Improved structure of ratchet wrench head and driving device thereof

Abstract

The utility model relates to a ratchet wrench head and drive device improvement structure, its application pivoted in a control handle, including a tool head seat, a drive group and a transmission group, wherein the drive group is equipped with the drive umbrella tooth post, and the transmission group is equipped with the hollow umbrella tooth disc of relative engagement transmission, and the drive group and transmission group contain in the tool head seat, make its running speed can be freely prepared, and the transmission group is equipped with the transmission hollow front ratchet post and transmission hollow rear ratchet fixed ring of mutual engagement, to carry out clockwise fixed point rotation and counterclockwise stop control, increase structural operation intensity and durability, to reach structural durability, structural stability and use functionality.

Description

Technical Field

[0001] This utility model relates to an improved structure of a ratchet wrench head and its driving device, and more particularly to a structure applied to the driving and linkage of tool heads. Background Technology

[0002] The current ratchet wrench head structure is as follows: Figure 9 As shown, it includes a ratchet wrench head assembly 50, which has a clamping seat 51 and a drive head 52. The clamping seat 51 has an integrally formed connecting handle 510 and a perforated clamping head 511. The connecting handle 510 is hollow and communicates with the bottom side of the clamping head 511. A rocking drive shaft 510A is inserted into the connecting handle 510. A drive ball 510B is eccentrically sleeved on the end side of the rocking drive shaft 510A. A ratchet-toothed swing collar 511A is clamped between the perforated clamping heads 511. Below the swing collar 511A, there is an open ball groove 511B. The driving ball 510B of the swing drive shaft 510A slides against the open ball groove 511B of the swing collar 511A. The drive head 52 is provided with a drive head body 520 and a lateral ratchet block 521. The lateral ratchet block 521 has several locking ratchet teeth 521A on both sides. The lateral ratchet block 521 is pivotally connected to the side of the drive head body 520. The drive head 52 is rotatably fixed to the perforated clamp head of the clamp 51. A ratchet-hole swing collar 511A is clamped between 511 and 511. The lateral ratchet block 521 of the drive head 52 engages with the ratchet inside the ratchet-hole swing collar 511A. By actuating the rocking drive shaft 510A, the drive ball 510B on the end of the rocking drive shaft 510A rotates eccentrically, causing the ratchet-hole swing collar 511A to swing left and right, and intermittently engage with the lateral ratchet block 521 on the side of the drive head 52, forming a fixed-point rotation lock of the drive head 52. However, the operation of the rocking drive shaft 510A relative to the ratchet-hole swing collar 511A is still present. Due to the angle limitation, the ratchet hole swing collar 511A only partially engages with the lateral ratchet block 521, resulting in poor overall operational stability and safety. Furthermore, the output speed of the drive head 52 is limited. If the speed of the drive head 52 is increased, it will cause overheating of the swing collar 511A relative to the drive shaft 510A. In addition, the ratchet wrench head assembly 50 has an open structure, so the outer side of the clamp 51 cannot be insulated. This makes the ratchet wrench head assembly 50 unusable as a maintenance tool for electric vehicles. Therefore, improvements are necessary. Utility Model Content

[0003] In view of the shortcomings in the structural durability, structural stability and functionality of existing ratchet wrench head structures, this utility model presents an improved structure for the ratchet wrench head and its driving device.

