Processing and assembling device on medical instrument special motor
By designing a machining and assembly device that includes a clamping sleeve and a wedge-shaped clamping block, the problem of unstable clamping of the motor housing during assembly was solved, the accuracy and efficiency of hole machining were improved, and the clamping process was simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENGZHOU WANYUAN ELECTRICAL TECH CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-24
AI Technical Summary
In the assembly process of brushless DC motors for medical devices, existing technologies have difficulty effectively clamping the motor housing, resulting in low precision and efficiency in hole machining.
A processing and assembly device was designed, which includes a clamping sleeve, a wedge-shaped clamping block, a needle roller, a tensioning and limiting component, and a pressing ring plate. Through the combination of the wedge-shaped clamping block and the needle roller, combined with the magnetic material attraction and adjustment structure, stable clamping and convenient clamping of the motor housing can be achieved.
It achieves effective clamping of the motor housing, improves the accuracy and efficiency of hole machining, and simplifies the clamping process of the motor housing.
Smart Images
Figure CN224555432U_ABST
Abstract
Description
Technical Field:
[0001] The utility model relates to the technical field of motors, and more specifically, to a processing and assembly device for a motor dedicated to medical devices. Background Art:
[0002] The motor for medical devices is a core component of medical equipment, and its performance directly affects the operation effect of the equipment and the treatment experience of patients. Currently, the motors for medical devices include brushless DC motors, stepper motors, linear motors, coreless motors, etc. Among them, the brushless DC motors are widely used in various medical devices, and most of the brushless DC motors are also reduction motors. As shown in the structure of the motor housing in the specification drawings Figure 4 It includes a main housing 91 for installing a stator and a rotor. The upper part of the main housing 91 is respectively provided with a cylindrical ring-shaped reducer housing 93 and a head 92. Positioning connection rings are provided on both the head 92 and the main housing 91. After the positioning connection rings are inserted into both ends of the reducer housing 93, they are assembled and connected together by screws. The screws are countersunk screws; during specific assembly, it is necessary to connect the matching main housing 91, head 92, and reducer housing 93 and then drill holes, rather than drilling holes separately, so as to ensure the installation accuracy. When drilling holes, it is necessary to ensure that the motor housing 9 composed of the main housing 91, head 92, and reducer housing 93 does not move, and a corresponding clamping and drilling fixture needs to be designed. Content of the Utility Model:
[0003] The purpose of the utility model is to provide a processing and assembly device for a motor dedicated to medical devices in view of the deficiencies of the prior art. It effectively clamps the outer housing of the motor, facilitates the processing of connection holes on the outer housing, and at the same time, the clamping of the outer housing is convenient and fast.
[0004] A processing and assembly device for a motor dedicated to medical devices includes a vertically cylindrical clamping sleeve seat. A flange is formed at the bottom end of the clamping sleeve seat, and several mounting holes are formed on the flange. On the inner wall of the upper part of the clamping sleeve seat, several convex ribs with an isosceles trapezoidal horizontal cross-section are formed. A wedge-shaped slot is formed in the middle of the convex ribs, and a wedge-shaped clamping block is inserted into the slot. On the side of the wedge-shaped clamping block close to the center of the clamping sleeve seat, a V-shaped clamping mouth is formed. On the end face on the side背离 the center of the clamping sleeve seat, several needle rollers are inserted. The needle rollers are distributed on the upper and lower parts of the wedge-shaped clamping block and respectively abut against the bottom surface of the slot. Avoidance holes in the shape of upper and lower groups of waist-shaped holes are formed on the wedge-shaped clamping block between the needle rollers;
[0005] On the outer wall of the upper part of the clamping sleeve seat, a vertical avoidance groove facing the avoidance hole is formed. A tension limiting member is inserted into the avoidance groove. The tension limiting member includes a T-shaped limiting pin. The end of the limiting pin is fixedly connected to the middle of the wedge-shaped clamping block. A spring and a gasket are sleeved on the limiting pin. The two ends of the spring respectively press against the head of the limiting pin and the gasket. The gasket presses against the outer wall of the clamping sleeve seat;
[0006] The upper end of the wedge-shaped clamping block extends out of the clamping sleeve seat and abuts against a press-fitting ring plate with an L-shaped cross-section. The press-fitting ring plate is screwed on the upper part of the clamping sleeve seat; On the outer walls of both sides of the lower part of the clamping sleeve seat, vertical adjustment grooves are formed. A supporting bottom plate is inserted into the adjustment grooves, and both ends of the supporting bottom plate respectively extend out of the clamping sleeve seat and abut against the upper end faces of the adjusting sleeves. The adjusting sleeves are screwed on the clamping sleeve seat.
