Snap spring mounting device

Abstract

The utility model discloses a snap spring installation device, including assembly fixture and tightening fixture, the assembly fixture installs snap spring in the snap spring groove of shaft, tightening fixture includes tightening base, collet and pressure head, tightening base vertically passes through and forms in the seat hole, collet vertically passes through and forms in the through hole, and the pressure head passes through the through hole. A pressing hole is formed in the surface of the pressing head; the size of the base hole is between the size of the top end of the elastic chuck and the size of the bottom end of the elastic chuck, the elastic chuck is arranged in the base hole of the tightening base in a penetrating mode, the shaft and the clamping spring are arranged in a penetrating hole of the elastic chuck in a penetrating mode, and the pressing head is arranged on the periphery of the shaft in a sleeving mode and abuts against the top end of the elastic chuck. The pressing head is pressed downwards, so that the elastic chuck tightens the clamping spring under the action of the tightening base. The tightening tool has the advantages that the outer side surfaces of the clamp springs abut against the inner side wall of the elastic chuck, and the tightening tool has a good tightening effect on the clamp springs installed in the clamp spring grooves.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft installation, in particular to a circlip installation device. Background Art

[0002] After the shaft is replaced in the built-in starter of the switch, the base, the retaining ring and the circlip are all installed on the shaft. The shaft is passed through the base and is threadedly connected with the base. The retaining ring and the circlip are sleeved around the shaft in sequence. A circlip groove is formed on the surface of the shaft, and the circlip is installed in the circlip groove of the shaft and tightened. The circlip is provided to limit the axial movement of the retaining ring.

[0003] Currently, during the circlip assembly process, a carpenter's pliers are often used to manually clamp, compress and install the circlip. When manually operating, an external force is applied to bend the circlip so that the circlip can be smoothly inserted into the circlip groove, which easily causes the circlip to break or be damaged; after the circlip is installed in the circlip groove, the circlip is tightened by a carpenter's pliers, but the tightening effect of the circlip by the carpenter's pliers is not good, and improvement is needed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a shaft circlip installation device with a good tightening effect of the circlip in the circlip groove of the shaft.

[0005] The utility model provides a circlip installation device, which includes an assembly tooling and a tightening tooling. The assembly tooling installs the circlip into the circlip groove of the shaft. The tightening tooling includes a tightening base, an elastic chuck and a pressing head. A seat hole is vertically and penetratingly formed in the tightening base. A through hole is vertically and penetratingly formed in the elastic chuck. A pressing hole is formed on the surface of the pressing head. The size of the seat hole is between the size of the top end and the size of the bottom end of the elastic chuck. The elastic chuck is inserted into the seat hole of the tightening base. The shaft and the circlip are inserted into the through hole of the elastic chuck. The pressing head is sleeved around the shaft and abuts against the top end of the elastic chuck. The pressing head is pressed down so that the elastic chuck tightens the circlip under the action of the tightening base.

[0006] Preferably, the elastic chuck includes a main body part and eight tightening clips. The eight tightening clips are arranged around the top end of the main body part. The through hole vertically penetrates the main body part. The eight tightening clips enclose the through hole.

[0007] Preferably, a contact platform is formed on the inner side wall of the seat hole of the tightening base. The bottom end of the tightening clip abuts against the contact platform.

[0008] Preferably, the top surface of the contact platform is inclined.

[0009] Preferably, a reset block is arranged in the seat hole of the tightening base. The outer surface of the reset block abuts against the inner wall of the abutting table, and the bottom end of the elastic chuck abuts against the top end of the reset block.

[0010] Preferably, a bottom plate is arranged at the bottom end of the tightening base. The reset block abuts on the bottom plate, and the bottom plate and the bottom end of the tightening base are fixed by bolt locking.

[0011] Preferably, a clamping groove is formed on the surface of the base. The bottom end of the tightening base is clamped in the clamping groove, and the outer surface of the tightening base abuts against the inner wall of the clamping groove.

