CN116221301A - A sliding clutch assembly and clutch pressing method - Google Patents

Abstract

This application relates to the field of vehicle parts, in particular to a slip clutch assembly and a clutch pressing method, which includes a casing, a mandrel and an elastic assembly, the mandrel is installed in the casing through a certain press-fitting device, and on the casing An output shaft is provided, the shell is connected to the transmission system through the output shaft, and the mandrel is connected to the power system. When the mandrel is elastically connected to the shell through an elastic assembly; the elastic assembly includes a spring cap and a spring, and the core The peripheral side wall of the shaft is provided with a placement groove for placing the elastic component, the spring is located between the spring cap and the inner wall of the placement groove, and the spring, the spring cap and the inner wall of the placement groove all abut against each other; The inner wall is provided with a mounting groove for placing the elastic component. The application has the effect that the transmission system is not easily damaged due to overload when the input torque is too large.

Description

A sliding clutch assembly and clutch pressing method

technical field

The present application relates to the field of vehicle components, in particular to a sliding clutch assembly and a clutch pressing method.

Background technique

The clutch is installed between the power system and the transmission system, and is an assembly directly connected with the engine in the automobile transmission system.

In the related art, the clutch includes a housing and a mandrel, the mandrel is installed in the housing through a certain press-fitting device, the housing and the mandrel are relatively stationary, the housing and the mandrel are rigidly connected, the housing and the transmission system are connected to each other, and the mandrel Interconnect with power system. When the clutch works, the power system transmits the torque to the mandrel, the mandrel rotates accordingly, and the casing rotates synchronously with the mandrel; when the torque transmitted by the power system to the mandrel exceeds the rated torque, the mandrel needs to rotate relative to the shell, That is, the clutch will occur, otherwise the transmission system will easily receive excessive torque and be overloaded and damaged.

Contents of the invention

In order to prevent the transmission system from being easily damaged due to overload when the input torque is too large, the present application provides a sliding clutch assembly.

In the first aspect, the present application provides a slip clutch assembly and a clutch pressing method. The slip clutch assembly provided by the present application adopts the following technical solutions:

A slip clutch assembly, including a shell, a mandrel and an elastic component, the mandrel is installed in the shell through a certain press-fitting device, the shell is provided with an output shaft, the shell is connected to the transmission system through the output shaft, the mandrel and the power The systems are connected to each other, and the mandrel is elastically connected to the shell through the elastic assembly; the elastic assembly includes a spring cap and a spring, and a placement groove for the elastic assembly is opened on the peripheral side wall of the mandrel, and the spring is located at between the spring cap and the inner wall of the placement groove, and the spring, the spring cap, and the inner wall of the placement groove all abut each other; Butt against each other.

By adopting the above technical scheme, when the torque transmitted by the power system to the mandrel does not exceed the rated torque, the spring cap and the inner wall of the installation groove are in contact with each other, and the shell rotates synchronously with the mandrel; when the torque transmitted by the power system to the mandrel exceeds At rated torque, with the rotation of the mandrel, the force exerted by the mandrel on the spring exceeds the force exerted by the spring cap on the inner wall of the installation groove, so that the spring cap is separated from the shell, that is, the mandrel rotates relative to the shell, and the torque on the mandrel is not easy It is transmitted to the transmission system through the casing, and the transmission system is not easily damaged due to overload.

Optionally, the spring includes a first spring body and a second spring body, the size of the first spring body is larger than that of the second spring body, and the first spring body is sleeved on the second spring body.

By adopting the above technical scheme, the torque transmitted by a single spring is limited, and the torque transmitted by the power system through the mandrel requires more springs, but the number of placement slots on the mandrel is limited, that is, the number of springs accommodated is limited. By placing each placement slot The springs inside are divided into the first spring body and the second spring body of different sizes and are nested together, so that the number of springs in each placement slot increases without occupying more space, which is convenient for sharing the torque transmitted by the mandrel .

Optionally, a tapered groove is opened in the placing groove.

By adopting the above technical scheme, when the spring and the spring cap are placed in the placement groove, the spring can enter the placement groove along the tapered groove, so that the spring and the spring cap are conveniently placed in the placement groove.