[0004] The main objective of this utility model is to provide an improved structure for a ratchet wrench head and its driving device, which is pivotally connected to a control handle. It includes a tool head base, a driving assembly, and a transmission assembly. The tool head base integrally comprises an upper transmission seat and a lower driving seat. The upper transmission seat has a through-type front opening, a transmission internal cavity, and a rear opening. The rear opening has an inner surface of an annular rim, and several positioning protrusions are arranged around the inner edge of the inner surface of the annular rim. The lower driving seat is hollow and has a driving internal cavity that communicates with the transmission internal cavity. The driving assembly includes a driving bevel gear column, several driving bearings, and a hollow fixed plate. The driving bevel gear column integrally comprises a vertical driving bevel gear disc and a driving shaft. The driving shaft is sleeved on several driving bearings, allowing the driving shaft to rotate relative to the driving bearings. The hollow fixed plate is fixed and abutted against the area below the driving bearings.The transmission assembly includes a front transmission component and a rear fixing component. The front transmission component includes a screwdriver head, a front sealing perforated ring, a transmission hollow bevel gear disc, a transmission hollow front ratchet post, and a retaining and fixing ring. The screwdriver head has a limiting groove on its side, and the front sealing perforated ring has a positioning and fixing ring groove on its inner side. The transmission hollow bevel gear disc is integrally formed with a fitting hollow column body and a horizontally driven hollow bevel gear disc. The end face of the transmission hollow front ratchet post has a front ratchet portion, and the side of the transmission hollow front ratchet post has a limiting member perforation through which a limiting member passes. The aforementioned screwdriver head passes through the transmission hollow front ratchet post, and the screwdriver head... The limiting groove on the screwdriver head, relative to the limiting member through the hole in the hollow front ratchet post of the drive mechanism, allows the screwdriver head to slide forward and backward within the hollow front ratchet post. The hollow column of the hollow bevel gear disc is fitted and fixed in the positioning and fixing ring groove of the front cover through-hole ring, allowing the hollow bevel gear disc to rotate relative to the drive mechanism. The hollow front ratchet post is fixed inside the hollow bevel gear disc and secured with a retaining ring fitted onto it. This retaining ring abuts against the end face of the hollow bevel gear disc for fixation. The rear fixing assembly includes a hollow rear ratchet fixing ring, a rear cover through-hole ring, and a retaining spring. The hollow rear ratchet retaining ring of the transmission has a rear ratchet portion on one end face, and several positioning slots are spaced around the hollow rear ratchet retaining ring. The supporting spring is in a supporting compression and elastic push-back state, and is located between the hollow rear ratchet retaining ring and the rear cover through-hole ring. The screwdriver head of the front transmission assembly passes through the hollow rear ratchet retaining ring, the supporting spring, and the rear cover through-hole ring. The transmission assembly is housed in the upper transmission seat of the tool head holder. The front cover through-hole ring of the front transmission assembly is fixed to the front opening of the upper transmission seat, and the rear cover through-hole ring of the rear retaining assembly is fixed to the rear opening of the upper transmission seat, so that the transmission of the front transmission assembly... The front ratchet teeth of the hollow front ratchet column mesh with the rear ratchet teeth of the hollow rear ratchet fixing ring of the rear fixing assembly. Due to the retaining spring of the rear fixing assembly, clockwise elastic skipping rotation and counter-clockwise stop control are achieved. The drive assembly is housed in the lower drive seat of the tool head, and the hollow fixing plate of the drive assembly is fixed to the inner wall of the drive compartment cavity in the lower drive seat. The vertical drive bevel gear of the drive assembly meshes with the horizontal drive bevel gear of the front transmission assembly of the transmission group. The drive bevel gear of the drive assembly is selectively linked to the control handle locking mechanism.

[0005] In a preferred embodiment, the drive housing cavity of the lower drive seat of the tool head has a positioning and receiving section on the end side inward. Below the positioning and receiving section is a stepped annular groove. After the drive bevel gear column of the vertical drive assembly is fitted with several drive bearings, it is housed in the positioning and receiving section. The hollow fixed plate is fixedly housed in the stepped annular groove to position the drive bearings, thereby increasing the stability of the structure and improving the multiple utilities of this utility model.

[0006] In a preferred embodiment, the drive shaft end face of the drive bevel gear of the vertical drive assembly is provided with a positioning and fixing hole, which is fixed to the drive end of the control handle, thereby increasing the convenience of structural application and enhancing the multiple utilitarianities of this utility model.

[0007] In a preferred embodiment, the positioning and fixing hole of the drive shaft column is set in the form of a square opening, a hexagonal opening, or a star-shaped opening to increase the convenience of structural application and enhance the multiple utilitarianities of this utility model.

