motor and the compatible mobile phone, when the drum-shaped hollow elastic frame is squeezed to cause the spring sheet to undergo the maximum elastic deformation during the squeezing process, the minimum distance that the first closed circular ring can move upward without hindrance.
[0019] Compared with the prior art, this application has the following beneficial effects:
[0020] 1. The closed elastic expansion ring for the front end connection nozzle of the motor housing provided in the present application comprises an elastic expansion ring body installed on the front end connection nozzle of the medical motor housing, and the elastic expansion ring body comprises an expansion ring frame and a drum-shaped hollow elastic frame with elastic deformation ability and axial hollowness arranged on the expansion ring frame. The present application adopts a first closed circular ring and a second closed circular ring coaxially distributed up and down as the expansion ring frame. Since the first closed circular ring and the second closed circular ring are both closed circular ring structures, they are stable structures without openings in the circumferential direction. During use, the connection nozzle installed with the closed elastic expansion ring of the present application will not be easily deformed during the process of assembling or unplugging the mobile phone, or after being connected and stuck with the mobile phone. The first closed circular ring and the second closed circular ring will always maintain their relatively standard circular ring structure, thereby ensuring the stability of the circular ring structure at both ends of the elastic expansion ring body during the plugging and unplugging of the connection nozzle, and further ensuring the reliability of the drum-shaped hollow elastic frame between the first closed circular ring and the second closed circular ring during elastic deformation, and ensuring that no permanent deformation will occur after elastic deformation;
[0021] 2. The present application sets the drum-shaped hollow elastic frame coaxially between the first closed circular ring and the second closed circular ring. When the drum-shaped hollow elastic frame is elastically deformed by being squeezed in the circumferential direction, the upper and lower ends of the drum-shaped hollow elastic frame can not only maintain a coaxial relationship with the first closed circular ring and the second closed circular ring under the circumferential constraint of the first closed circular ring and the second closed circular ring, but also make the drum-shaped hollow elastic frame uniformly squeezed in the circumferential direction, so as not to deflect randomly during squeezing, thereby ensuring its stable deformation and long-term reliable use;
[0022] 3. The present application sets a hollow elastic working surface on the circumferential surface of the side of the drum-shaped hollow elastic frame. The elastic working surface is a drum-shaped structure in which the middle circumferential part protrudes outward relative to the circumferential parts at the upper and lower ends. Compared with the working surface of the side of the traditional open-type elastic expansion ring, when elastic deformation occurs under pressure, the elastic expansion ring will not be radially contracted and deformed as a whole when the working surface is under pressure like the traditional open-type elastic expansion ring, which affects the stability of its structure. When the present application is used, only the hollow elastic working surface will be elastically deformed when it is squeezed, and when elastic deformation occurs, the two ends of the elastic working surface are always between the first closed circular ring and the second closed circular ring, the circular opening structure at both ends of the elastic working surface can be stably maintained, and the deformation amount of the elastic working surface is limited, so that permanent deformation will not be easily caused during use, thereby ensuring that the mobile phone can be installed or removed normally; and the elastic working surface of the drum-shaped structure has a relatively stable structure based on its elastic deformation ability, and when it is no longer squeezed, the elastic working surface can quickly return to its original shape;
[0023] 4. The present application has a plurality of hollow windows evenly arranged in a circumferential direction on the elastic working surface, and spring pieces that are arched outward are formed between adjacent hollow windows. The spring pieces adopt the structure of arc-shaped thin sheets. When in use, the elastic working surface of such a structure has better elastic deformation ability on the basis of maintaining its stable drum-shaped overall structure; and the presence of the hollow windows can ensure that the air pressure on the inner and outer sides of the elastic working surface is balanced during the process of plugging and unplugging the mobile phone, so that the elastic working surface can normally exert its elastic deformation ability and ensure its reliability in use; at the same time, the present application sets a spring piece protrusion on each spring piece, and the spring piece protrusion is located on the outer surface of the spring piece biased toward the second closed circular ring. When in use, after the connecting nozzle with the closed elastic expansion ring of the present application is installed and the mobile phone is assembled, the elastic working surface will eventually return to its original shape and will no longer be squeezed during the process of plugging and unplugging the mobile phone. The spring piece protrusion protruding on the outer surface of the spring piece can further clamp the mobile phone, so that the spring piece protrusion is located on the inner side of the limiting step at the rear of the mobile phone to prevent the mobile phone from falling out. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0025] Figure 1 It is a structural schematic diagram of an open elastic expansion ring in the prior art;
[0026] Figure 2 It is a structural schematic diagram of a connection nozzle without an elastic expansion ring;
[0027] Figure 3 A schematic diagram of the structure of a connection nozzle in the prior art equipped with an open elastic expansion ring;
[0028] Figure 4 A schematic diagram of the structure of a closed elastic expansion ring used on the front end connection nozzle of a motor housing provided in one embodiment of the present application;
[0029] Figure 5 A schematic structural diagram of another angle of a closed elastic expansion ring used on the front end connection nozzle of a motor housing provided by an embodiment of the present application;
[0030] Figure 6 This is a schematic structural diagram of a drum-shaped hollow elastic frame provided in one embodiment of the present application.