Optionally, a relief slot is provided on the inner wall of the housing near the end of the output shaft.

By adopting the above technical solution, when the output shaft is assembled into the housing, the output shaft is facilitated to slide in the housing, so that the output shaft is flexible relative to the housing and is not easily damaged.

Optionally, a plurality of grease nipples are also included, and a plurality of oil injection holes for installing the grease nipples are opened on the peripheral side wall of the housing, and the oil injection holes communicate with the inner space of the housing.

By adopting the above technical solution, when the mandrel rotates relative to the housing, the grease nipple injects lubricating oil into the housing through the oil injection hole, reducing the friction between the mandrel and the housing, and facilitating the rotation of the mandrel relative to the housing.

Optionally, a sealing ring is also included, and an installation groove is provided on the inner wall of the housing at an end away from the output shaft; when the mandrel is assembled into the housing, the installation groove is far away from the output shaft relative to the placement groove, so The sealing ring is located in the installation groove.

By adopting the above technical scheme, when the mandrel is assembled to the shell, the sealing ring seals the gap between the mandrel and the shell, so that external impurities are not easy to enter the gap between the mandrel and the shell, and the gap between the mandrel and the shell is improved. The tightness between.

Optionally, it also includes a plurality of inner circlips and a plurality of limit rings, and the inner walls of the axial ends of the housing are provided with installation slots for the inner circlips to be clamped; when the mandrel is assembled into the housing , the inner circlip abuts against the peripheral side wall of the mandrel, and the limit ring is used for axially limiting the mandrel.

By adopting the above technical scheme, when the mandrel is assembled into the shell, the inner circlip and the peripheral side wall of the mandrel abut against each other, and the inner circlip and the limit ring cooperate with each other to position the mandrel axially and improve the mandrel. Accuracy of shaft installation.

Optionally, a limit ring groove is provided on the limit ring close to the output shaft, and the limit ring groove is farther away from the output shaft than the limit ring; when the mandrel is assembled into the housing, the limit ring groove The bottom wall of the bit ring groove abuts against the end surface of the core shaft close to the output shaft.

By adopting the above technical solution, the mandrel is radially positioned.

Optionally, reinforcing ribs are provided on the sealing ring.

By adopting the above technical solution, the structural strength of the sealing ring is improved.

In the second aspect, the present application also discloses a clutch press-fitting method, which is applied to a sliding clutch assembly, including the following steps:

S1. Assemble the shell: place the output shaft, inner circlip and left limit ring in sequence in the shell, and then place the shell on the base;

S2. Positioning the shell: place the guiding device on the top of the shell, and locate the assembly position of the mandrel in the shell;

S3. Assembling the mandrel: placing a plurality of assembled elastic components in corresponding placement grooves on the side wall around the mandrel;

S4. Press-fitting: Guide the assembled mandrel through the guide device, press-fit the mandrel with the press-fitting device, and assemble the mandrel into the shell;

S5. Completion of assembly: Place the right limit ring, inner circlip and sealing ring in the shell in sequence.

By adopting the above-mentioned technical scheme, the close fitting installation of the mandrel shaft and the output shaft is realized.

In summary, the present application includes at least one of the following beneficial technical effects:

1. Through the setting of the elastic component, when the torque transmitted by the power system to the mandrel does not exceed the rated torque, the spring cap and the inner wall of the installation groove are in contact with each other, and the shell rotates synchronously with the mandrel; when the torque transmitted by the power system to the mandrel When the torque exceeds the rated torque, with the rotation of the mandrel, the force exerted by the mandrel on the spring exceeds the force exerted by the spring cap on the inner wall of the installation groove, so that the spring cap is separated from the shell, that is, the mandrel rotates relative to the shell, and the force on the mandrel The torque is not easily transmitted to the transmission system through the casing, and the transmission system is not easily damaged by overload;

2. Through the setting of the first spring body and the second spring body, the torque transmitted by a single spring is limited, and the torque transmitted by the power system through the mandrel requires more springs, but the number of placement slots on the mandrel is limited, that is, the number of springs accommodated The number is limited. By dividing the springs in each placement slot into first spring bodies and second spring bodies of different sizes and nesting them together, the number of springs in each placement slot increases without occupying more space. The space is convenient for sharing the torque transmitted by the mandrel.