[0008] In a preferred embodiment, the front ratchet portion on the end face of the hollow front ratchet post and the rear ratchet portion on the end face of the hollow rear ratchet fixing ring are arranged at a negative angle with the front of the ratchet higher than the rear, which increases the relative meshing force between the front and rear ratchet portions and increases the meshing strength due to the increased meshing area between the front and rear ratchet portions, thereby enhancing the multiple utilitarianities of this utility model.

[0009] In a preferred embodiment, a locking groove is provided on the inner surface of the rear opening of the upper transmission seat near the outer edge, and the transmission assembly is further provided with an elastic fixing piece. After the transmission assembly is housed in the transmission content cavity of the upper transmission seat, the elastic fixing piece is elastically locked in the locking groove, so that the transmission assembly is held and fixed in the transmission content cavity by the elastic fixing piece, thereby increasing the stability of the assembly and improving the multiple utilities of this utility model.

[0010] In a preferred embodiment, the tool head is provided with an insulating surface layer, which enables it to be used as a tool for electric vehicle repair, increasing its versatility and enhancing the multiple utilities of this invention.

[0011] By means of a pivoting control handle, which can be a manual tool control handle, a power tool control handle, or a pneumatic tool control handle, the tool headstock, a drive assembly, and a transmission assembly are provided. The drive assembly is provided with a drive bevel gear column, and the transmission assembly is provided with a hollow bevel gear disc that meshes with each other for transmission. The drive assembly and the transmission assembly are housed in the tool headstock, allowing their operating speed to be freely configured. The transmission assembly is provided with a meshing hollow front ratchet column and a hollow rear ratchet retaining ring for clockwise fixed-point rotation and counterclockwise stop control, increasing the structural strength and durability, thereby achieving structural durability, structural stability, and functionality. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional combined schematic diagram of the improved structure of the ratchet wrench head and its driving device of this utility model.

[0014] Figure 2 This is a three-dimensional exploded view of the improved structure of the ratchet wrench head and its driving device of this utility model.

[0015] Figure 3 This is a cross-sectional view of the improved structure of the ratchet wrench head and its drive device of this utility model.

[0016] Figure 4 The diagram shows the clockwise and counterclockwise rotation states of the improved structure of the ratchet wrench head and its drive device of this utility model.

[0017] Figure 5 The diagram shows the assembly of the improved ratchet wrench head and its drive mechanism of this utility model in the use state of a manually driven tool.

[0018] Figure 6 This is a reference diagram showing the assembly of the improved structure of the ratchet wrench head and its drive device of this utility model in the use state of an electric drive tool.

[0019] Figure 7 This is a reference diagram showing the assembly of the improved structure of the ratchet wrench head and its drive device of this utility model in the use state of a pneumatically driven tool.

[0020] Figure 8 This is a reference diagram showing an embodiment of the improved structure of the ratchet wrench head and its driving device of this utility model, in which the tool head base is provided with an insulating outer cover.

[0021] Figure 9 This is a reference diagram showing the cross-sectional view of the ratchet wrench head structure in the prior art, which is an improved structure of the ratchet wrench head and its driving device according to the present invention.