[0012] Preferably, the pressing hole is circular, and the inner wall of the pressing head abuts against the outer surface of the clutch base.

[0013] Preferably, the assembly tooling includes a base, an inverted cone and a sleeve. The shaft is vertically installed on the base. The inverted cone is vertically arranged at the top end of the shaft. The size of the sleeve is slightly larger than the sizes of the shaft and the inverted cone. The sleeve is sleeved around the inverted cone and the shaft, and a snap ring is pressed into the snap ring groove of the shaft.

[0014] Preferably, an installation hole is formed on the surface of the base. One end of the shaft passes through the installation hole. A tapered groove is formed on the top surface of the shaft. The bottom end of the inverted cone is clamped in the tapered groove.

[0015] As can be seen from the above description of the present invention, the present invention has the following beneficial effects:

[0016] 1. The snap ring installed in the snap ring groove is passed through the perforation of the elastic chuck, so that the outer surface of the snap ring abuts against the inner wall of the elastic chuck. By applying an external force, the elastic chuck is contracted, so that the tightening tooling has a good tightening effect on the snap ring.

[0017] 2. A reset block is arranged in the seat hole of the tightening base, so that the bottom end of the elastic chuck abuts against the top end of the reset block. After the elastic chuck completes the tightening of the snap ring, the elastic chuck can return to its original state under the action of the reset block, so as to prepare for the tightening of the next snap ring.

[0018] 3. The inverted cone is passed through the tapered groove at the top end of the shaft, and the sleeve is sleeved around the inverted cone, and the bottom end of the sleeve abuts against the snap ring; by applying an external force, the sleeve is lowered along the inverted cone. By arranging the inverted cone, the lifting and lowering of the sleeve are guided to drive the snap ring to be installed in the installation groove of the shaft. By this installation method, the snap ring can be prevented from being damaged. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the snap ring groove and the tapered groove of the planetary shaft in the embodiment;

[0020] Figure 2 It is a schematic structural diagram of the rotor shaft of the embodiment;

[0021] Figure 3 It is a schematic structural diagram of the assembly tooling of the embodiment;

[0022] Figure 4 It is a schematic structural diagram of the base of the embodiment;

[0023] Figure 5 It is a schematic structural diagram of the inverted cone of the embodiment;

[0024] Figure 6 It is a schematic structural diagram of the sleeve of the embodiment;

[0025] Figure 7 It is an installation schematic diagram of the planetary shaft, sleeve and inverted cone of the embodiment;

[0026] Figure 8 It is a sectional view of the tightening tooling of the embodiment;

[0027] Figure 9 It is a sectional view of the elastic chuck of the embodiment;

[0028] Figure 10 It is a top view of the elastic chuck of the embodiment;

[0029] Figure 11 It is a sectional view of the tightening base of the embodiment;

[0030] Figure 12 It is a sectional view of the pressing head of the embodiment;

[0031] Figure 13 It is a sectional view of the bottom plate of the embodiment.

[0032] Reference numerals: 1, assembly tooling; 11, base; 111, mounting hole; 12, inverted cone; 13, sleeve; 2, tightening tooling; 21, tightening base; 211, seat hole; 212, abutting table; 213, reset block; 22, elastic chuck; 221, perforation; 222, main body part; 223, tightening clip; 23, pressing head; 231, pressing hole; 24, bottom plate; 241, clamping groove; 3, planetary shaft; 31, snap ring groove; 32, tapered groove; 4, base; 5, return spring; 6, retaining ring; 7, snap ring; 8, rotor shaft. Detailed implementation manners

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the following further elaborates on the present utility model in combination with the attached Figures 1-13 drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0034] Reference Figure 1 、 Figure 2 and Figure 3 , a circlip installation device, including an assembly tooling 1 and a tightening tooling 2. The circlip 7 is installed on a shaft through this installation device. The shaft on which the circlip 7 is installed can be a planetary shaft 3 or a rotor shaft 8. A circlip groove 31 is provided on the surface of the planetary shaft 3. The circlip 7 is tightened and fixed in the circlip groove 31 of the planetary shaft 3 by using this circlip installation device. First, the planetary shaft 3 is passed through the clutch base 4 and is threadedly connected to the clutch base 4, and the return spring 5, the retaining ring 6 and the circlip 7 are sleeved on the planetary shaft 3. Subsequently, the assembly tooling 1 is used to move the driving circlip 7 into the circlip groove 31 of the planetary shaft 3, and finally, the tightening tooling 2 is used to tighten the circlip 7 located in the circlip groove 31.