Description of drawings

Fig. 1 is a schematic view showing the positional relationship between the guide device and the press-fitting device during press-fitting of the slip clutch assembly in the embodiment of the present application.

Fig. 2 is a schematic diagram of the overall structure of a slip clutch assembly according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram for illustrating a mandrel and an elastic component in an embodiment of the present application.

FIG. 4 is a schematic structural diagram for illustrating a housing in an embodiment of the present application.

Fig. 5 is a schematic structural diagram for showing the inner hole of the mandrel in the embodiment of the present application.

Fig. 6 is a schematic structural diagram for illustrating a spring in an embodiment of the present application.

Fig. 7 is a schematic diagram showing the positional relationship of the inner circlip, the limit ring and the sealing ring after hiding the outer shell in the embodiment of the present application.

Fig. 8 is a schematic structural diagram for showing reinforcing ribs in the embodiment of the present application.

FIG. 9 is a schematic structural diagram for illustrating a shock absorbing groove in an embodiment of the present application.

Fig. 10 is a schematic structural diagram for showing the left limiting ring in the embodiment of the present application.

Fig. 11 is a schematic structural diagram for illustrating the guide sleeve in the embodiment of the present application.

Fig. 12 is a schematic structural diagram for showing connection fillets in the embodiment of the present application.

FIG. 13 is a schematic structural diagram for illustrating a press-fitting device in an embodiment of the present application.

Description of reference signs: 1, shell; 11, shell flange; 12, output shaft; 13, installation groove; 14, oil injection hole; 141, grease nipple; 15, installation groove; 151, limit platform; Installation card slot; 17, give way slot; 2, mandrel; 21, placement slot; 211, tapered slot; 22, sealing ring; 221, reinforcing rib; 222, damping groove; 23, inner hole; One hole; 232, the second hole; 24, the installation step; 3, the elastic component; 31, the spring cap; 32, the spring; 321, the first spring body; 322, the second spring body; 4, the pressing device; 41, Positioning column; 411, mounting column; 412, protective cover; 413, limit cover; 42, gland; 421, fixed groove; 422, installation block; 5, inner retaining spring; 6, limit ring; 61, left limit 611, limit ring groove; 62, right limit ring; 7, base; 8, guide sleeve; 81, connection section; 811, positioning groove; 82, first guide wall; 821, guide ring; 83, The second guide wall; 84, the connection fillet; 85, the guide groove; 851, the orientation groove; 9, the press.

Detailed ways

The present application will be described in further detail below in conjunction with accompanying drawings 1-13.

In the first aspect, the embodiment of the present application discloses a sliding clutch assembly. Referring to Figure 1, Figure 2 and Figure 3, the slip clutch assembly includes a housing 1, a mandrel 2 and an elastic assembly 3, the mandrel 2 is assembled in the housing 1 through a press fitting device 4, the mandrel 2 is connected to the power system, and the housing One end in the height direction is integrally formed with a shell flange 11, and the end of the shell 1 close to the shell flange 11 is equipped with an output shaft 12. The diameter of the inner hole of the housing flange 11 is smaller than the inner diameter of the housing 1. When the output shaft 12 is assembled into the housing 1, the housing flange 11 radially restricts the output shaft 12, so that the output shaft 12 is not easy to dislodge from the housing 1. drop, which improves the stability of the assembly of the output shaft 12. The casing 1 is connected with the transmission system through the output shaft 12 , the power system transmits the torque to the casing 1 through the mandrel 2 , and the casing 1 transmits the torque to the transmission system through the output shaft 12 . The mandrel 2 is elastically connected to the shell 1 through the elastic component 3 .