[0022] Among them, 10 is the tool head seat; 11 is the upper transmission seat; 110 is the front opening; 111 is the transmission internal cavity; 112 is the rear opening; 113 is the inner surface of the ring edge; 113A is the positioning protrusion; 113B is the locking concave ring groove; 12 is the lower drive seat; 120 is the drive internal cavity; 121 is the positioning and accommodating section; 122 is the stepped ring groove; 13 is the insulating surface layer; 20 is the drive assembly; 21 is the drive bevel gear column; 210 is the vertical drive bevel gear disc; 211 is the drive shaft column; 211A is the positioning and fixing hole; 22 is the drive bearing; 23 is the hollow fixing disc; 30 is the transmission assembly; 31 is the front transmission assembly; 310 is the screwdriver head; 310A is the limiting groove; 311 is the front cover through-hole ring; 311A ​​is the positioning and fixing ring groove; 312 is the transmission hollow bevel gear disc; 312A is the fitting hollow column body; 312B is the horizontal drive hollow bevel gear disc. ; 313 Hollow front ratchet post in transmission; 313A Front ratchet part; 313B Perforated limiter; 313C Limiter; 314 Holding and fixing ring; 32 Rear fixing assembly; 320 Hollow rear ratchet fixing ring in transmission; 320A Rear ratchet part; 320B Positioning slot; 321 Perforated ring of rear cover; 322 Holding spring; 33 Elastic fixing piece; 40 Control handle; 41 Manual tool control handle; 42 Power tool control handle; 43 Pneumatic tool control handle; 50 Ratchet wrench head assembly; 51 Clamp; 510 Connecting handle; 510A Shaking drive shaft; 510B Drive ball; 511 Perforated clamp head; 511A Ratchet hole swing collar; 511B Opening ball groove; 52 Drive head; 520 Drive head body; 521 Lateral ratchet block; 521A Locking ratchet. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] To further understand the structure, features and other objectives of this utility model, the preferred embodiments are described in detail below with accompanying drawings. However, the embodiments illustrated in these drawings are for illustrative purposes only and are not the sole limitation of the patent application.

[0025] Please refer to the following: Figures 1 to 4The diagram shows the three-dimensional assembly, three-dimensional disassembled state, cross-sectional state, and clockwise and counterclockwise rotation states of the improved structure of the ratchet wrench head and its driving device of this utility model. It is pivotally connected to a control handle 40 and includes:

[0026] A tool head seat 10 is integrally provided with an upper transmission seat 11 and a lower drive seat 12. The upper transmission seat 11 is provided with a front opening 110, a transmission content cavity 111 and a rear opening 112 in a through shape from front to back. The rear opening 112 is provided with an inner surface 113 of an annular rim, and a number of positioning protrusions 113A are provided around the inner edge of the inner surface 113. The lower drive seat 12 is hollow and is provided with a drive content cavity 120, which is in communication with the transmission content cavity 111.

[0027] A drive assembly 20 includes a drive bevel gear column 21, a number of drive bearings 22, and a hollow fixed disk 23. The drive bevel gear column 21 integrally comprises a vertical drive bevel gear disk 210 and a drive shaft 211. The drive shaft 211 is sleeved on the number of drive bearings 22, allowing it to rotate relative to the drive bearings 22. The hollow fixed disk 23 is fixed and abuts against the area around the lower part of the drive bearings 22.

[0028] A transmission assembly 30 is provided, which includes a front transmission component 31 and a rear fixing component 32. The front transmission component 31 includes a screwdriver head 310, a front sealing perforated ring 311, a transmission hollow bevel gear disc 312, a transmission hollow front ratchet post 313, and a retaining and fixing ring 314. The screwdriver head 310 has a limiting groove 310A on its side, and the front sealing perforated ring 311 has a positioning and fixing ring groove 311A ​​on its inner side. The transmission hollow bevel gear disc 312 is integrally provided with a fitting hollow post body 312A and a horizontally driven hollow bevel gear disc 314. 2B, and the end face of the hollow front ratchet post 313 of the transmission is provided with a front ratchet portion 313A. The hollow front ratchet post 313 of the transmission has a limiting member through hole 313B on its side, and a limiting member 313C passes through the limiting member through hole 313B. The aforementioned screwdriver head 310 passes through the hollow front ratchet post 313 of the transmission. The limiting groove 310A provided on the screwdriver head 310, relative to the limiting member 313C provided on the limiting member through hole 313B of the hollow front ratchet post 313 of the transmission, allows the screwdriver head 310 to be slidably limited forward and backward within the hollow front ratchet post 313 of the transmission. Adjustments are made to ensure that the hollow bevel gear disc 312 and its fitted hollow column 312A are fitted and fixed in the positioning and fixing ring groove 311A ​​of the front cover perforated ring 311, allowing the hollow bevel gear disc 312 to rotate relative to the positioning and fixing ring groove 311A. The hollow front ratchet column 313 is inserted and fixed inside the hollow bevel gear disc 312, and a retaining and fixing ring 314 is fitted onto the hollow front ratchet column 313. The retaining and fixing ring 314 abuts against the end face of the hollow bevel gear disc 312 for fixation. Additionally, the rear fixing assembly 32 is provided with a hollow rear ratchet. The drive assembly 320 includes a fixed ring 320, a rear cover perforated ring 321, and a retaining spring 322. The drive assembly 320 has a rear ratchet portion 320A on one end face, and a number of positioning slots 320B are spaced around the drive assembly 320. The retaining spring 322 is in a retaining compression and elastic push-back state and is located between the drive assembly 320 and the rear cover perforated ring 321. The screwdriver head 310 of the front drive assembly 31 passes through the drive assembly 320, the retaining spring 322, and the rear cover perforated ring 321.