[0035] Reference Figures 1-7 , wherein the assembly tooling 1 includes a base 11, an inverted cone 12 and a sleeve 13. An installation hole 111 is formed on the surface of the base 11. The size of the installation hole 111 matches the size of the planetary shaft 3. One end of the planetary shaft 3 is passed through the installation hole 111 on the surface of the base 11 to keep it in a vertical state. The return spring 5, the retaining ring 6 and the circlip 7 are sleeved on the periphery of the planetary shaft 3. In order to enable the circlip 7 to smoothly move into the circlip groove 31 of the planetary shaft 3; a conical groove 32 is formed at the top of the planetary shaft 3. The inverted cone 12 is clamped in the conical groove 32 at the top of the planetary shaft 3, and the sleeve 13 is sleeved on the periphery of the inverted cone 12 and the planetary shaft 3, so that the bottom end of the sleeve 13 abuts against the circlip 7. Subsequently, pressure is applied to the sleeve 13 manually or by a hand press, so that the sleeve 13 drives the circlip 7 to move into the circlip groove 31 of the planetary shaft 3. The setting of the inverted cone 12 is conducive to the circlip 7 being sleeved on the periphery of the planetary shaft 3.

[0036] Reference Figure 8 、 Figure 9 and Figure 10, in order to tighten the circlip 7 located in the circlip groove 31 of the planetary shaft 3, the circlip 7 can be pre-tightened first using a slip-joint pliers, and then the tightening tooling 2 is used to further tighten the circlip 7. The tightening tooling 2 includes a tightening base 21, an elastic chuck 22 and a pressing head 23. A seat hole 211 is vertically and penetratingly formed in the tightening base 21. The seat hole 211 is circular, and the diameter size of the seat hole 211 is between the diameter size of the top end of the elastic chuck 22 and the diameter size of the bottom end of the elastic chuck 22. The elastic chuck 22 includes a main body portion 222 and eight tightening clips 223. The eight tightening clips 223 are located at the top end of the main body portion 222 and enclose each other. There is a spacing between adjacent two tightening clips 223. A through hole 221 is formed along the vertical direction of the elastic chuck 22, so that the through hole 221 penetrates the main body portion 222, and the eight tightening clips 223 enclose the through hole 221. A pressing hole 231 is formed along the length direction of the pressing head 23. The pressing hole 231 is set to be circular, and the shape size of the pressing hole 231 matches the shape size of the base 4 sleeved on the periphery of the planetary shaft 3.

[0037] Referring to Figure 8 , Figure 11 and Figure 12 , one end of the main body portion 222 of the elastic chuck 22 is clamped into the seat hole 211 of the tightening base 21, so that the surface of each tightening clip 223 abuts against the inner side wall of the seat hole 211 of the tightening seat. The planetary shaft 3 is inserted into the through hole 221 of the elastic chuck 22, and the eight tightening clips 223 enclose the circlip 7 located in the circlip groove 31. The pressing head 23 is sleeved on the periphery of the planetary shaft 3 and the base 4, so that the bottom end of the pressing head 23 abuts against the top surface of the elastic chuck 22, and the outer side surface of the base 4 abuts against the inner side wall of the pressing head 23, so that the base 4 plays a guiding role in the movement of the pressing head 23. Finally, the clutch and the tightening tooling 2 are placed on a hydraulic press. The hydraulic press presses down the pressing head 23, so that the elastic chuck 22 further tightens the circlip 7 under the action of the tightening base 21, and the pressure of the hydraulic press is controlled at 25 kg / cm² to avoid poor tightening effect on the circlip 7 or damage to the circlip 7 during the tightening process.