When the torque output by the power system through the mandrel 2 does not exceed the rated torque, the force exerted by the mandrel 2 on the elastic component 3 does not exceed the elastic force of the elastic component 3, the mandrel 2 rotates synchronously with the shell 1, and the mandrel 2 transfers the torque to the shell 1 stable output. When the torque output by the power system through the mandrel 2 exceeds the rated torque, the force exerted by the mandrel 2 on the elastic component 3 exceeds the elastic force of the elastic component 3, so that the mandrel 2 is separated from the shell 1, and the mandrel 2 is relatively When the casing 1 rotates, the mandrel 2 cannot transmit the torque to the casing 1, so that the transmission system is not easy to receive excessive torque and overload, and the transmission system is not easy to be damaged due to overload.

Referring to Fig. 3, Fig. 4 and Fig. 5, the peripheral side wall of the mandrel 2 is provided with a plurality of placing grooves 21 for placing the elastic components 3, and the inner wall of the housing 1 is provided with mounting grooves 13 for placing the elastic components 3, the mounting grooves 13 runs through both ends of the housing 1 in the height direction of the housing 1 , and the installation groove 13 communicates with the placement groove 21 . A tapered groove 211 is opened in the placing groove 21 . The plurality of placement slots 21 are symmetrical about the central axis of the mandrel 2 and are evenly distributed along the height direction of the mandrel 2 . In this embodiment, there are sixteen placement grooves 21, and the number of elastic components 3 corresponds to the number of placement grooves 21. The placement grooves 21 are divided into eight groups along the peripheral side wall of the mandrel 2, and each group includes two. The actual situation The number of placement grooves 21 can be set as required, and the number of installation grooves 13 corresponds to the number of groups of placement grooves 21. Each elastic assembly 3 includes a spring cap 31 and a set of springs 32 , the spring 32 is located between the spring cap 31 and the inner wall of the placement groove 21 , and the spring 32 abuts against the spring cap 31 and the inner wall of the placement groove 21 . At the same time, the spring cap 31 abuts against the inner wall of the mounting groove, and the shape of the spring cap 31 is designed according to the rated torque.

When the torque received by the mandrel 2 does not exceed the rated torque, the height of the top of the spring cap 31 is higher than the peripheral sidewall of the mandrel 2 , and the spring cap 31 is always in contact with the housing 1 . The spring 32 shrinks, the spring cap 31 has elastic force on the inner wall of the shell 1, and the mandrel 2 and the shell 1 rotate synchronously. When the torque received by the mandrel 2 exceeds the rated torque, the force exerted by the mandrel 2 on the spring cap 31 exceeds the elastic force of the spring cap 31, and the spring cap 31 no longer abuts against the inner wall of the shell 1, so that the mandrel 2 and the shell 1 They are no longer connected, and the mandrel 2 rotates relative to the shell 1, so that the mandrel 2 cannot transmit torque to the shell 1, and then the shell 1 no longer transmits torque to the transmission system through the output shaft 12, and the transmission system is not easy to be caused by excessive torque. And overload, finally make the transmission system not easy to damage due to overload.

With reference to Fig. 3, Fig. 5 and Fig. 6, every group of spring 32 all comprises a first spring body 321 and a second spring body 322, and the size of the first spring body 321 is greater than the size of the second spring body 322, and the first spring body 321 is sheathed on the second spring body 322 . The torque transmitted by a single spring 32 is limited, and the torque transmitted by the power system through the mandrel 2 requires more springs 32, but the number of placement slots 21 on the mandrel 2 is limited, that is, the number of springs 32 accommodated is limited. The spring 32 in the 21 is divided into a first spring body 321 and a second spring body 322 of different sizes and is nested together, so that the number of springs 32 in each placement groove 21 is increased without occupying more space, which is convenient Share the torque transmitted by the mandrel 2.