[0029] The transmission assembly 30 is housed in the upper transmission seat 11 of the tool head seat 10. The front cover perforated ring 311 of the front transmission assembly 31 is fixed to the front opening 110 of the upper transmission seat 11, and the rear cover perforated ring 321 of the rear fixing assembly 32 is fixed to the rear opening 112 of the upper transmission seat 11. This allows the front ratchet portion 313A of the hollow front ratchet post 313 of the front transmission assembly 31 to mesh with the rear ratchet portion 320A of the hollow rear ratchet fixing ring 320 of the rear fixing assembly 32. The rear fixing assembly 32 is supported by a retaining spring 322. The drive assembly 20 is housed in the lower drive seat 12 of the tool head 10. The hollow fixed plate 23 of the drive assembly 20 is fixed against the inner wall of the drive content cavity 120 of the lower drive seat 12. The vertical drive bevel gear plate 210 of the drive bevel gear column 21 of the drive assembly 20 is engaged with the horizontal drive hollow bevel gear plate 312B of the transmission hollow bevel gear plate 312 of the front transmission assembly 31 of the transmission assembly 30. The drive bevel gear column 21 of the drive assembly 20 is selectively engaged with the control handle 40.

[0030] The improved structure of the ratchet wrench head and its driving device of this utility model is achieved through the combination of the above structures.

[0031] Please refer to the following: Figures 1 to 7 The diagram shows the three-dimensional assembly, three-dimensional disassembled state, cross-sectional state, clockwise and counterclockwise rotation states, and the state of assembly with a manual drive tool, an electric drive tool, and a pneumatic drive tool, all based on the improved structure of the ratchet wrench head and its drive device of this utility model. It is pivotally connected to a control handle 40, which can be a manual tool control handle 41, an electric tool control handle 42, or a pneumatic tool control handle 43. The control handle 40 includes a tool head base 10, a drive assembly 20, and a... The transmission assembly 30 includes a drive bevel gear column 21 provided by the drive assembly 20, and a hollow bevel gear disc 312 that meshes with each other for transmission. The drive assembly 20 and the transmission assembly 30 are housed in the tool head holder 10, allowing their operating speed to be freely configured. The transmission assembly 30 also includes a hollow front ratchet column 313 and a hollow rear ratchet retaining ring 320 that mesh with each other for clockwise fixed-point rotation and counterclockwise stop control, increasing the structural strength and durability, thereby achieving structural durability, structural stability and functionality.

[0032] Please refer to the following: Figures 1 to 3The diagram shows the three-dimensional assembly, three-dimensional exploded, and cross-sectional views of the improved structure of the ratchet wrench head and its driving device of this utility model. In a preferred embodiment, the driving content cavity 120 of the lower driving seat 12 of the tool head seat 10 has a positioning and receiving section 121 located inward from the end side. A stepped annular groove 122 is provided below the positioning and receiving section 121. The driving bevel gear column 21 of the vertical driving assembly 20 is fitted with several driving bearings 22 and then housed in the positioning and receiving section 121. The hollow fixed plate 23 is fixedly housed in the stepped annular groove 122 to position the driving bearings 22, thereby increasing the stability of the structure and enhancing the multiple utilitarianities of this utility model.

