Cap-type harmonic reducer

Abstract

The utility model relates to harmonic reducer technical field, concretely is a cap type harmonic reducer, including harmonic reducer main part, one end of harmonic reducer main part is fixedly connected with load arm, the one end of harmonic reducer main part is equipped with the threaded hole, one end of load arm is equipped with the threaded hole, the threaded hole is connected with the internal hexagon screw in the thread, one end of harmonic reducer main part is fixedly connected with the connecting locking assembly, the utility model provides a cap type harmonic reducer mainly through fixedly connecting multiple connecting locking assemblies at one end of harmonic reducer main part, through the spring extrusion locking pin and the rubber pad fixed at its both sides move in the locking slot and insert into the limiting recess groove set up in the middle of internal hexagon screw, extrude locking to the internal hexagon screw of screwing, avoid the work vibration and make the internal hexagon screw loose, when disassembling, only need to pull the pull -on cap and be stuck in the arc -shaped support sliding block in the both sides limiting sliding slot, that is, remove the connecting locking and unscrew the screw.

Description

Technical Field

[0001] This utility model relates to the field of harmonic reducer technology, specifically a hat-shaped harmonic reducer. Background Technology

[0002] The hat-shaped harmonic reducer is a compact, efficient, and precision transmission device. Its core consists of a wave generator, flexible gears, and rigid gears. It achieves high reduction ratios and zero backlash transmission through elastic deformation. It features small size, light weight, and high torque density, and is widely used in industrial robots, aerospace, and medical equipment. It is especially suitable for scenarios where space is limited but the requirements for precision and reliability are stringent.

[0003] Chinese Patent CN212251040U discloses a hat-shaped harmonic reducer, belonging to the field of harmonic reducers. Its purpose is to improve the accuracy and reliability of the hat-shaped harmonic reducer by modifying its structure. It includes a wave generator, a flexible wheel, and mating components. The flexible wheel includes a flexible wheel body and a flexible wheel ring integrally connected to the flexible wheel body. External teeth are arranged circumferentially on the outer wall of the flexible wheel body. The wave generator is mounted on the inner circumference of the flexible wheel body via bearings. This application optimizes the structure, making its output more stable and precise, increasing the stability and accuracy of the harmonic reducer's operation. Simultaneously, based on component improvements, the assembly process of the hat-shaped harmonic reducer is simplified, improving enterprise production efficiency. Actual testing shows that the hat-shaped harmonic reducer of this application exhibits high motion accuracy, smooth motion, low noise, high transmission efficiency, and a certain improvement in service life during use.

[0004] The above-mentioned scheme and existing technology of cap-type harmonic reducer are usually connected and fixed at one end by connecting the flange bolt hole to the bolt hole on the connecting arm. However, during the rotation of the connecting arm, the bolt is prone to loosening over time, affecting the normal use of the connecting arm. People often apply connecting glue to the bolt in advance during installation to avoid loosening during use. However, the use of screw glue also makes disassembly and maintenance more inconvenient. There is a lack of corresponding cap-type harmonic reducer structure that is convenient and stable for connection and disassembly, which needs to be improved and optimized. Utility Model Content

[0005] The purpose of this invention is to provide a hat-shaped harmonic reducer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hat-shaped harmonic reducer includes a harmonic reducer body, a load arm is fixedly connected to one end of the harmonic reducer body, a threaded hole is provided at one end of the harmonic reducer body, a threaded hole is provided at one end of the load arm, an internal hexagon screw is threaded into the threaded hole, and a connection locking component is fixedly connected to one end of the harmonic reducer body.

[0007] Preferably, one end of the load arm is provided with a sealing groove, and an O-ring is inserted into the sealing groove.

[0008] Preferably, one end of the load arm is fixedly connected to a positioning pin, and one end of the harmonic reducer body is provided with a positioning hole, in which a positioning pin is inserted.

[0009] Preferably, one end of the internal hexagon screw is provided with a limiting groove.

[0010] Preferably, the connection locking assembly includes a connecting block, a locking slot in the middle of the connecting block, a locking pin inserted into the locking slot, one end of the locking pin being inserted into a limiting groove, and a spring groove at one end of the connecting block.