[0031] Description of reference numerals:
[0032] 10. Connecting nozzle;
[0033] 11. Annular assembly groove;
[0034] 20. Open elastic expansion ring;
[0035] 21. Open your mouth;
[0036] 100. Expanding ring frame;
[0037] 110, first closed ring;
[0038] 120, second closed circle;
[0039] 200, drum-shaped hollow elastic frame;
[0040] 210. Elastic working surface;
[0041] 300, hollow window;
[0042] 400, shrapnel;
[0043] 500, shrapnel bumps;
[0044] 600. Annular surface. DETAILED DESCRIPTION
[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.
[0046] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.
[0047] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.
[0048] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0049] refer to Figures 1 to 6 , Figure 1 It is a structural schematic diagram of an open elastic expansion ring in the prior art; Figure 2 It is a structural schematic diagram of a connection nozzle without an elastic expansion ring; Figure 3 A schematic diagram of the structure of a connection nozzle in the prior art equipped with an open elastic expansion ring; Figure 4 A schematic diagram of the structure of a closed elastic expansion ring used on the front end connection nozzle of a motor housing provided in one embodiment of the present application; Figure 5 A schematic structural diagram of another angle of a closed elastic expansion ring used on the front end connection nozzle of a motor housing provided by an embodiment of the present application; Figure 6 This is a schematic structural diagram of a drum-shaped hollow elastic frame provided in one embodiment of the present application.
[0050] Handheld medical surgical equipment often uses a motor as a power output device. When the motor is in use, the motor is assembled with various mobile phones through the connecting nozzle 10 connected to the front end for use. After the motor is connected to the connecting nozzle 10 at the front end, the output end of the motor is in the connecting nozzle 10. After the connecting nozzle 10 is plugged into the mobile phone, the output end of the motor in the connecting nozzle 10 is further connected to the coupling in the mobile phone, so that when the motor is running, it can drive the mobile phone to run.
[0051] Figure 1 FIG. 2 is a schematic diagram of the structure of an open elastic expansion ring 20 used in the prior art. The open elastic expansion ring 20 can be applied to the connection nozzle 10 installed at the front end of the motor housing. When used, Figure 2 and Figure 3 As shown, the open elastic expansion ring is installed in the annular assembly groove 11 provided at the bottom end of the barrel of the connecting nozzle 10. Figure 1As shown, the open elastic expansion ring 20 has an opening 21 in the circumferential direction. When the open elastic expansion ring 20 is squeezed in the circumferential direction, the open elastic expansion ring 20 undergoes radial deformation, and the opening 21 of the expansion ring will gradually shrink, and the inner diameter of the open elastic expansion ring 20 will also decrease. When it is no longer squeezed, the opening 21 of the expansion ring will become larger, and the inner diameter of the open elastic expansion ring 20 will also increase accordingly. Since the open elastic expansion ring 20 must rely on deformation in the radial direction to normally play its elastic deformation role, the opening is set to ensure its normal use several times. However, this kind of open elastic expansion ring, because of the existence of the opening, makes this kind of elastic expansion ring an unstable structure. During multiple uses, not only the opening is constantly changing, but also the overall inner diameter is constantly changing. This will cause the elastic expansion ring to produce irreversible permanent deformation after multiple elastic deformations, resulting in the mobile phone being unable to be installed or pulled out. In order to ensure that the open elastic expanding ring 20 can normally undergo radial deformation in the annular assembly groove 11 of the connecting nozzle 10, so that it can shrink when radially deforming in the annular assembly groove 11, a larger gap is inevitably left between the open elastic expanding ring 20 and the annular assembly groove 11 to meet the elastic deformation requirements of the open elastic expanding ring 20. The existence of such a large gap will cause the open elastic expanding ring 20 to shake radially in the annular assembly groove 11 of the connecting nozzle 10, and will inevitably cause the connecting nozzle installed with the open elastic expanding ring 20 to inevitably deflect and shift during the plugging and unplugging process with the mobile phone, thereby affecting its centering accuracy during the plugging and unplugging process, causing the end of the open elastic expanding ring 20 to be subjected to extremely asymmetric forces during the plugging and unplugging process, thereby easily causing the open elastic expanding ring 20 to undergo unnecessary deformation and affecting normal use.