Referring to FIG. 2 and FIG. 4 , four oil injection holes 14 are opened on the peripheral side wall of the housing 1 , and the four oil injection holes 14 are evenly distributed about the axis of the housing 1 . The oil injection hole 14 communicates with the inner space of the housing 1 , and a grease fitting 141 is correspondingly installed in the oil injection hole 14 . When the mandrel 2 rotates in the shell 1, the grease nipple 141 injects lubricating oil into the gap between the mandrel 2 and the shell 1 through the oil injection hole 14, which reduces the friction between the mandrel 2 and the shell 1, and facilitates the mandrel. 2 rotates relative to housing 1,

Referring to Fig. 4, Fig. 7 and Fig. 8, when the mandrel 2 is assembled into the housing 1, the end of the mandrel 2 away from the output shaft 12 is sleeved with a sealing ring 22, and the inner wall of the end of the housing 1 away from the housing flange 11 is provided with a There is a mounting groove 15 and a limiter 151 is formed. When the mandrel 2 is assembled into the housing 1, the mounting groove 15 is far away from the housing flange 11 relative to the placement groove 21, and the sealing ring 22 is clamped in the mounting groove 15 . The sealing ring 22 seals the gap between the mandrel 2 and the shell 1 , making it difficult for external impurities to enter the gap between the mandrel 2 and the shell 1 , and improves the sealing performance between the mandrel 2 and the shell 1 . A plurality of reinforcing ribs 221 are fixedly connected to the side wall on one side of the sealing ring 22 in the thickness direction, which improves the structural strength of the sealing ring 22 .

Referring to Fig. 9, the other side of the sealing ring 22 in the thickness direction is provided with a shock absorbing groove 222, and the shock absorbing groove 222 is farther away from the shell flange 11 than the reinforcing rib 221, so that the connection between the sealing ring 22 and the mandrel 2 is tighter. Give it room to deform.

Referring to Fig. 4, Fig. 7 and Fig. 10, the slip clutch assembly also includes two inner circlips 5 and two limit rings 6, and the inner walls of both axial ends of the casing 1 are provided with mounting clips for the inner circlips 5 to be clamped. Groove 16; when the mandrel 2 is assembled into the shell 1, the inner circlip 5 abuts against the peripheral side wall of the mandrel 2, and the inner circlip 5 is farther away from the placement groove 21 on the mandrel 2 than the limit ring 6. The limit ring 6 is located at both ends of the mandrel 2 in the height direction, and the end faces of the limit ring 6 abut against the end faces of the two ends of the mandrel 2 in the height direction. The limit ring 6 close to the output shaft 12 is the left limit ring 61, the limit ring 6 away from the output shaft 12 is the right limit ring 62, and the limit ring groove 611 is opened on the left limit ring 61, and the limit ring groove 611 Located on the side of the left limiting ring 61 away from the output shaft 12 ; the bottom wall of the limiting ring groove 611 abuts against the end surface of the mandrel 2 close to the output shaft 12 . The axial and radial positioning of the mandrel 2 is carried out through the mutual cooperation of the inner circlip 5 , the limit ring 6 and the limit ring groove 611 , which improves the installation accuracy of the mandrel 2 in the housing 1 . A relief slot 17 is defined on the inner wall of the housing 1 near the end of the output shaft 12 . In this embodiment, the width of the relief groove 17 is set to 4.3 mm. When the output shaft 12 is assembled into the housing 1 , there can be room for sliding relative to the housing 1 , even though the output shaft 12 is flexible relative to the housing 1 , so that the output shaft 12 is not easily damaged.

The implementation principle of a sliding clutch assembly in the embodiment of the present application is: when the torque transmitted by the power system to the mandrel 2 does not exceed the rated torque, the height of the top of the spring cap 31 is higher than the peripheral side wall of the mandrel 2, and the spring 32 contracts. , the spring cap 31 exerts force on the inner wall of the installation groove 13, the spring cap 31 is always in contact with the inner wall of the installation groove 13 of the housing 1, the force exerted by the mandrel 2 on the spring cap 31 does not exceed the elastic force of the spring cap 31, the mandrel 2 and the housing 1 synchronous rotation. When the torque received by the mandrel 2 exceeds the rated torque, the force exerted by the mandrel 2 on the spring cap 31 exceeds the elastic force of the spring cap 31, and the spring cap 31 no longer abuts against the inner wall of the installation groove 13, that is, the mandrel 2 and the shell 1 They are no longer connected, and the mandrel 2 rotates relative to the shell 1, so that the mandrel 2 cannot transmit torque to the shell 1, and then the shell 1 no longer transmits torque to the transmission system through the output shaft 12, and the transmission system is not easy to be caused by excessive torque. And overload, finally make the transmission system not easy to damage due to overload.

