Cylindrical motor
By designing a cylindrical motor including a structure that prevents the fracture of the shrapnel, the problems of large motor size, high production cost and easy shrapnel breakage in the prior art are solved, and a smaller endoscope size, higher production yield rate and lower production cost are achieved.
Patent Information
- Application Number
- CN202421988141.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The existing cylindrical motors for endoscopes are large in size, which increases the pain of patients. In addition, due to size limitations, small motors mostly adopt the integrated design of lower shrapnel and terminals. The bending process is complex, which can easily cause shrapnel to break, low production yield, high cost, and lack the function to prevent shrapnel from breaking.
A cylindrical motor is designed, including a carrier base, a cylindrical shell, a magnet, an internal threaded annular carrier, a coil, a lower shrapnel and a structure to prevent shrapnel from breaking. The structure to prevent the fracture of the shrapnel is composed of terminal connecting plates, shrapnel connecting heads, metal terminals and lower shrapnel. Through the split structure and design to prevent the fracture of the shrapnel, the processing difficulty is reduced, the yield rate is improved, and production costs are saved.
The functions of preventing the fracture of the shrapnel, preventing the carrier from breaking out and strengthening the anti-slip wire at the connection position are realized, reducing the overall size of the endoscope, reducing the pain for patients, and improving the yield rate of production and reducing the production cost.
Smart Images
Figure CN223039874U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of micro motors, in particular to a cylindrical motor. Background Technique
[0002] An endoscope is a detection instrument integrating traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software, etc., and has an image sensor, an optical lens, a light source illumination, a mechanical device, etc. Its main structure can be understood as a tube equipped with a light and a lens. The endoscope can enter the human body through the natural orifice of the human body or through a small incision made by surgery. The lens focusing of the endoscope requires the use of a cylindrical motor.
[0003] Most of the common cylindrical motors for endoscopes on the current market are similar in structure. They take a cylindrical shell as the main body, and the carrier is driven to move vertically inside through magnets and coils. The carrier is docked with the lens, which can drive the lens to move and achieve focusing. There are some functional deficiencies in the actual use process and there is a certain room for improvement. For example, the diameter of the existing cylindrical endoscope motor and the side length of the square motor are more than 7 mm, and the size is too large, which synchronously increases the size of the endoscope and will increase the pain of patients when used. And now, due to size limitations, in order to save space, small motors mostly adopt an integrated design of a lower elastic piece and a terminal. An additional part is added to the lower elastic piece and bent into a terminal. The bending process is complex, and the elastic piece is easily broken during the process of bending the terminal. The yield rate during production is low and the production cost is high, and it does not have the function of preventing the elastic piece from breaking.
[0004] Now, a new type of cylindrical motor is proposed to solve the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide a cylindrical motor to solve the problem of lacking the function of preventing the elastic piece from breaking proposed in the above background technique.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: A cylindrical motor, including a bearing base, an outer ring at the top of the bearing base is fixedly connected with a cylindrical shell, a magnet is fixedly connected to the inner wall of the cylindrical shell, an internally threaded annular carrier is arranged above the bearing base, a coil is wound around the outside of the internally threaded annular carrier, a lower elastic piece is installed at the bottom of the internally threaded annular carrier, top positioning blocks are fixedly connected to the front, rear, left and right sides at the top of the internally threaded annular carrier respectively, a top anti-disengagement plate is arranged above the top positioning blocks, pin connectors are fixedly connected to the front end at one side of the bottom of the bearing base and the rear end at the other side of the bottom of the bearing base respectively, a titanium alloy inner liner tube is fixedly connected to the inside of the pin connector, and a structure for preventing the elastic piece from breaking is arranged at the bottom of the lower elastic piece.
[0007] The anti-chip fracture structure includes a terminal connecting piece which is arranged below the lower chip. Multiple chip connecting heads are fixedly connected to the top of the terminal connecting piece. Metal terminals are respectively fixedly connected to the front and rear ends of the bearing base.