[0033] Please refer to the following: Figures 1 to 3 The diagram shows the three-dimensional assembly, three-dimensional exploded, and cross-sectional views of the improved structure of the ratchet wrench head and its driving device of this utility model. In a preferred embodiment, the end face of the drive shaft column 211 of the drive bevel gear column 21 of the vertical drive assembly 20 is provided with a positioning and fixing hole 211A, which is fixed to the drive end of the control handle 40, increasing the convenience of the structure and enhancing the multiple utilities of this utility model.

[0034] Please refer to the following: Figures 1 to 3 As shown in the reference diagrams, the improved structure of the ratchet wrench head and its driving device of this utility model is presented in three-dimensional assembly, three-dimensional exploded state and cross-sectional state. In a preferred embodiment, the positioning and fixing hole 211A of the driving shaft column 211 is set in the form of a square opening, a hexagonal opening or a star-shaped opening (not shown in the figure), which increases the convenience of structural application and enhances the multiple utilitarianities of this utility model.

[0035] Please refer to the following: Figures 1 to 3 The diagram shows the three-dimensional assembly, three-dimensional exploded, and cross-sectional views of the improved structure of the ratchet wrench head and its driving device of this utility model. In a preferred embodiment, the front ratchet portion 313A on the end face of the hollow front ratchet post 313 and the rear ratchet portion 320A on the end face of the hollow rear ratchet fixing ring 320 are arranged at a negative angle with the front of the ratchet higher than the rear, which increases the relative meshing force between the front ratchet portion 313A and the rear ratchet portion 320A. The increased meshing area between the front ratchet portion 313A and the rear ratchet portion 320A also increases the meshing strength, thereby enhancing the multiple utilitarianities of this utility model.

[0036] Please refer to the following: Figures 1 to 3The diagram shows the three-dimensional assembly, three-dimensional exploded, and cross-sectional views of the improved structure of the ratchet wrench head and its driving device of this utility model. In a preferred embodiment, a locking groove 113B is provided around the outer edge of the inner surface 113 of the rear opening 112 of the upper transmission seat 11. The transmission assembly 30 is further provided with an elastic fixing piece 33. After the transmission assembly 30 is housed in the transmission content cavity 111 of the upper transmission seat 11, the elastic fixing piece 33 is elastically locked in the locking groove 113B, so that the transmission assembly 30 is held and fixed in the transmission content cavity 111 by the elastic fixing piece 33, which increases the stability of the assembly and enhances the multiple utilitarianities of this utility model.