[0007] Preferably, the two side walls of the wedge-shaped clamping block respectively abut against the two side walls of the upper slot of the clamping sleeve seat; The depth of the upper end of the upper slot of the clamping sleeve seat is greater than the depth of the lower end of the slot;
[0008] The width of the avoidance groove on the clamping sleeve seat is greater than the width of the avoidance hole.
[0009] Preferably, both the wedge-shaped clamping block and the press-fitting ring plate are made of magnetic materials. An annular magnet is fixed on the inner bottom surface of the press-fitting ring plate. The upper end of the wedge-shaped clamping block is attracted to the press-fitting ring plate.
[0010] Preferably, a plurality of handles are formed on the outer wall of the press-fitting ring plate. The handles are evenly distributed in a ring around the central axis of the press-fitting ring plate;
[0011] A plurality of anti-slip grooves are formed on the outer wall of the adjusting sleeve. The anti-slip grooves are evenly distributed in a ring around the central axis of the adjusting sleeve.
[0012] Preferably, an observation groove is formed between adjacent adjustment grooves at the lower part of the clamping sleeve seat. The observation groove penetrates the lower end face of the clamping sleeve seat;
[0013] On the outer wall of the clamping sleeve seat at the avoidance groove, a flat cutting groove is formed. The gasket abuts against the bottom surface of the cutting groove.
[0014] Preferably, there are at least three groups of convex ribs on the clamping sleeve seat. The convex ribs are evenly distributed in a ring around the central axis of the clamping sleeve seat.
[0015] Preferably, on the end face of the wedge-shaped clamping block on the side背离 the center of the clamping sleeve seat, a circular arc-shaped clamping groove is formed. A needle roller is inserted into the clamping groove of the wedge-shaped clamping block. The inner arc wall of the clamping groove and the outer wall of the needle roller are in the same cylindrical surface. The arc radian of the clamping groove is greater than π.
[0016] The beneficial effects of the present utility model are as follows:
[0017] This processing and assembly device effectively clamps the outer shell of the motor, facilitating the machining of the connection holes on the outer shell, and at the same time, the clamping of the outer shell is convenient and fast. Description of the Drawings:
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;
[0019] Figure 2 It is a front-view structural schematic diagram of the present utility model;
[0020] Figure 3 It is a top-view structural schematic diagram of the present utility model;
[0021] Figure 4 It is a semi-sectional side-view structural schematic diagram of the present utility model.
[0022] In the figure: 1, clamping sleeve seat; 11, convex rib; 12, slot; 13, flange; 14, mounting hole; 15, relief groove; 16, cutting groove; 17, adjustment groove; 18, observation groove; 2, wedge-shaped clamping block; 21, clamping mouth; 22, relief hole; 3, needle roller; 4, press-fitting ring plate; 41, handle; 5, supporting bottom plate; 6, adjusting screw sleeve; 61, anti-slip groove; 7, tensioning and limiting member; 71, limiting pin; 72, spring; 73, gasket; 8, magnet; 9, motor housing; 91, main housing; 92, head; 93, reducer housing. Detailed Implementation Manner:
[0023] Embodiment: As shown in Figures 1 to 4 A processing and assembly device for a medical device special motor includes a vertically cylindrical clamping sleeve seat (No. 1). The bottom end of the clamping sleeve seat (No. 1) is formed with a flange (No. 13), and several mounting holes (No. 14) are formed on the flange (No. 13). On the inner wall of the upper part of the clamping sleeve seat (No. 1), several convex ribs (No. 11) with an isosceles trapezoidal horizontal cross-section are formed. A wedge-shaped slot (No. 12) is formed in the middle of the convex rib (No. 11). A wedge-shaped clamping block (No. 2) is inserted into the slot (No. 12). On one side of the wedge-shaped clamping block (No. 2) close to the center of the clamping sleeve seat (No. 1), a V-shaped clamping mouth (No. 21) is formed. On the end face of the side of the wedge-shaped clamping block (No. 2)背离装夹套座1中心一侧的端面上插设有若干滚针3,滚针3分布在楔形夹持块2的上、下部并分别抵靠在插槽12的底面上,滚针3之间的楔形夹持块2上成型有上、下两组腰型孔状的避让孔22;
[0024] On the outer wall of the upper part of the clamping sleeve seat (No. 1), a vertically formed relief groove (No. 15) that is aligned with the relief hole (No. 22) is provided. A tensioning and limiting member (No. 7) is inserted into the relief groove (No. 15). The tensioning and limiting member (No. 7) includes a T-shaped limiting pin (No. 71). The end of the limiting pin (No. 71) is fixedly connected to the middle of the wedge-shaped clamping block (No. 2). A spring (No. 72) and a gasket (No. 73) are inserted on the limiting pin (No. 71). The two ends of the spring (No. 72) are respectively pressed against the head of the limiting pin (No. 71) and the gasket (No. 73), and the gasket (No. 73) is pressed against the outer wall of the clamping sleeve seat (No. 1); It should be noted that in the translation of the content in item , there is an unclear part in the original text "背离装夹套座1中心一侧的端面上插设有若干滚针3,滚针3分布在楔形夹持块2的上、下部并分别抵靠在插槽12的底面上,滚针3之间的楔形夹持块2上成型有上、下两组腰型孔状的避让孔22;" which may need further confirmation and correction according to the accurate meaning. Here is a rough translation based on the current text.