In the second aspect, the embodiment of the present application also discloses a clutch press-fitting method. Clutch press-fitting method The press-fitting method is applied to the assembly of the sliding clutch assembly, including the following steps:

S1. Assemble the shell 1: first place the shell 1 on the base 7, the shell flange 11 is closer to the base 7 than the shell 1, and then put the output shaft 12 from the shell 1 away from the end of the shell flange 11 into the shell 1 , and the narrower end of the output shaft 12 passes through the housing flange 11 , and the housing flange 11 limits the wider end of the output shaft 12 to the housing 1 . And set the output shaft 12 at a distance of 4.3mm compared to the housing flange 11, that is, the length of the relief groove 17, so that the output shaft 12 can slide relative to the housing 1, and then the inner retaining spring 5 and the left limiter The position rings 61 are sequentially placed at corresponding positions in the housing 1 .

S2. Positioning the shell 1: place the guiding device on the top of the shell 1, referring to Figure 4, Figure 10 and Figure 11, the guiding device is the guide sleeve 8, the guide sleeve 8 communicates with the shell 1, and the guide sleeve 8 is close to the end of the shell 1 For the connection section 81, two positioning grooves 811 are provided on the peripheral side wall of the connection section 81. When the guide sleeve 8 is installed on the casing 1, the connection section 81 is inserted into the casing 1, and the inner wall of the positioning groove 811 is aligned with the casing 1. end faces abut each other. When the connecting section 81 is located in the casing 1 , the end surface of the connecting section 81 close to one end of the casing 1 abuts against the limiting platform 151 on the inner wall of the casing 1 .

S3. Assembling the mandrel 2: Assemble a plurality of spring caps 31, first spring bodies 321 and second spring bodies 322 one by one, and then place a plurality of assembled elastic components 3 on the side walls of the mandrel 2 to correspond to each other. placed in the groove 21.

S4, press-fitting: Referring to Figure 4, Figure 11 and Figure 12, the inner wall of the guide sleeve 8 includes a first guide wall 82 and a second guide wall 83 integrally formed, and the first guide wall 82 and the second guide wall 83 are formed along the guide sleeve. 8 are arranged side by side in the height direction, and the first guide wall 82 is farther away from the housing 1 than the second guide wall 83 . The first guide wall 82 is tapered along the height direction of the guide sleeve 8 , and the end of the first guide wall 82 away from the housing 1 is farther from the central axis of the guide sleeve 8 than the end of the first guide wall 82 close to the housing 1 . The second guide wall 83 is flush with the inner wall of the housing 1, so that the force exerted by the spring cap 31 on the mandrel 2 on the inner wall of the mounting groove 13 remains maximum, thereby increasing the upper limit of the clutch between the mandrel 2 and the housing 1, further improving the service life of the transmission system. A connection fillet 84 is integrally formed at the joint between the first guide wall 82 and the second guide wall 83 .

Referring to FIG. 3 and FIG. 11 , the inner wall of the guide sleeve 8 is provided with a plurality of guide grooves 85 , and the number of the guide grooves 85 corresponds to the number of the spring caps 31 on the mandrel 2 . The guide groove 85 communicates with the corresponding mounting groove 13 on the inner wall of the housing 1 , the guide groove 85 runs through both ends of the guide sleeve 8 along the height direction of the guide sleeve 8 , and the guide groove 85 is matched with the spring cap 31 . An orientation groove 851 is formed on the inner wall of each guide groove 85 at the end away from the housing 1 , and the orientation groove 851 runs through the end surface of the guide sleeve at the end away from the housing 1 . The end of the first guide wall 82 away from the housing 1 is integrally formed with a guide ring 821, the guide ring 821 is arranged coaxially with the guide sleeve, and the guide ring 821 is tapered along the direction from the first guide wall 82 to the second guide wall 83. The opening size of the end of the ring 821 close to the shell 1 is smaller than the opening size of the end of the guide ring 821 away from the shell 1 .