[0038] In order to further avoid damage to the circlip 7 caused by excessive pressure of the hydraulic press, a contact platform 212 is formed on the inner side wall of the tightening base 21, and the top surface of the contact platform 212 is inclined to match the bottom ends of the tightening clips 223. After the elastic chuck 22 is clamped and inserted into the seat hole 211 of the tightening base 21, the bottom ends of the tightening clips 223 abut against the top surface of the contact platform 212. The setting of the contact platform 212 plays a supporting role for the elastic chuck 22 to prevent the elastic chuck 22 from being completely embedded into the seat hole 211 of the tightening base 21 under the action of the pressing head 23.

[0039] After pressing down the elastic chuck 22 with the indenter 23 so that the circlip 7 is tightened, the clutch and the tightening tooling 2 are removed from the hydraulic press. In order to enable the elastic chuck 22 to automatically reset from the seat hole 211, a reset block 213 is provided in the seat hole 211 of the tightening base 21. The bottom end of the elastic chuck 22 abuts against the top surface of the reset block 213. The reset block 213 is elastic and the reset block 213 undergoes elastic deformation during the process of the indenter 23 pressing down the elastic chuck 22. When the indenter 23 stops pressing down the elastic chuck 22, the elastic chuck 22 gradually moves upward under the action of the reset block 213 to prepare for the tightening of the next circlip 7, improving the tightening efficiency of the circlip 7.

[0040] Referring Figure 9 and Figure 13 , when the clutch and the tightening tooling 2 are removed from the hydraulic press, in order to prevent the reset block 213 from falling off from the seat hole 211 of the tightening base 21, a bottom plate 24 is fixedly provided at the bottom end of the tightening base 21, and the bottom plate 24 and the bottom end of the tightening base 21 are detachably fixedly installed. In order to facilitate the detachable installation between the bottom plate 24 and the tightening base 21, a clamping groove 241 is formed on the surface of the bottom plate 24. The shape and size of the formed clamping groove 241 match the shape and size of the tightening base 21. The bottom end of the tightening base 21 is clamped into the clamping groove 241 of the bottom plate 24, and the bottom plate 24 and the tightening base 21 are fixed by bolt locking; thus, the bottom plate 24 and the tightening base 21 are not only firmly fixed but also have the advantage of being easily disassembled.

[0041] The specific implementation principle of the embodiment of the present application is as follows: When it is necessary to assemble the planetary shaft 3, the base 4, the return spring 5, the snap ring 6, and the circlip 7 in the clutch, the base 4 is sleeved around the planetary shaft 3 and fixedly connected to the planetary shaft 3 by thread. First, the assembly tooling 1 is used to assemble the return spring 5, the snap ring 6, and the circlip 7 on the planetary shaft 3. One end of the planetary shaft 3 is inserted and clamped into the mounting hole 111 of the base 11 so that the planetary shaft 3 is kept in a vertical state. The return spring 5, the snap ring 6, and the circlip 7 are sequentially sleeved around the planetary shaft 3. Subsequently, the inverted cone 12 is clamped into the tapered hole of the planetary shaft 3, and the sleeve 13 is sleeved around the inverted cone 12 and the planetary shaft 3 so that the bottom end of the sleeve 13 abuts against the circlip 7. By manually or using a hand press to press down the sleeve 13, the sleeve 13 moves downward along the inverted cone 12 to drive the circlip 7 to move into the circlip groove 31 of the planetary shaft 3.