[0052] It can be seen that although the open elastic expansion ring 20, which is easy to process, has the characteristic of large elastic deformation, it is easy to produce permanent deformation. Even if the deformed elastic expansion ring can connect the connecting nozzle 10 with the mobile phone, it is easy to cause the mobile phone to be stuck and unable to be separated when the mobile phone is pulled out. Once such a result occurs, the motor or the handle of the mobile phone must be disassembled, which is not only easy to lose the handle, but also the user is often unable to solve this problem by themselves and needs professional institutions to repair it, causing great inconvenience to the user.
[0053] like Figure 4-Figure 6 As shown, an embodiment of the present application provides a closed-end elastic expansion ring for use on the front end connection nozzle of a motor housing, including an elastic expansion ring body installed on the front end connection nozzle 10 of a medical motor housing, the elastic expansion ring body including an expansion ring frame 100 and a drum-shaped hollow elastic frame 200 which is arranged on the expansion ring frame 100 and has elastic deformation capability and is axially hollow.
[0054] The expansion ring frame 100 includes a first closed ring 110 and a second closed ring 120 coaxially distributed up and down, and a drum-shaped hollow elastic frame 200 is coaxially arranged between the first closed ring 110 and the second closed ring 120. The upper and lower ends of the drum-shaped hollow elastic frame 200 are respectively connected to the first closed ring 110 and the second closed ring 120. Figure 4 and Figure 6 As shown, the circumferential surface of the side of the drum-shaped hollow elastic frame 200 is provided with a hollow elastic working surface 210, and the elastic working surface 210 is a drum-shaped structure in which the middle circumferential part protrudes outward relative to the circumferential parts at the upper and lower ends. The elastic working surface 210 is evenly provided with a plurality of hollow windows 300 in a circumferential direction, and an outward-arched spring piece 400 is formed between adjacent hollow windows 300. The spring piece 400 is an arc-shaped thin sheet structure, and each spring piece 400 is provided with a spring piece protrusion 500 for clamping at an outer surface position biased toward the second closed circular ring 120.
[0055] The closed-end elastic expansion ring for the front end connection nozzle of the motor housing provided in the embodiment of the present application includes an elastic expansion ring body installed on the front end connection nozzle 10 of the medical motor housing, and the elastic expansion ring body includes an expansion ring frame 100 and a drum-shaped hollow elastic frame 200 with elastic deformation ability and axial hollowness arranged on the expansion ring frame 100. The present application adopts a first closed circular ring 110 and a second closed circular ring 120 which are coaxially distributed in the upper and lower parts as an expansion ring frame. Since the first closed circular ring 110 and the second closed circular ring 120 are both closed circular ring structures, they are a stable structure without any openings in the circumferential direction. During use, the connecting nozzle 10 installed with the closed elastic expansion ring of the present application will not be easily deformed during the process of assembling or unplugging the mobile phone, or after being connected and stuck with the mobile phone. The first closed circular ring 110 and the second closed circular ring 120 will always maintain their relatively standard circular ring structure, thereby ensuring the stability of the circular ring structure at both ends of the elastic expansion ring body during the plugging and unplugging of the connecting nozzle 10, and further ensuring the reliability of the drum-shaped hollow elastic frame 200 between the first closed circular ring 110 and the second closed circular ring 120 during elastic deformation, and ensuring that no permanent deformation will occur after the elastic deformation.