[0025] The upper end of the wedge-shaped clamping block 2 extends out of the clamping sleeve seat 1 and abuts against the press-fitting ring plate 4 with an L-shaped cross-section. The press-fitting ring plate 4 is screwed to the upper part of the clamping sleeve seat 1. On both outer walls of the lower part of the clamping sleeve seat 1, vertical adjustment grooves 17 are formed. A supporting bottom plate 5 is inserted into the adjustment grooves 17. Both ends of the supporting bottom plate 5 extend out of the clamping sleeve seat 1 and abut against the upper end surfaces of the adjusting screw sleeves 6. The adjusting screw sleeves 6 are screwed to the clamping sleeve seat 1.
[0026] Both side walls of the wedge-shaped clamping block 2 respectively abut against both side walls of the upper slot 12 on the clamping sleeve seat 1. The depth of the upper end of the upper slot 12 on the clamping sleeve seat 1 is greater than the depth of the lower end of the slot 12. The slot 12 can limit the sway of the wedge-shaped clamping block 2.
[0027] The width of the avoidance groove 15 on the clamping sleeve seat 1 is greater than the width of the avoidance hole 22, avoiding interference between the drill bit and the clamping sleeve seat 1 during drilling.
[0028] Both the wedge-shaped clamping block 2 and the press-fitting ring plate 4 are made of magnetic materials. An annular magnet 8 is fixed on the inner bottom surface of the press-fitting ring plate 4. The upper end of the wedge-shaped clamping block 2 is attracted to the press-fitting ring plate 4. When the wedge-shaped clamping block 2 does not clamp the motor housing, the magnet 8 can be used to realize the up and down movement of the wedge-shaped clamping block 2 together with the press-fitting ring plate 4.
[0029] A number of handles 41 are formed on the outer wall of the press-fitting ring plate 4. The handles 41 are evenly distributed in a ring around the central axis of the press-fitting ring plate 4. The handles 41 facilitate the rotation of the press-fitting ring plate 4.
[0030] A number of anti-slip grooves 61 are formed on the outer wall of the adjusting screw sleeve 6. The anti-slip grooves 61 are evenly distributed in a ring around the central axis of the adjusting screw sleeve 6. Similarly to the above, the anti-slip grooves 61 facilitate the rotation of the adjusting screw sleeve 6.
[0031] An observation groove 18 is formed between adjacent adjustment grooves 17 at the lower part of the clamping sleeve seat 1. The observation groove 18 penetrates the lower end surface of the clamping sleeve seat 1.
[0032] A flat cutting groove 16 is formed on the outer wall of the clamping sleeve seat 1 at the avoidance groove 15. The gasket 73 abuts against the bottom surface of the cutting groove 16.
[0033] At least three groups of convex ribs 11 are provided on the clamping sleeve seat 1. The convex ribs 11 are evenly distributed in a ring around the central axis of the clamping sleeve seat 1.
[0034] An arc-shaped clamping groove is formed on the end face of the wedge-shaped clamping block 2 on the side背离 the center of the clamping sleeve seat 1. The needle roller 3 is inserted into the clamping groove of the wedge-shaped clamping block . The arc inner wall of the clamping groove and the outer wall of the needle roller 3 are in the same cylindrical surface, and the arc radian of the clamping groove is greater than π.
[0035] Working principle: This structure is a processing and assembly device for a motor, specifically a fixture for clamping the motor housing. By rotating and adjusting the screw sleeve 6, the height of the supporting bottom plate 5 can be changed, thereby facilitating the upper ends of the reducer housings 93 on the motor housing 9 to be located within the two relief holes 22 of the wedge-shaped clamping block 2.
[0036] After adjusting the height of the supporting bottom plate 5, the main housing 91, the reducer housing 93, and the head 92 are sequentially placed into the clamping sleeve seat 1 and then set on the supporting bottom plate 5. Then, by rotating the press-fitting ring plate 4, the wedge-shaped clamping block 2 is driven to move downward. While the wedge-shaped clamping block 2 moves downward under the restriction of the bottom surface of the inner slot 12 of the convex rib 11, it will move towards the center of the clamping sleeve seat 1, thereby clamping and fixing the outer wall of the motor housing 9; the clamping and fixing of the motor housing 9 are realized; the drill bit can perform drilling on the motor housing 9 through the relief holes 22.