Before the mandrel 2 is press-fitted, grease the inner wall of the guide sleeve 8, and the assembled mandrel 2 enters the first guide wall 82 in the guide sleeve 8 along the guide ring 821, and makes each spring cap 31 It is locked in the corresponding guide groove 85 .

Referring to FIG. 1 , FIG. 5 and FIG. 13 , the mandrel 2 is then press-fitted using the press-fit device 4 . First assemble the press-fitting device 4, which includes a positioning post 41 and a gland 42. In order to meet the needs of the positioning post 41 for processing according to the inner hole 23 of the mandrel 2, the positioning post 41 and the gland 42 are detachably connected. The area of the section of the gland 42 is larger than the area of the section of the positioning column 41 , and the gland 42 protects the positioning column 41 during press-fitting. The end surface of the gland 42 close to the positioning column 41 is provided with a fixing groove 421. The end of the positioning column 41 close to the indenter is integrally formed with a mounting column 411. The mounting column 411 is coaxially arranged with the positioning column 41. The mounting column 411 extends into the fixing groove 421. And it is threadedly connected with the side wall of the fixing groove 421 . A mounting block 422 is integrally formed on the end surface of the gland 42 close to the end of the pressure head. The mounting block 422 is cylindrical and is not easy to damage the staff. The mounting block 422 is arranged coaxially with the gland 42, and the area of the section of the mounting block 422 is smaller than the area of the end face of the gland 42, which is convenient for taking. The end of the positioning column 41 away from the mandrel 2 is integrally formed with a protective sleeve 412 , and the protective sleeve 412 is arranged coaxially with the positioning column 41 . When the mounting post 411 is installed in the fixing groove 421 , the end surface of the protective cover 412 and the gland 42 close to the end of the positioning post 41 abut against each other. The gland 42 is picked up by the mounting block 422 , the mounting column 411 on the positioning column 41 is inserted into the fixing groove 421 and tightened, and the end surface of the protective sleeve 412 and the gland 42 abut against each other.

Referring to FIG. 2 , FIG. 5 and FIG. 13 , then the inner hole 23 of the mandrel 2 is positioned through the positioning column 41 . The inner hole 23 of the mandrel 2 comprises a first hole 231 and a second hole 232 which communicate with each other, the first hole 231 is arranged in a circle, the second hole 232 is arranged in a hexagon, and the side walls of the second hole 232 form six The polygon is inscribed in the circle formed by the side wall of the first hole 231 , and a mounting step 24 is formed where the first hole 231 and the second hole 232 communicate with each other. The first hole 231 of the mandrel 2 is farther away from the housing 1 than the second hole 232 . One end of the positioning column 41 close to the mandrel 2 is integrally formed with a limiting sleeve 413 , and the limiting sleeve 413 is arranged coaxially with the positioning column 41 .

Extend one end of the positioning post 41 into the first hole 231 and abut against the end face of the installation step 24, and at the same time, the peripheral side wall of the positioning post 41 is attached to the inner wall of the mandrel 2, and the end face of the spacer sleeve 413 is in contact with the core. The end surfaces at one end in the height direction of the shaft 2 are in contact with each other. Then the pressure head on the press 9 is aligned with the mounting block 422 on the gland 42, the press 9 is started, and the mandrel 2 is pressed, so that a plurality of spring caps 31 are gradually moved toward the placement groove along the first guide wall 82. 21, then enter the second guide wall 83 along the connecting fillet 84, and then enter the shell 1 while keeping in contact with the inner wall of the installation groove 13, until it is assembled to the designated position in the shell 1, at this time the spring cap 31 and the shell 1 The inner walls of the inner mounting groove 13 abut against each other.