[0056] In the embodiment of the present application, the drum-shaped hollow elastic frame 200 is coaxially arranged between the first closed circular ring 110 and the second closed circular ring 120. When the drum-shaped hollow elastic frame 200 is elastically deformed by being squeezed in the circumferential direction, the upper and lower ends of the drum-shaped hollow elastic frame 200 can not only maintain a coaxial relationship with the first closed circular ring 110 and the second closed circular ring 120 under the circumferential constraint of the first closed circular ring 110 and the second closed circular ring 120, but also make the drum-shaped hollow elastic frame 200 uniformly squeezed in the circumferential direction, so as not to cause random deflection during squeezing, thereby ensuring its stable deformation and long-term reliable use.
[0057] In the embodiment of the present application, a hollow elastic working surface 210 is arranged on the circumferential surface of the side of the drum-shaped hollow elastic frame 200. The elastic working surface 210 is a drum-shaped structure with the middle circumferential portion protruding outward relative to the circumferential portions at the upper and lower ends. Compared with the working surface of the side of the traditional open-type elastic expansion ring, when it is elastically deformed under pressure, it will not be like the traditional open-type elastic expansion ring, when the working surface is compressed, the elastic expansion ring as a whole will not be radially contracted and deformed to affect the stability of its structure. When the present application is used, only the hollow elastic working surface 210 will be elastically deformed when it is squeezed, and the elastic deformation will not occur. When the elastic working surface 210 is deformed, the two ends of the elastic working surface 210 are always between the first closed circular ring 110 and the second closed circular ring 120, the circular structures at both ends of the elastic working surface 210 are stably maintained, and the deformation of the elastic working surface 210 is limited, so that permanent deformation will not be easily caused during use, thereby ensuring that the mobile phone can be installed or removed normally; and the elastic working surface 210 of the drum-shaped structure has a relatively stable structure based on its elastic deformation ability, and when it is no longer squeezed, the elastic working surface 210 can quickly return to its original shape.
[0058] The closed elastic expansion ring for the front end connection nozzle of the motor housing provided in the embodiment of the present application has a plurality of hollow windows 300 evenly arranged in the circumferential direction on the elastic working surface 210, and spring pieces 400 arching outward are formed between adjacent hollow windows 300. The spring pieces 400 adopt the structure of arc-shaped thin sheets. When in use, the elastic working surface 210 of such a structure has better elastic deformation ability on the basis of maintaining its stable drum-shaped overall structure; and the presence of the hollow window 300 can ensure that the air pressure on the inner and outer sides of the elastic working surface 210 is balanced during the process of plugging and unplugging the mobile phone, so that the elastic working surface 210 can play its role normally. Elastic deformation ability ensures its reliability in use; at the same time, the present application sets a spring piece protrusion 500 on each spring piece 400, and the spring piece protrusion 500 is located on the outer surface of the spring piece 400 biased towards the second closed circular ring 120. When in use, after the mobile phone is assembled with the connecting nozzle 10 equipped with the closed elastic expansion ring of the present application, the elastic working surface 210 will eventually return to its original shape and will no longer be squeezed during the process of plugging and unplugging the mobile phone. The spring piece protrusion 500 protruding from the outer surface of the spring piece 400 can further clamp the mobile phone, so that the spring piece protrusion 500 is on the inner side of the limiting step at the rear of the mobile phone to prevent the mobile phone from falling out.