[0008] Preferably, the top of the chip connecting head is connected to the bottom of the lower chip, and the top end of the terminal connecting piece contacts the bottom end of the lower chip, but they are not connected.
[0009] Preferably, one end of the terminal connecting piece is connected to the top of the metal terminal, and the terminal connecting piece, the chip connecting head, the metal terminal, and the lower chip are electrically connected.
[0010] Preferably, a lens passing slot is provided at the middle position of the bearing base, and the diameter of the cylindrical housing is 6.5 mm.
[0011] Preferably, the outer diameter of the internally threaded annular carrier is consistent with the inner diameter of the coil, and the outer diameter of the internally threaded annular carrier is greater than the inner diameter of the internal thread surface.
[0012] Preferably, the top positioning blocks are arranged at equal intervals and coincide with the vertical center line of the internally threaded annular carrier.
[0013] Preferably, the position dimensions of the top positioning blocks and the top anti-disengagement plate correspond one by one, and the surface area of the bottom end of the top anti-disengagement plate is larger than the surface area of the top end of the top positioning block.
[0014] Preferably, the outer side surface of the top anti-disengagement plate is connected to the inner side surface of the top end of the cylindrical housing, and the top end of the top anti-disengagement plate is flush with the top end of the cylindrical housing.
[0015] Preferably, an upper chip is installed at the top of the internally threaded annular carrier, and the top end of the upper chip is connected to the inner wall of the cylindrical housing.
[0016] Preferably, an internal thread surface is vertically arranged inside the titanium alloy inner liner tube, and the vertical center lines of the pin connecting head and the titanium alloy inner liner tube coincide.
[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: The cylindrical motor not only realizes the function of preventing the chip from breaking, but also realizes the function of preventing the carrier from coming off, and also realizes the function of strengthening the anti-slip thread at the connection position;
[0018] (1) By providing a terminal connecting piece, a spring piece connector, a metal terminal and a lower spring piece, during use, the endoscope lens module is installed inside the internally threaded annular carrier. The threads on the outside of the lens module and the threads inside the internally threaded annular carrier are engaged and locked with each other. When adjusting the focus, power is connected at the metal terminal, and the current sequentially passes through the metal terminal, the terminal connecting piece, the spring piece connector, and the lower spring piece to be transmitted to the coil outside the internally threaded annular carrier. After the coil is energized, a magnetic force is generated. Under the action of the magnetic field generated by the magnet, the internally threaded annular carrier is driven to move upward, and the lens module immediately moves upward synchronously. When the internally threaded annular carrier moves upward, the lower spring piece is pulled upward under the action of the tensile force and deforms, and the upper spring piece deforms synchronously under the action of the thrust force. When the current is disconnected, the lower spring piece and the upper spring piece rebound synchronously to reset the internally threaded annular carrier. The cylindrical shell with a diameter of 6.5 mm makes the overall size of the end of the endoscope smaller, and it can reduce the pain of patients during use. The metal terminal and the lower spring piece are independent of each other, and their connection is realized through the spring piece connector on the terminal connecting piece. The split structure reduces the processing difficulty, can effectively improve the yield rate, saves the production cost, and realizes the function of preventing the spring piece from breaking;
[0019] (2) By providing a top positioning block, a top anti - detachment plate and an upper spring piece, during use, as the internally threaded annular carrier moves upward, the upper spring piece deforms synchronously under the action of the thrust force. During the continuous upward movement of the internally threaded annular carrier, the top positioning block at the top of the internally threaded annular carrier is blocked by the top anti - detachment plate, restricting the amplitude of its upward movement. It can protect the upper spring piece from excessive deformation causing structural damage, and at the same time can prevent the internally threaded annular carrier from coming out, realizing the function of preventing the carrier from coming out;
[0020] (3) By providing a pin connector, a titanium alloy inner lining tube and an internal thread surface, during use, when installing the endoscope lens, the bearing base and the end base of the wire harness are connected by screws. The titanium alloy inner lining tube inside the pin connector is used to drive in the screws. The screw passes through the end base of the wire harness and is screwed into the titanium alloy inner lining tube. The threads on the outside of the screw and the internal thread surface inside the titanium alloy inner lining tube are engaged with each other, and the installation can be completed. The titanium alloy inner lining tube has greater strength and stronger wear resistance than the pin connector made of stainless steel, and it is not easy to occur the phenomenon of slipping of the thread, realizing the function of strengthening the anti - slipping of the connection position. Brief Description of the Drawings
[0021] Figure 1 It is a front - view sectional structure schematic diagram of the present utility model;
[0022] Figure 2 It is a front - view structure schematic diagram of the present utility model;
[0023] Figure 3 It is of the present utility model Figure 1 The enlarged partial sectional structure schematic diagram at A in it;
[0024] Figure 4 is a three-dimensional structural schematic diagram of the present utility model;
[0025] Figure 5 is a top-view structural schematic diagram of the present utility model;
[0026] Figure 6 is a bottom-view structural schematic diagram of the present utility model.