[0037] The described embodiments are used to illustrate the present invention by way of example, rather than to limit the present invention. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of the rights protected by the present invention shall be as set forth in the claims of the present invention.
Claims
1. A processing and assembly device for a special motor for medical devices, comprising a vertical cylindrical clamping sleeve (1), wherein a flange edge (13) is formed at the bottom end of the clamping sleeve (1), and a plurality of mounting holes (14) are formed on the flange edge (13), characterized in that: The inner wall of the upper part of the clamping sleeve (1) is formed with several horizontal cross sections in the shape of isosceles trapezoids (11). The middle part of the convex rib (11) is formed with a wedge-shaped slot (12). A wedge-shaped clamping block (2) is inserted into the slot (12). A V-shaped clamping mouth (21) is formed on the side of the wedge-shaped clamping block (2) near the center of the clamping sleeve (1). Several rollers (3) are inserted on the end face away from the center of the clamping sleeve (1). The rollers (3) are distributed on the upper and lower parts of the wedge-shaped clamping block (2) and abut against the bottom surface of the slot (12). Two sets of waist-shaped clearance holes (22) are formed on the wedge-shaped clamping block (2) between the rollers (3). The upper outer wall of the clamping sleeve (1) is formed with a vertical clearance groove (15) that is directly opposite to the clearance hole (22). A tensioning limit member (7) is inserted in the clearance groove (15). The tensioning limit member (7) includes a T-shaped limit pin (71). The end of the limit pin (71) is fixed to the middle of the wedge-shaped clamping block (2). A spring (72) and a washer (73) are inserted on the limit pin (71). The two ends of the spring (72) are pressed against the head of the limit pin (71) and the washer (73) respectively. The washer (73) is pressed against the outer wall of the clamping sleeve (1). The upper end of the wedge-shaped clamping block (2) extends out of the clamping sleeve (1) and abuts against the L-shaped pressing ring plate (4), which is screwed onto the upper part of the clamping sleeve (1). Vertical adjustment grooves (17) are formed on the outer walls of both sides of the lower part of the clamping sleeve (1). A supporting base plate (5) is inserted into the adjustment groove (17). The two ends of the supporting base plate (5) extend out of the clamping sleeve (1) and abut against the upper end face of the adjusting screw sleeve (6), which is screwed onto the clamping sleeve (1).
2. The processing and assembly device for a medical device-specific motor according to claim 1, characterized in that: The two side walls of the wedge-shaped clamping block (2) abut against the two side walls of the slot (12) on the clamping sleeve (1); the depth of the upper end of the slot (12) on the clamping sleeve (1) is greater than the depth of the lower end of the slot (12); The width of the clearance groove (15) on the clamping sleeve (1) is greater than the width of the clearance hole (22).
3. The processing and assembly device for a medical device-specific motor according to claim 2, characterized in that: Both the wedge-shaped clamping block (2) and the pressing ring plate (4) are made of magnetic material. An annular magnet (8) is fixed on the inner bottom surface of the pressing ring plate (4), and the upper end of the wedge-shaped clamping block (2) is held on the pressing ring plate (4).
4. The processing and assembly device for a medical device-specific motor according to claim 1, characterized in that: Several handles (41) are formed on the outer wall of the press-fit ring plate (4), and the handles (41) are evenly distributed in a ring around the central axis of the press-fit ring plate (4). The outer wall of the adjusting screw sleeve (6) is formed with several anti-slip grooves (61), which are evenly distributed in a ring around the central axis of the adjusting screw sleeve (6).
5. The processing and assembly device for a medical device-specific motor according to claim 1, characterized in that: An observation groove (18) is formed between adjacent adjustment grooves (17) at the lower part of the clamping sleeve (1), and the observation groove (18) penetrates the lower end face of the clamping sleeve (1). A planar groove (16) is formed on the outer wall of the clamping sleeve (1) at the clearance groove (15), and the gasket (73) abuts against the bottom surface of the groove (16).
6. The processing and assembly device for a medical device-specific motor according to claim 1, characterized in that: The clamping sleeve (1) has at least three sets of protruding ribs (11), which are evenly distributed in a ring around the central axis of the clamping sleeve (1).
7. The processing and assembly device for a medical device-specific motor according to claim 1, characterized in that: The wedge-shaped clamping block (2) has an arc-shaped groove formed on the end face opposite to the center of the clamping sleeve (1). The roller (3) is inserted into the groove of the wedge-shaped clamping block (2). The inner wall of the groove and the outer wall of the roller (3) are in the same cylindrical surface. The arc curvature of the groove is greater than π.