[0059] In some embodiments, the first closed ring 110 and the second closed ring 120 have the same thickness and have a thickness difference with the drum-shaped hollow elastic frame 200, such as Figure 4 and Figure 5As shown, the bottom end surface of the first closed circular ring 110 and the top end surface of the second closed circular ring 120 are connected to the upper and lower ends of the drum-shaped hollow elastic frame 200 to form two annular surfaces 600 that are opposite to each other and located inside the drum-shaped hollow elastic frame 200. The ring width of the annular surface 600 is the thickness difference between the first closed circular ring 110 and the drum-shaped hollow elastic frame 200, and is also the thickness difference between the second closed circular ring 120 and the drum-shaped hollow elastic frame 200. There is a smooth transition between the outer surface of the first closed circular ring 110 and the outer surface of the drum-shaped hollow elastic frame 200, and between the outer surface of the second closed circular ring 120 and the outer surface of the drum-shaped hollow elastic frame 200. The circular outer edges at the upper and lower ends of the drum-shaped hollow elastic frame 200 are respectively connected and flush with the circular outer edges at the lower end of the first closed circular ring 110 and the circular outer edges at the upper end of the second closed circular ring 120, so that the circumferential surface of the outer side of the elastic expansion ring body is continuous from top to bottom.
[0060] Since the first closed circular ring 110 and the second closed circular ring 120 have a thickness difference with the drum-shaped hollow elastic frame 200, two annular surfaces 600 opposite to each other are generated, and the area formed between the two annular surfaces 600 opposite to each other is located at the periphery of the annular assembly groove 11 of the connecting nozzle 10. Therefore, when the elastic working surface 210 is elastically deformed under pressure, the inner side of the elastic working surface 210 will not contact the annular assembly groove 11, so that the elastic working surface 210 is smoother when elastic deformation occurs. Moreover, although the area formed between the two annular surfaces 600 opposite to each other creates a gap between the elastic working surface 210 and the annular assembly groove 11, the gap will not cause the drum-shaped hollow elastic frame 200 to deflect or shift at will, so that the gap is different from the gap between the traditional open-type expansion ring and the annular assembly groove to ensure that the open-type expansion ring can shrink and deform radially. At the same time, based on the existence of this gap, when the first closed circular ring 110 and the second closed circular ring 120 are sleeved in the annular assembly groove 11, the radial gap between the first closed circular ring 110 and the second closed circular ring 120 and the annular assembly groove 11 can be greatly reduced compared with the gap between the traditional open-type expansion ring and the annular assembly groove, and because the first closed circular ring 110 and the second closed circular ring 120 have a thickness difference with the drum-shaped hollow elastic frame 200, the deformation and use of the drum-shaped hollow elastic frame 200 will not be affected by the reduction of the radial gap between the first closed circular ring 110 and the second closed circular ring 120 and the annular assembly groove 11.
[0061] The thickness D of the first closed ring 110 1 and the thickness D of the second closed ring 120 2 are greater than the thickness d of the drum-shaped hollow elastic frame 200. Therefore, the ring width of the annular surface 600 can be expressed as D 1 -d or D 2-d, when the spring piece 400 undergoes elastic deformation, the diameters of the first closed circular ring 110 and the second closed circular ring 120 do not change.
[0062] In this embodiment, the thickness D of the first closed ring 110 is 1 and the thickness D of the second closed ring 120 2 The thickness d of the first closed circular ring 110 and the second closed circular ring 120 is greater than that of the drum-shaped hollow elastic frame 200. On the one hand, it is to improve the strength of the first closed circular ring 110 and the second closed circular ring 120 so that they will not be easily deformed and their stability is guaranteed. On the other hand, the first closed circular ring 110 and the second closed circular ring 120 with a thickness greater than that of the drum-shaped hollow elastic frame 200 are used, so that when the first closed circular ring 110 and the second closed circular ring 120 are connected to the upper and lower ends of the drum-shaped hollow elastic frame 200, a step surface different from the outer side of the connection position is generated on the inner side of the connection position, that is, the annular surface 600 mentioned above. It can be seen that the closed elastic expansion ring provided in the embodiment of the present application adopts different thickness designs for the expansion ring frame 100 and the drum-shaped hollow elastic frame 200, so as to achieve targeted results and improve the use effect and reliability of the expansion ring.
[0063] In some embodiments, the number of hollow windows 300 is 4-6 and is evenly distributed in the circumferential direction. The shape of the hollow windows 300 is square, and the number of the springs 400 is consistent with the number of the hollow windows 300. An appropriate number of hollow windows 300 and springs 400 not only ensures the overall stability of the drum-shaped hollow elastic frame 200, but also ensures good elastic deformation ability when deformed under pressure. Optionally, in this embodiment, the number of hollow windows 300 is 5, and the number of springs 400 is also 5.