[0027] In the figure: 1, bearing base; 2, terminal connection piece; 3, shrapnel connection head; 4, metal terminal; 5, lower shrapnel; 6, cylindrical shell; 7, magnet; 8, coil; 9, internal-threaded annular carrier; 10, top positioning block; 11, top anti-disengagement plate; 12, upper shrapnel; 13, pin connection head; 14, titanium alloy inner lining tube; 15, internal thread surface; 16, lens passing slot. Specific embodiments
[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0029] Embodiment 1: Please refer to Figures 1-6 , a cylindrical motor, including a bearing base 1, an outer ring at the top of the bearing base 1 is fixedly connected with a cylindrical shell 6, a magnet 7 is fixedly connected to the inner wall of the cylindrical shell 6, an internal-threaded annular carrier 9 is arranged above the bearing base 1, a coil 8 is wound around the outside of the internal-threaded annular carrier 9, a lower shrapnel 5 is installed at the bottom of the internal-threaded annular carrier 9, and a shrapnel fracture prevention structure is arranged at the bottom of the lower shrapnel 5;
[0030] Please refer to Figures 1-6 , a cylindrical motor further includes a shrapnel fracture prevention structure, the shrapnel fracture prevention structure includes a terminal connection piece 2, the terminal connection piece 2 is arranged below the lower shrapnel 5, a plurality of shrapnel connection heads 3 are fixedly connected to the top of the terminal connection piece 2, and metal terminals 4 are respectively fixedly connected to the front and rear ends of the bearing base 1;
[0031] The top of the spring connector 3 is connected to the bottom of the lower spring 5, the top of the terminal connector 2 is in contact with the bottom of the lower spring 5, and the two are not connected. One end of the terminal connector 2 is connected to the top of the metal terminal 4, and the terminal connector 2, the spring connector 3, the metal terminal 4, and the lower spring 5 are electrically connected. A lens through groove 16 is provided at the middle position of the supporting base 1. The cylindrical shell 6 has a diameter of 6.5 mm. The outer diameter of the internal threaded ring carrier 9 is consistent with the inner diameter of the coil 8. The outer diameter of the internal threaded ring carrier 9 is larger than the inner diameter of the internal thread surface 15. The split structure can reduce the probability of the spring being broken during processing, improve the product yield, and reduce the processing cost.
[0032] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, the cylindrical shell 6 with a diameter of 6.5 mm makes the overall size of the endoscope end smaller, which can reduce the patient's pain when in use. The metal terminal 4 and the lower spring piece 5 are independent of each other, and the connection between the two is achieved through the spring piece connector 3 on the terminal connecting piece 2. The split structure reduces the processing difficulty, can effectively improve the yield rate, and save production costs.