[0042] After assembling the circlip 7 into the circlip groove 31 of the planetary shaft 3, the circlip 7 can be preliminarily tightened using a slip-joint pliers. Subsequently, the planetary shaft 3 is removed, and the planetary shaft 3 is reversely inserted through the perforation 221 of the collet 22, and the collet 22 is snap-fitted into the seat hole 211 of the tightening base 21, so that the circlip 7 located in the circlip groove 31 is enclosed between the tightening clips 223 of the collet 22. The pressure head 23 is sleeved around the planetary shaft 3 and the base 4, so that the bottom end of the pressure head 23 abuts against the top surface of the collet 22. Finally, the clutch and the tightening tooling 2 are placed on the oil pressure table, the pressure of the hydraulic press is controlled at 25 kg / cm², and the pressure head 23 drives the collet 22 to move downward under the action of the downward pressure of the oil pressure table. The tightening clips 223 at the upper end of the collet 22 re-tighten the circlip 7 under the action of the tightening base 21. After the circlip 7 is tightened in the circlip groove 31, the clutch and the tightening tooling 2 are removed from the oil pressure table, and the collet 22 gradually rises and returns to its original state under the action of the reset block 213, so as to facilitate the tightening of the next circlip 7.

[0043] The above has described the present utility model in an exemplary manner with reference to the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A retaining spring installation device, characterized in that: It includes an assembly tool and a tightening tool. The assembly tool installs the retaining ring into the retaining ring groove of the shaft. The tightening tool includes a tightening base, an elastic chuck and a pressing head. The tightening base is vertically penetrated to form a seat hole, the elastic chuck is vertically penetrated to form a through hole, and the surface of the pressing head is formed with a pressing hole; The size of the seat hole is between the size of the top end and the size of the bottom end of the elastic clamp, the elastic clamp is inserted into the seat hole of the tightening base, the shaft and the retaining ring are inserted into the through hole of the elastic clamp, the pressing head is sleeved on the periphery of the shaft and abuts against the top end of the elastic clamp, and the pressing head is pressed down so that the elastic clamp tightens the retaining ring under the action of the tightening base.

2. A retaining spring installation device according to claim 1, characterized in that: The elastic clamp comprises a main body and eight tightening clips, wherein the eight tightening clips are arranged around the top of the main body, the through hole vertically penetrates the main body, and the eight tightening clips enclose the through hole.

3. A retaining spring installation device according to claim 2, characterized in that: An abutment platform is formed along the inner side wall of the seat hole of the tightening base, and the bottom end of the tightening clip abuts on the abutment platform.

4. A retaining spring installation device according to claim 3, characterized in that: The top end surface of the abutment platform is arranged to be inclined.

5. A retaining spring installation device according to claim 3, characterized in that: A reset block is arranged in the seat hole of the tightening base, the outer surface of the reset block abuts against the inner wall of the abutment platform, and the bottom end of the elastic clamp abuts against the top end of the reset block.

6. A retaining spring installation device according to claim 5, characterized in that: A bottom plate is arranged at the bottom end of the tightening base, the reset block is seated on the bottom plate, and the bottom plate and the bottom end of the tightening base are fixed by bolts.

7. A retaining spring installation device according to claim 6, characterized in that: The surface of the base is provided with an embedding groove, the bottom end of the tightening base is embedded in the embedding groove, and the outer surface of the tightening base is in contact with the inner side wall of the embedding groove.

8. A retaining spring installation device according to claim 1, characterized in that: The pressure hole is arranged in a circular shape, and the inner side wall of the pressure head abuts against the outer side surface of the clutch base.

9. A retaining spring installation device according to claim 1, characterized in that: The assembly tool includes a base, an inverted cone and a sleeve. The shaft is vertically installed on the base, the inverted cone is vertically arranged at the top of the shaft, the size of the sleeve is slightly larger than the size of the shaft and the inverted cone, the sleeve is sleeved on the periphery of the inverted cone and the shaft, and the retaining ring is pressed into the retaining ring groove of the shaft.

10. A retaining spring installation device according to claim 9, characterized in that: A mounting hole is provided on the surface of the base, one end of the shaft is inserted into the mounting hole, a conical groove is formed on the top surface of the shaft, and the bottom end of the inverted cone is embedded in the conical groove.

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