[0037] Please refer to the following: Figure 8 The diagram shows an embodiment of the improved structure of the ratchet wrench head and its drive device of this utility model. The tool head base is provided with an insulating outer cover. In a preferred embodiment, the tool head base 10 is provided with an insulating surface layer 13, which enables it to be used as a tool for electric vehicle repair, increasing its versatility and enhancing the multiple utilities of this utility model.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An improved structure for the driving device of a ratchet wrench head, characterized in that, include: A drive assembly, comprising a drive bevel gear column, a number of drive bearings, and a hollow fixed disk. The drive bevel gear column integrally comprises a vertical drive bevel gear disk and a drive shaft column. The drive shaft column is sleeved on the number of drive bearings, allowing the drive shaft column to rotate relative to the drive bearings. The hollow fixed disk is fixed and supported around the lower part of the drive bearings. A transmission assembly includes a front transmission component and a rear fixing component. The front transmission component includes a screwdriver head, a hollow bevel gear disc, a hollow front ratchet post, and a retaining ring. The screwdriver head has a limiting groove on its side. The hollow bevel gear disc is integrally formed with a fitting hollow column and a horizontally driven hollow bevel gear. The end face of the hollow front ratchet post has a front ratchet tooth portion, and the side of the hollow front ratchet post has a limiting member through hole, through which a limiting member passes. The aforementioned screwdriver head passes through the hollow front ratchet post. The limiting groove on the screwdriver head, relative to the limiting member through hole on the hollow front ratchet post, allows the screwdriver head to slide forward and backward within the hollow front ratchet post for adjustable positioning. The fitting hollow column of the hollow bevel gear disc... The positioning and fixing ring groove of the front cover perforated ring is fitted and fixed, so that the hollow bevel gear disk of the transmission is rotatable. The hollow front ratchet post of the transmission is fixed inside the hollow bevel gear disk of the transmission and is fitted with a retaining fixing ring. The retaining fixing ring abuts against the end face of the hollow bevel gear disk of the transmission for fixation. The rear fixing component is provided with a hollow rear ratchet fixing ring of the transmission, a rear cover perforated ring and a retaining spring. A rear ratchet part is provided on one end face of the hollow rear ratchet fixing ring of the transmission, and a number of positioning slots are spaced around the hollow rear ratchet fixing ring of the transmission. The retaining spring is in a retaining compression and elastic push state and is provided between the hollow rear ratchet fixing ring of the transmission and the rear cover perforated ring. The screwdriver head of the front transmission component passes through the hollow rear ratchet fixing ring of the transmission, the retaining spring and the rear cover perforated ring. The front ratchet of the hollow front ratchet column of the front transmission assembly meshes with the rear ratchet of the hollow rear ratchet fixing ring of the rear fixing assembly. Due to the support spring of the rear fixing assembly, clockwise elastic skipping tooth meshing rotation and counterclockwise stop control are performed. In addition, the vertical drive bevel gear of the drive bevel gear column of the drive group meshes and moves with the horizontal drive hollow bevel gear of the drive hollow bevel gear of the front transmission assembly of the transmission group.

2. The improved structure of the ratchet wrench head driving device according to claim 1, characterized in that, The positioning and fixing holes of the drive shaft column are set in the form of square openings, hexagonal openings, or star-shaped openings.

3. The improved structure of the ratchet wrench head drive device according to claim 1, characterized in that, The front ratchet portion on the end face of the hollow front ratchet post in the transmission, and the rear ratchet portion on the end face of the hollow rear ratchet fixing ring in the transmission, are set at a negative angle with the ratchet being higher in the front and lower in the rear.