[0011] Preferably, one end of the locking pin is symmetrically fixedly connected to two sets of rubber pads, the other end of the locking pin is fixedly connected to a lifting cap, one end of the lifting cap is fixedly connected to a spring, and one end of the spring is fixedly connected to a spring groove.

[0012] Preferably, the connecting block has two sets of limiting grooves symmetrically provided at both ends, and an arc-shaped support slider is slidably engaged in the limiting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The present invention proposes a cap-type harmonic reducer, which mainly uses multiple sets of connecting and locking components fixedly connected to one end of the harmonic reducer body. By using springs to compress the locking pin and the rubber pads fixed on both sides, the pin moves in the locking slot and inserts into the limiting groove set in the middle of the internal hexagon screw, thereby compressing and locking the tightened internal hexagon screw and preventing the internal hexagon screw from loosening due to working vibration. When disassembling, it is only necessary to pull the cap and lock it on the arc-shaped support slider in the limiting slide groove on both sides to release the connection lock and unscrew the screw. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a hat-shaped harmonic reducer;

[0016] Figure 2 An exploded view of a partial structure of a hat-shaped harmonic reducer;

[0017] Figure 3An exploded view of a partial structure of a hat-shaped harmonic reducer from another perspective;

[0018] Figure 4 This is a partial structural cross-sectional view of a hat-shaped harmonic reducer;

[0019] Figure 5 for Figure 4 Enlarged diagram of part A in the middle;

[0020] Figure 6 This is a partial structural cross-sectional view of a hat-shaped harmonic reducer.

[0021] In the diagram: 1. Harmonic reducer body; 2. Load arm; 3. Threaded hole; 4. Socket head screw; 501. Connecting block; 502. Locking slot; 503. Locking pin; 504. Spring groove; 505. Lifting cap; 506. Spring; 507. Limiting slide groove; 508. Arc-shaped support slider; 509. Rubber pad; 6. Sealing groove; 7. O-ring seal; 8. Positioning pin; 9. Positioning hole; 10. Limiting groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1-6 The present invention provides the following two preferred embodiments:

[0024] Example 1: A cap-type harmonic reducer includes a harmonic reducer body 1, a load arm 2 fixedly connected to one end of the harmonic reducer body 1, a threaded hole 3 at one end of the harmonic reducer body 1, a threaded hole 3 at one end of the load arm 2, an internal hexagon screw 4 threaded into the threaded hole 3, a connection locking component fixedly connected to one end of the harmonic reducer body 1; a sealing groove 6 at one end of the load arm 2, an O-ring 7 inserted into the sealing groove 6; a positioning pin 8 fixedly connected to one end of the load arm 2, a positioning hole 9 at one end of the harmonic reducer body 1, and a positioning pin 8 inserted into the positioning hole 9.

[0025] During use, connect the flange and motor to one end of the harmonic reducer body 1. Insert the O-ring 7 into the sealing groove 6 at one end of the load arm 2 to ensure dustproof and waterproof performance when the harmonic reducer body 1 and the load arm 2 are connected. Then, align the multiple sets of positioning pins 8 at one end of the load arm 2 with the positioning holes 9 at one end of the harmonic reducer body 1 for pre-positioning. By connecting the positioning pins 8 on the load arm 2 with the positioning holes 9 of the harmonic reducer body 1, sub-millimeter level alignment accuracy is achieved, avoiding installation stress caused by misalignment of the threaded holes 3 or inability to install the hexagon socket screws 4. Then, screw the multiple sets of hexagon socket screws 4 into the threaded holes 3 respectively. During installation, use a torque wrench to screw the hexagon socket screws 4 into the threaded holes 3 in a crisscross sequence. Set the torque value to 80% of the rated value for pre-tightening. After checking that the connection and installation are flat, tighten all the hexagon socket screws 4 in sequence and lock them with the connecting locking component to prevent loosening.