[0064] In some embodiments, the spring protrusion 500 is a circular protrusion, and the outer surface of the circular protrusion is a spherical surface. Such a spring protrusion 500 is arranged on the spring 400, which is easy to process and can well hold the mobile phone, so that the mobile phone is not easily separated from the motor without affecting the insertion and removal of the mobile phone.
[0065] In some embodiments, the spring protrusion 500 is disposed at one-third of the lower end of the spring 400 . In the present embodiment, the shrapnel protrusion 500 is arranged at one-third of the lower end of the shrapnel 400, which is located at the lower position of the shrapnel 400, and can improve the connection effect of the closed-end elastic expansion ring card connected to the mobile phone in the embodiment of the present application. Moreover, the shrapnel protrusion 500 is located at the lower position of the shrapnel 400, which can make the middle circumference of the shrapnel 400 completely released after the extrusion effect is removed. In the process of the rear end of the mobile phone being plugged into the connecting nozzle 10 of the motor, the barrel of the connecting nozzle 10 gradually enters the connecting hole with the limiting step at the rear end of the mobile phone. During the mobile phone plugging process, the shrapnel 400 is gradually compressed to produce elastic deformation. As the mobile phone is further plugged in, the limiting step will further pass over the shrapnel protrusion 500. When the shrapnel protrusion 500 is completely on the inner side of the limiting step, the shrapnel protrusion 500 is no longer squeezed, and the elastic working surface 210 returns to its original shape. The shrapnel protrusion 500 can give full play to its card connection effect, thereby clamping the mobile phone and preventing the mobile phone from easily detaching from the front end of the motor.
[0066] In some embodiments, the thickness D of the first closed ring 110 is 1 , the thickness D of the second closed ring 120 2 And the thickness d of the drum-shaped hollow elastic frame 200 satisfies 1.5d≤D 1 =D 2 ≤2.5d relationship.
[0067] In some embodiments, the thickness of the drum-shaped hollow elastic frame 200 is 0.15-0.3 mm, and the protrusion height of the spring protrusion 500 is 0.15-0.28 mm. Optionally, the thickness of the drum-shaped hollow elastic frame 200 is 0.2 mm, and the protrusion height of the spring protrusion 500 is also 0.2 mm.
[0068] In some embodiments, the elastic expansion ring body is integrally formed, which can improve the precision and quality of the elastic expansion ring, and improve the overall strength and durability of the expansion ring while reducing seam problems.
[0069] Optionally, the elastic expansion ring body is made of spring steel, beryllium bronze, PEEK (polyetheretherketone) plastic or carbon fiber elastic material.
[0070] Elastic materials such as spring steel and beryllium bronze have the advantages of high elastic modulus, good durability, excellent stability and anti-aging ability, corrosion resistance and high strength. PEEK (polyetheretherketone) is a high-performance special plastic with good mechanical strength, chemical corrosion resistance, wear resistance and heat resistance, and can maintain its performance in a wide temperature range, with excellent comprehensive performance. Carbon fiber elastic material is a material composed of carbon fiber and elastomer matrix (such as rubber, polyurethane, etc.). This material combines the high strength and high stiffness of carbon fiber and the flexibility and impact resistance of elastomer. It can be used in applications that require both structural strength and flexibility, and has good corrosion resistance and wear resistance, and can be used for a long time. The embodiment of the present application uses spring steel, beryllium bronze, PEEK plastic or carbon fiber elastic material as the material of the elastic expansion ring body. The drum-shaped hollow elastic frame 200 has a strong deformation ability to restore its original state after being subjected to force, and can still maintain its performance under the conditions of multiple cycles of loading and unloading, and is not easy to fatigue. It should be noted that the material of the elastic expansion ring body of the present application is not limited to the above materials, and other elastic materials suitable for the application can also be used.