4. An improved ratchet wrench head structure, which is pivotally connected to a control handle, characterized in that, include: A tool head base, wherein the tool head base is integrally provided with an upper transmission seat and a lower drive seat. The upper transmission seat is provided with a front opening, a transmission content cavity and a rear opening in a through shape from front to back. The rear opening is provided with an inner surface of an annular rim, and a number of positioning protrusions are provided around the inner edge of the inner surface of the annular rim. The lower drive seat is hollow and is provided with a drive content cavity, which is in communication with the transmission content cavity. A drive assembly, comprising a drive bevel gear column, a number of drive bearings, and a hollow fixed disk. The drive bevel gear column integrally comprises a vertical drive bevel gear disk and a drive shaft column. The drive shaft column is sleeved on the number of drive bearings, allowing the drive shaft column to rotate relative to the drive bearings. The hollow fixed disk is fixed and supported around the lower part of the drive bearings. A transmission assembly includes a front transmission component and a rear fixing component. The front transmission component includes a screwdriver head, a front sealing perforated ring, a transmission hollow bevel gear, a transmission hollow front ratchet post, and a retaining and fixing ring. The screwdriver head has a limiting groove on its side, and the front sealing perforated ring has a positioning and fixing ring groove on its inner side. The transmission hollow bevel gear is integrally formed with a fitting hollow column body and a horizontally driven hollow bevel gear. The end face of the transmission hollow front ratchet post has a front ratchet portion, and the transmission hollow front ratchet post has a limiting member perforation on its side. A limiting member passes through the limiting member perforation. The aforementioned screwdriver head passes through the transmission hollow front ratchet post, and the limiting groove on the screwdriver head, relative to the limiting member in the limiting member perforation of the transmission hollow front ratchet post, allows the screwdriver head to be adjusted and limited to slide forward and backward within the transmission hollow front ratchet post. The hollow column of the transmission hollow bevel gear disc is fitted and fixed in the positioning and fixing ring groove of the front cover perforated ring, so that the transmission hollow bevel gear disc is rotatable. The transmission hollow front ratchet column is inserted and fixed inside the transmission hollow bevel gear disc, and is fitted with a retaining fixing ring. The retaining fixing ring abuts against the end face of the transmission hollow bevel gear disc for fixation. The rear fixing assembly is provided with a transmission hollow rear ratchet fixing ring, a rear cover perforated ring and a retaining spring. The transmission hollow rear ratchet fixing ring has a rear ratchet part on one end face, and a number of positioning slots are spaced around the transmission hollow rear ratchet fixing ring. The retaining spring is in a retaining compression and elastic push state and is located between the transmission hollow rear ratchet fixing ring and the rear cover perforated ring. The screwdriver head of the front transmission assembly passes through the transmission hollow rear ratchet fixing ring, the retaining spring and the rear cover perforated ring. The transmission assembly is housed in the upper transmission seat of the tool head, and the front cover perforated ring of the front transmission assembly is fixed to the front opening of the upper transmission seat. The rear cover perforated ring of the rear fixing assembly is fixed to the rear opening of the upper transmission seat, so that the front ratchet of the hollow front ratchet column of the front transmission assembly meshes with the rear ratchet of the hollow rear ratchet fixing ring of the rear fixing assembly. Due to the abutment spring of the rear fixing assembly, clockwise elastic skipping tooth meshing rotation and counterclockwise stop control are performed. The drive assembly is housed in the lower drive seat of the tool head, and the hollow fixing plate of the drive assembly is abutted and fixed to the inner wall of the drive inner cavity of the lower drive seat. The vertical drive bevel gear of the drive bevel gear column of the drive assembly meshes and moves with the horizontal drive hollow bevel gear of the transmission hollow bevel gear of the front transmission assembly. The drive bevel gear of the drive assembly is selectively linked with the control handle locking mechanism.

5. The improved ratchet wrench head structure according to claim 4, characterized in that, The drive housing cavity of the lower drive seat of the tool head has a positioning and receiving section on the end side inward. A stepped ring groove is provided below the positioning and receiving section. After the drive bevel gear column of the vertical drive assembly is fitted with several bearings, it is housed in the positioning and receiving section. The hollow fixed plate is fixedly housed in the stepped ring groove to position and fix the bearings.

6. The improved ratchet wrench head structure according to claim 5, characterized in that, The drive shaft of the vertical drive assembly has a positioning and fixing hole at its end, which is fixed to the drive end of the control grip.

7. The improved ratchet wrench head structure according to claim 6, characterized in that, The positioning and fixing holes of the drive shaft column are set in the form of square openings, hexagonal openings, or star-shaped openings.

8. The improved ratchet wrench head structure according to claim 7, characterized in that, The front ratchet portion on the end face of the hollow front ratchet post in the transmission, and the rear ratchet portion on the end face of the hollow rear ratchet fixing ring in the transmission, are set at a negative angle with the ratchet being higher in the front and lower in the rear.

9. The improved ratchet wrench head structure according to claim 4, characterized in that, The inner surface of the annular rim of the rear opening of the upper transmission seat is provided with a locking groove near the outer edge. The transmission assembly is further provided with an elastic fixing piece. After the transmission assembly is housed in the transmission content cavity of the upper transmission seat, the elastic fixing piece is elastically locked in the locking groove, so that the transmission assembly is held and fixed in the transmission content cavity by the elastic fixing piece.

10. The improved ratchet wrench head structure according to any one of claims 4 to 9, characterized in that, The tool head base has an insulating surface layer.

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