[0026] Example 2: Based on Example 1, the internal hexagon screw 4 has a limiting groove 10 at one end; the connecting locking assembly includes a connecting block 501, a locking slot 502 in the middle of the connecting block 501, a locking pin 503 inserted into the locking slot 502, one end of the locking pin 503 inserted into the limiting groove 10, and a spring groove 504 at one end of the connecting block 501; two sets of rubber pads 509 are symmetrically fixedly connected to one end of the locking pin 503, and a lifting cap 505 is fixedly connected to the other end of the locking pin 503; a spring 506 is fixedly connected to one end of the lifting cap 505, and one end of the spring 506 is fixedly connected to the spring groove 504; two sets of limiting slide grooves 507 are symmetrically provided at both ends of the connecting block 501, and an arc-shaped support slider 508 is slidably engaged in the limiting slide groove 507.

[0027] During use, before inserting the hex socket screw 4, to prevent the arc-shaped support slider 508 from blocking the screw 4 from being screwed into the threaded hole 3, pull the lifting cap 505 on the locking assembly in advance. This will move the locking pin 503 and the rubber pad 509. Pull the locking pin 503 and the rubber pad 509 until they are disengaged from the threaded hole 3. At this time, simultaneously push the arc-shaped support sliders 508 on both sides, allowing them to slide within the limiting groove 507 and move them to a position below the lifting cap 505. After releasing the lifting cap 505, under the pulling action of the spring 506, the lifting cap 505 presses against the arc-shaped support sliders 508 on both sides. The lifting cap 505 is blocked by the arc-shaped support sliders 508. At this time, the locking pin 503 in the locking slot 502 and the rubber pads 509 on both sides disengage from the threaded hole 3. Then, screw in the hex socket screw 4 in sequence. After all hexagonal screws 4 are tightened, the limiting groove 10 on the socket head cap 4 is aligned with the limiting slide 507. Pull the lifting cap 505 in sequence and move the two arc-shaped support sliders 508 to the sides. After releasing the lifting cap 505, the locking pin 503 and the rubber pads 509 on both sides are inserted into the limiting groove 10 on the socket head cap 4 under the pull of the spring 506 to fix the socket head cap 4 and effectively prevent the socket head cap 4 from loosening during use. When disassembling, pull out the lifting cap 505 in sequence and move the two arc-shaped support sliders 508 to the bottom of the lifting cap 505 so that the locking pin 503 and the rubber pads 509 are disengaged from the limiting groove 10 and the threaded hole 3. Release the lifting cap 505, and the lifting cap 505 presses against the arc-shaped support slider 508. The locking of the socket head cap 4 is released, and it can be unscrewed.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cap-type harmonic reducer, comprising a harmonic reducer body (1), characterized in that: The harmonic reducer body (1) is fixedly connected to a load arm (2) at one end. The harmonic reducer body (1) is provided with a threaded hole (3) at one end. The load arm (2) is provided with a threaded hole (3) at one end. The threaded hole (3) is internally threaded with an internal hexagon screw (4). The harmonic reducer body (1) is fixedly connected to a connection locking component at one end.

2. The cap-type harmonic reducer according to claim 1, characterized in that: One end of the load arm (2) is provided with a sealing groove (6), and an O-ring (7) is inserted into the sealing groove (6).

3. The cap-type harmonic reducer according to claim 1, characterized in that: One end of the load arm (2) is fixedly connected to a positioning pin (8), and one end of the harmonic reducer body (1) is provided with a positioning hole (9), in which a positioning pin (8) is inserted.

4. The cap-type harmonic reducer according to claim 1, characterized in that: One end of the internal hex screw (4) is provided with a limiting groove (10).

5. A cap-type harmonic reducer according to claim 1, characterized in that: The connection locking assembly includes a connecting block (501), a locking slot (502) is provided in the middle of the connecting block (501), a locking pin (503) is inserted into the locking slot (502), one end of the locking pin (503) is inserted into the limiting groove (10), and one end of the connecting block (501) is provided with a spring groove (504).

6. A cap-type harmonic reducer according to claim 5, characterized in that: Two sets of rubber pads (509) are symmetrically fixedly connected to one end of the locking pin (503), and a lifting cap (505) is fixedly connected to the other end of the locking pin (503). A spring (506) is fixedly connected to one end of the lifting cap (505), and one end of the spring (506) is fixedly connected to the spring groove (504).

7. A cap-type harmonic reducer according to claim 5, characterized in that: The connecting block (501) has two sets of limiting grooves (507) symmetrically arranged at both ends, and an arc-shaped support slider (508) is slidably engaged in the limiting groove (507).

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