[0071] In some embodiments, the elastic expansion ring body is sleeved in the annular assembly groove 11 opened at the bottom end of the barrel of the connecting nozzle 10, and the elastic expansion ring body is clamped to the mobile phone through the spring piece protrusion 500; when the elastic expansion ring body is sleeved in the annular assembly groove 11 opened at the bottom end of the barrel of the connecting nozzle 10, a gap cavity is formed between the first closed circular ring 110 and the second closed circular ring 120 between the drum-shaped hollow elastic frame 200 and the annular assembly groove 11. Since a hollow window 300 is opened on the elastic working surface 210 of the drum-shaped hollow elastic frame 200, the gap cavity is actually a non-enclosed space, and the airflow on both sides of the elastic working surface 210 can freely enter and exit through the hollow window 300, so that the air pressure on both sides of the elastic working surface 210 is balanced, ensuring that the elastic working surface 210 can normally exert its elastic deformation ability, and the existence of the gap cavity prevents the elastic working surface 210 from contacting the annular assembly groove 11 during elastic deformation, thereby preventing the elastic working surface 210 from contacting and wearing the annular assembly groove 11.
[0072] In some embodiments, the outer surfaces of the first closed circular ring 110 and the second closed circular ring 120 are flush with the surface of the barrel of the connecting nozzle 10 above the annular assembly groove 11, ensuring that the first closed circular ring 110 and the second closed circular ring 120 are coaxially sleeved in the annular assembly groove 11, thereby ensuring that the first closed circular ring 110 and the second closed circular ring 120 are not damaged when the connecting nozzle 10 at the front end of the motor is plugged in and out of the mobile phone.
[0073] When the elastic expansion ring body is assembled into the annular assembly groove 11, a small gap is reserved between the top of the first closed circular ring 110 and the groove top surface of the annular assembly groove 11 for the first closed circular ring 110 to move upward when the drum-shaped hollow elastic frame 200 undergoes elastic deformation. When the side circumferential surface of the drum-shaped hollow elastic frame 200 is compressed and elastically deformed, the spring pieces 400 on the elastic working surface 210 will be squeezed and deformed. During the squeezing and deformation of the spring pieces, the upper and lower ends of the elastic working surface 210 will exert force on the connected first closed circular ring 110 and the second closed circular ring 120. Since the bottom end of the second closed circular ring 120 is blocked, the first closed circular ring 110 will inevitably move slightly upward. Since the entire elastic expansion ring body assembled in the annular assembly groove 11 of the connecting nozzle 10 is small in size, and in addition to the presence of the hollow window 300, the first closed circular ring 110 will move slightly upward to meet the elastic deformation of the elastic working surface 210.
[0074] The distance h of the gap is configured as: during the connection process between the connecting nozzle 10 at the front end of the medical motor and the compatible mobile phone, when the drum-shaped hollow elastic frame 200 is squeezed to cause the spring piece 400 to undergo the maximum elastic deformation during the squeezing process, the minimum distance that the first closed circular ring 110 can move upward without hindrance.
[0075] The distance h of the gap is designed in the above manner, so that the first closed circular ring 110 will not be blocked at the upper end while ensuring the normal elastic deformation of the drum-shaped hollow elastic frame 200. Moreover, such a distance h also virtually limits the deformation amount of the hollow elastic frame 200 and limits the further upward movement of the first closed circular ring 110, which plays a good protective role in maintaining the structural stability of the first closed circular ring 110.
[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A closed elastic expansion ring for use on a front end connection nozzle of a motor housing, comprising an elastic expansion ring body mounted on a front end connection nozzle (10) of a medical motor housing, characterized in that: The elastic expansion ring body comprises an expansion ring frame (100) and a drum-shaped hollow elastic frame (200) which is arranged on the expansion ring frame (100) and has elastic deformation capability and is axially hollow. The expansion ring frame (100) comprises a first closed circular ring (110) and a second closed circular ring (120) which are coaxially distributed up and down. The drum-shaped hollow elastic frame (200) is coaxially arranged between the first closed circular ring (110) and the second closed circular ring (120). The upper and lower ends of the drum-shaped hollow elastic frame (200) are respectively connected to the first closed circular ring (110) and the second closed circular ring (120). A hollow elastic working surface (210) is provided on the circumferential surface of the side of the drum-shaped hollow elastic frame (200); the elastic working surface (210) is a drum-shaped structure in which the middle circumferential portion protrudes outward relative to the circumferential portions at the upper and lower ends; a plurality of hollow windows (300) are evenly arranged in the circumferential direction of the elastic working surface (210); spring pieces (400) arching outward are formed between adjacent hollow windows (300); the spring pieces (400) are arc-shaped thin sheet structures; each of the spring pieces (400) is provided with a spring piece protrusion (500) for clamping at an outer surface position biased toward the second closed circular ring (120).
2. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to claim 1, characterized in that: The first closed circular ring (110) and the second closed circular ring (120) have the same thickness and have a thickness difference with the drum-shaped hollow elastic frame (200); the bottom end surface of the first closed circular ring (110) and the top end surface of the second closed circular ring (120) are connected to the upper and lower ends of the drum-shaped hollow elastic frame (200) to form two annular surfaces (600) that are opposite to each other and located inside the drum-shaped hollow elastic frame (200); there is a smooth transition between the outer surface of the first closed circular ring (110) and the outer surface of the drum-shaped hollow elastic frame (200), and between the outer surface of the second closed circular ring (120) and the outer surface of the drum-shaped hollow elastic frame (200); the circular outer edges at the upper and lower ends of the drum-shaped hollow elastic frame (200) are respectively connected to and flush with the circular outer edges at the lower end of the first closed circular ring (110) and the circular outer edges at the upper end of the second closed circular ring (120); The thickness D1 of the first closed circular ring (110) and the thickness D2 of the second closed circular ring (120) are both greater than the thickness d of the drum-shaped hollow elastic frame (200); when the elastic sheet (400) undergoes elastic deformation, the diameters of the first closed circular ring (110) and the second closed circular ring (120) do not change.
3. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to claim 2, characterized in that: The number of the hollow windows (300) is 4-6 and is evenly distributed in the circumferential direction; the shape of the hollow windows (300) is square; and the number of the spring pieces (400) is consistent with the number of the hollow windows (300).
4. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to claim 2 or 3, characterized in that: The spring piece protrusion (500) is a circular protrusion, and the outer surface of the circular protrusion is a spherical surface.
5. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to claim 4, characterized in that: The spring sheet protrusion (500) is arranged at a position one third of the lower end of the spring sheet (400).
6. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to claim 2, 3 or 5, characterized in that: The thickness D1 of the first closed circular ring (110), the thickness D2 of the second closed circular ring (120), and the thickness d of the drum-shaped hollow elastic frame (200) satisfy the relationship 1.5d≤D1=D2≤2.5d.
7. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to claim 6, characterized in that: The thickness of the drum-shaped hollow elastic frame (200) is 0.15-0.3 mm, and the protrusion height of the spring protrusion (500) is 0.15-0.28 mm.
8. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to any one of claims 1 to 3, characterized in that: The elastic expansion ring body is formed in one piece, and the material of the elastic expansion ring body is selected from spring steel, beryllium bronze, PEEK plastic or carbon fiber elastic material.
9. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to any one of claims 1 to 3, characterized in that: The elastic expansion ring body is sleeved in an annular assembly groove (11) provided at the bottom end of the barrel of the connecting nozzle (10), and the elastic expansion ring body is clamped to the mobile phone through the spring piece protrusion (500); when the elastic expansion ring body is sleeved in the annular assembly groove (11) provided at the bottom end of the barrel of the connecting nozzle (10), a gap cavity is formed between the first closed circular ring (110) and the second closed circular ring (120) between the drum-shaped hollow elastic frame (200) and the annular assembly groove (11).
10. The closed elastic expansion ring for the front end connection nozzle of the motor housing according to claim 9, characterized in that: The outer surfaces of the first closed circular ring (110) and the second closed circular ring (120) are flush with the surface of the barrel of the connecting nozzle (10) above the annular assembly groove (11); When the elastic expansion ring body is assembled into the annular assembly groove (11), a small gap is reserved between the top of the first closed circular ring (110) and the top surface of the annular assembly groove (11) to allow the first closed circular ring (110) to move upward when the drum-shaped hollow elastic frame (200) undergoes elastic deformation; The distance h of the gap is configured as: during the connection process between the connection nozzle (10) at the front end of the medical motor and the compatible mobile phone, when the drum-shaped hollow elastic frame (200) is squeezed to cause the spring sheet (400) to undergo the maximum elastic deformation during the squeezing process, the minimum distance that the first closed circular ring (110) can move upward without being hindered.