[0033] Embodiment 2: Top positioning blocks 10 are fixedly connected to the front and rear ends and the left and right sides of the top of the internally threaded annular carrier 9, and a top anti-slip plate 11 is arranged above the top positioning blocks 10. The top positioning blocks 10 are arranged at equal intervals, and the top positioning blocks 10 coincide with the vertical center line of the internally threaded annular carrier 9. The position sizes of the top positioning blocks 10 and the top anti-slip plate 11 correspond to each other one by one. The surface area of the bottom end of the top anti-slip plate 11 is larger than the surface area of the top end of the top positioning block 10. The outer side surface of the top anti-slip plate 11 is connected to the inner side surface of the top end of the cylindrical shell 6. The top end of the top anti-slip plate 11 is flush with the top end of the cylindrical shell 6. An upper spring plate 12 is installed on the top of the internally threaded annular carrier 9. The top end of the upper spring plate 12 is connected to the inner wall of the cylindrical shell 6, which can limit the displacement path of the carrier and prevent it from falling out.
[0034] Specifically, Figure 1 , Figure 4 and Figure 5 As shown, during the continuous upward movement of the internally threaded ring carrier 9, the top positioning block 10 at the top of the internally threaded ring carrier 9 is blocked by the top anti-slip plate 11, limiting the amplitude of its upward displacement. This can protect the upper spring piece 12 from structural damage caused by excessive deformation, and at the same time prevent the internally threaded ring carrier 9 from falling out.
[0035] Embodiment 3: The front end on one side of the bottom of the bearing base 1 and the rear end on the other side of the bottom are respectively fixedly connected with pin connectors 13. A titanium alloy inner lining tube 14 is fixedly connected inside the pin connector 13. An internal thread surface 15 is vertically arranged inside the titanium alloy inner lining tube 14. The vertical center lines of the pin connector 13 and the titanium alloy inner lining tube 14 coincide, which can increase the strength of the screw connection position and reduce the probability of over-tightening and thread slipping.
[0036] Specifically, as Figure 1 and Figure 6 shown, the titanium alloy inner lining tube 14 inside the pin connector 13 is used for driving in screws. The screws pass through the end base of the wire harness and are screwed into the titanium alloy inner lining tube 14. The external threads of the screws and the internal thread surface 15 inside the titanium alloy inner lining tube 14 are engaged with each other, and the installation can be completed. The titanium alloy inner lining tube 14 has greater strength and stronger wear resistance than the pin connector 13 made of stainless steel, and it is not easy to have the phenomenon of thread slipping.
[0037] Working principle: When the utility model is in use, first, the endoscope lens module is installed in the internally threaded annular carrier 9. The threads outside the lens module and the threads inside the internally threaded annular carrier 9 are engaged and locked. When focusing, power is supplied at the metal terminal 4, and the current passes through the metal terminal 4, terminal connecting piece 2, elastic piece connecting head 3, and lower elastic piece 5 in sequence and is transmitted to the coil 8 outside the internally threaded annular carrier 9. After the coil 8 is energized, a magnetic force is generated. Under the action of the magnetic field generated by the magnet 7, the internally threaded annular carrier 9 is driven to move upward, and the lens module synchronously moves upward. When the internally threaded annular carrier 9 moves upward, the lower elastic piece 5 is pulled upward by the tensile force and deforms, and the upper elastic piece 12 deforms synchronously under the thrust action. When the current is disconnected, the lower elastic piece 5 and the upper elastic piece 12 rebound synchronously to reset the internally threaded annular carrier 9. The cylindrical shell 6 with a diameter of 6.5 mm makes the overall size of the end of the endoscope smaller, and the pain of the patient can be reduced during use. The metal terminal 4 and the lower elastic piece 5 are independent of each other, and their connection is realized through the elastic piece connecting head 3 on the terminal connecting piece 2. The split structure reduces the processing difficulty, can effectively improve the yield rate, and saves the production cost. As the internally threaded annular carrier 9 moves upward, the upper elastic piece 12 deforms synchronously under the thrust action. During the continuous upward movement of the internally threaded annular carrier 9, the top positioning block 10 at the top of the internally threaded annular carrier 9 is blocked by the top anti-disengagement plate 11, restricting the amplitude of its upward movement, which can protect the upper elastic piece 12 from excessive deformation and causing structural damage, and at the same time can prevent the internally threaded annular carrier 9 from coming off. When installing the endoscope lens, the bearing base 1 and the end of the wire harness base are connected by screws. The titanium alloy inner liner 14 inside the pin connecting head 13 is used to drive in the screws. The screws pass through the end of the wire harness base and are screwed into the titanium alloy inner liner 14. The threads outside the screws and the internal thread surface 15 inside the titanium alloy inner liner 14 are engaged, and the installation can be completed. The titanium alloy inner liner 14 has greater strength and wear resistance than the stainless steel pin connecting head 13 and is not prone to thread slipping.