S5. Completing the assembly: place the right limit ring 62 , the inner retaining ring 5 and the sealing ring 22 in corresponding positions in the housing 1 in sequence.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims (10)

1. The utility model provides a slip clutch assembly, includes shell (1) and dabber (2), and dabber (2) are installed in shell (1) through certain pressure equipment device (4), are provided with output shaft (12) on shell (1), and shell (1) are through output shaft (12) and transmission system interconnect, dabber (2) and driving system interconnect, its characterized in that: the elastic connection between the mandrel (2) and the shell (1) is realized through the elastic component (3); the elastic component (3) comprises a spring cap (31) and a spring (32), a placing groove (21) for placing the elastic component (3) is formed in the peripheral side wall of the mandrel (2), the spring (32) is positioned between the spring cap (31) and the inner wall of the placing groove (21), and the spring (32) is in mutual abutting connection with the spring cap (31) and the inner wall of the placing groove (21); the inner wall of the shell (1) is provided with a mounting groove (13) for placing the elastic component (3), and the spring cap (31) is mutually abutted with the inner wall of the mounting groove (13).

2. A slip clutch assembly as set forth in claim 1 wherein: the spring (32) comprises a first spring body (321) and a second spring body (322), the size of the first spring body (321) is larger than that of the second spring body (322), and the first spring body (321) is sleeved on the second spring body (322).

3. A slip clutch assembly as set forth in claim 1 wherein: a conical groove (211) is formed in the placing groove (21).

4. A slip clutch assembly as set forth in claim 1 wherein: an abdication groove (17) is formed in the inner wall of one end, close to the output shaft (12), of the shell (1).

5. A slip clutch assembly as set forth in claim 1 wherein: the novel grease nipple is characterized by further comprising a plurality of grease nipples (141), wherein a plurality of grease filling holes (14) for mounting the grease nipples (141) are formed in the peripheral side wall of the shell (1), and the grease filling holes (14) are communicated with the inner space of the shell (1).

6. A slip clutch assembly as set forth in claim 1 wherein: the device also comprises a sealing ring (22), wherein an installation groove (15) is formed in the inner wall of one end, far away from the output shaft (12), of the shell (1); when the mandrel (2) is assembled into the housing (1), the mounting groove (15) is far away from the output shaft (12) relative to the placement groove (21), and the sealing ring (22) is positioned in the mounting groove (15).

7. A slip clutch assembly as set forth in claim 1 wherein: the device also comprises a plurality of inner clamping springs (5) and a plurality of limit rings (6), wherein the inner walls of the two axial ends of the shell (1) are provided with mounting clamping grooves (16) for clamping the inner clamping springs (5); when the mandrel (2) is assembled into the shell (1), the inner clamping spring (5) is abutted against the peripheral side wall of the mandrel (2), and the limiting ring (6) is used for axially limiting the mandrel (2).

8. A slip clutch assembly as set forth in claim 7 wherein: a limit ring groove (611) is formed in the limit ring (6) close to the output shaft (12), and the limit ring groove (611) is far away from the output shaft (12) compared with the limit ring (6); when the mandrel (2) is assembled into the shell (1), the bottom wall of the limit ring groove (611) is abutted with the end face, close to the output shaft (12), of the mandrel (2).

9. A slip clutch assembly as described in claim 6 wherein: and the sealing ring (22) is provided with a reinforcing rib (221).

10. A method of clutch press-fitting for use in a slip clutch assembly as claimed in any one of claims 1 to 9, wherein: the method comprises the following steps:

s1, assembling a shell (1): the output shaft (12), the inner clamping spring (5) and the limit ring (6) are sequentially arranged in the shell (1), and then the shell (1) is arranged on the base (7);

s2, positioning shell (1): the guiding device is arranged above the shell (1) and positions the assembly position of the inner mandrel (2) of the shell (1);

s3, assembling a mandrel (2): respectively placing a plurality of assembled elastic components (3) in corresponding placing grooves (21) on the peripheral side wall of the mandrel (2);

s4, press fitting: guiding the assembled mandrel (2) through a guiding device, and using a press-fitting device (4) to press-fit the mandrel (2) so that the mandrel (2) is assembled into the shell (1);

s5, finishing assembly: the limit ring (6), the inner clamping spring (5) and the sealing ring (22) are sequentially arranged in the shell (1).

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