[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed by the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A cylindrical motor, comprising a bearing base (1), characterized in that: The outer ring of the top of the bearing base (1) is fixedly connected to a cylindrical shell (6), and the inner wall of the cylindrical shell (6) is fixedly connected to a magnet (7). An internally threaded annular carrier (9) is arranged above the bearing base (1), and a coil (8) is wound around the outside of the internally threaded annular carrier (9). A lower spring sheet (5) is installed at the bottom of the internally threaded annular carrier (9). The front and rear ends and the left and right sides of the top of the internally threaded annular carrier (9) are respectively fixedly connected to a top positioning block (10), and a top anti-slip plate (11) is arranged above the top positioning block (10). The front end on one side of the bottom of the bearing base (1) and the rear end on the other side of the bottom are respectively fixedly connected to a pin connector (13), and the interior of the pin connector (13) is fixedly connected to a titanium alloy liner tube (14), and a structure for preventing the spring sheet from breaking is arranged at the bottom of the lower spring sheet (5); The structure for preventing spring fragments from breaking comprises a terminal connecting piece (2), wherein the terminal connecting piece (2) is arranged below a lower spring fragment (5), a plurality of sets of spring fragment connectors (3) are fixedly connected to the top of the terminal connecting piece (2), and metal terminals (4) are fixedly connected to the front and rear ends of the supporting base (1), respectively.
2. A cylindrical motor according to claim 1, characterized in that: The top of the spring connector (3) is connected to the bottom of the lower spring (5), and the top of the terminal connector (2) is in contact with the bottom of the lower spring (5), but the two are not connected.
3. A cylindrical motor according to claim 1, characterized in that: One end of the terminal connecting piece (2) is connected to the top of the metal terminal (4), and the terminal connecting piece (2), the spring-type connector (3), the metal terminal (4), and the lower spring-type connector (5) are electrically connected.
4. A cylindrical motor according to claim 1, characterized in that: A lens passage slot (16) is provided at the middle position of the bearing base (1), and the cylindrical housing (6) has a diameter of 6.5 mm.
5. A cylindrical motor according to claim 1, characterized in that: The outer diameter of the internally threaded annular carrier (9) is consistent with the inner diameter of the coil (8), and the outer diameter of the internally threaded annular carrier (9) is greater than the inner diameter of the internal thread surface (15).
6. A cylindrical motor according to claim 1, characterized in that: The top positioning blocks (10) are arranged at equal intervals, and the top positioning blocks (10) coincide with a vertical center line of the internal threaded annular carrier (9).
7. A cylindrical motor according to claim 1, characterized in that: The positions and sizes of the top positioning block (10) and the top anti-slip plate (11) correspond one to one, and the surface area of the bottom end of the top anti-slip plate (11) is larger than the surface area of the top end of the top positioning block (10).
8. A cylindrical motor according to claim 1, characterized in that: The outer side surface of the top anti-slip plate (11) is connected to the inner side surface of the top end of the cylindrical outer shell (6), and the top end of the top anti-slip plate (11) is flush with the top end of the cylindrical outer shell (6).
9. The cylindrical motor according to claim 1, characterized in that: An upper spring sheet (12) is mounted on the top of the internally threaded annular carrier (9), and the top end of the upper spring sheet (12) is connected to the inner wall of the cylindrical outer shell (6).
10. The cylindrical motor according to claim 1, characterized in that: An internal threaded surface (15) is vertically arranged inside the titanium alloy inner liner tube (14), and the vertical center lines of the pin connector (13) and the titanium alloy inner liner tube (14) coincide with each other.