Improved structure of the reversible ratchet head and its drive device
Patent Information
- Application Number
- DE202025101335
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2025-09-11
- Estimated Expiration
- 2035-03-31
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Field of the invention
[0001] The present invention relates to an improved structure of the reversible ratchet head and its drive device, which are particularly applied in the technical field of the drive and connection structure of tool heads. State of the art
[0002] Currently, the conventional ratchet head structure is as shown in Fig. 9 shown. It comprises a reversible ratchet head group 50 equipped with a clamping seat 51 and a drive head 52, wherein the clamping seat 51 has a connecting handle 510 and a clamping head 511 having a through-hole formed integrally therewith, the connecting handle 510 being hollow and connected to the inner lower portion of the clamping head 511, a pivot drive shaft 510A is housed in the connecting handle 510, an eccentric drive ball 510B is arranged at one end of the pivot drive shaft 510A, a toothed pivot ring 511A is clamped by the through-hole clamping head 511, a ball receiving opening 511B is arranged below the toothed pivot ring 511A, and the drive ball 510B of the pivot drive shaft 510A is slidably mounted on the ball receiving opening 511B of the toothed pivot ring 511A. is present,wherein the drive head 52 is further provided with a drive head body 520 and a side ratchet block 521, the side ratchet block 521 is provided on two sides with a plurality of engaging ratchet teeth 521A, the side ratchet block 521 is pivotally connected to the sides of the drive head body 520, the drive head 52 is rotatably mounted in the toothed pivot ring 511A clamped by the clamp head 511 of the clamp seat 51 having a through hole, and the side ratchet block 521 of the drive head 52 is engageable with the ratchet teeth located in the toothed pivot ring 511A. Due to the pivoting movement of the pivot drive shaft 510A, the drive ball 510B located at the end of the pivot drive shaft 510A is rotated eccentrically, whereby the toothed pivot ring 511A is driven so that it can pivot left and right and intermittently engage with the side ratchet block 521 of the drive head 52,to achieve engagement of the drive head 52 with a fixed-point rotation. However, there is an angular restriction in the movement of the pivot drive shaft 510A relative to the toothed pivot ring 511A, so that the toothed pivot ring 511A can only partially engage the side ratchet block 521, which compromises the stability and safety of the overall operation. Furthermore, the output speed of the drive head 52 is limited. Increasing the speed of the drive head 52 leads to overheating between the pivot drive shaft 510A and the toothed pivot ring 511A. Since the reversible ratchet head assembly 50 has an open structure, the clamp seat 51 cannot be covered with an insulating layer, so the reversible ratchet head assembly 50 cannot be used as a maintainable and repairable tool for electric vehicles. Therefore, there is a need to improve this structure. Object of the invention
[0003] In view of the problems of the conventional ratchet head structure in terms of structural durability, structural stability and insufficient functionality, the present invention provides an improved structure of the ratchet head and its drive device.
[0004] The main object of the present invention is to provide an improved structure of the reversible ratchet head and its drive device, which is designed to be rotatably connectable to an operating handle and comprises a tool head seat, a drive group, and a transmission group, wherein the tool head seat has an upper gear seat portion and a lower drive seat portion formed integrally therewith, wherein a front opening, an inner gear receiving chamber, and a rear opening extend from front to rear through the upper gear seat portion, the rear opening is provided with an annular inner surface, a plurality of positioning projections are arranged near the inner edge of the annular inner surface,the lower drive seat portion is hollow and has an inner drive receiving chamber, and the inner drive receiving chamber is continuously connected to the inner gear receiving chamber; wherein the drive group comprises a drive bevel gear shaft, a plurality of drive bearings, and a hollow mounting disc, wherein the drive bevel gear shaft is provided integrally with a vertical drive bevel gear disc and a drive shaft, and the drive shaft is inserted into the plurality of drive bearings so as to be rotatable relative to the drive bearings, wherein the hollow mounting disc abuts and is fixed to the lower drive bearing; wherein the transmission group comprises a front transmission assembly and a rear mounting assembly, wherein the front transmission assembly is provided with a screwdriver bit, a front ring cover, a hollow transmission bevel gear disc, a front hollow transmission ratchet shaft, and a mounting / mounting ring,the screwdriver bit is provided laterally with a limiting recess, a positioning fastening ring groove is provided on the inside of the front ring cover, the hollow transmission bevel gear disc has a hollow engagement shaft and a hollow horizontal drive bevel gear disc formed integrally therewith, the end surface of the front hollow transmission ratchet shaft is provided with a front ratchet portion, the front hollow transmission ratchet shaft is laterally provided with a limiting bore, a limiting piece is inserted into the limiting bore, and the screwdriver bit is inserted through the front hollow transmission ratchet shaft, wherein the limiting recess of the screwdriver bit is arranged relative to the limiting piece of the limiting bore of the front hollow transmission ratchet shaft,that the screwdriver bit for limit adjustment is slidable forwards and backwards in the front hollow transmission ratchet shaft, wherein the hollow engagement shaft of the hollow transmission bevel gear disk engages with the positioning fastening ring groove of the front ring cover, so that the hollow transmission bevel gear disk is rotatable relative to the positioning fastening ring groove, wherein the front hollow transmission ratchet shaft is inserted through the hollow transmission bevel gear disk, the abutment / fastening ring is slipped onto the front hollow transmission ratchet shaft and abuts against the end surface of the hollow transmission bevel gear disk for fastening, wherein the rear fastening assembly further comprises a rear hollow transmission ratchet fastening ring, a rear ring cover, and a retaining spring, a lateral end surface of the rear hollow transmission ratchet fastening ring is provided with a rear ratchet portion,a plurality of spaced-apart positioning notches are provided on the circumference of the rear hollow transmission ratchet fixing ring, the retaining spring is in an abutting, compressed, and elastically recoverable state between the rear hollow transmission ratchet fixing ring and the rear ring cover, and the screwdriver bit of the front transmission assembly is inserted through the rear hollow transmission ratchet fixing ring, the retaining spring, and the rear ring cover; wherein the transmission group is housed in the upper gear seat portion of the tool head seat, the front ring cover of the front transmission assembly is fixed to the front opening of the upper gear seat portion, and the rear ring cover of the rear fixing assembly is fixed to the rear opening of the upper gear seat portion.such that the front ratchet portion of the front hollow transmission ratchet shaft of the front transmission assembly is engaged with the rear ratchet portion of the rear hollow transmission ratchet fixing ring of the rear fixing assembly, wherein the retaining spring of the rear fixing assembly enables control by clockwise rotation, in which engagement is effected by jumping from tooth to tooth, and by counterclockwise rotation, stopping is effected, wherein the drive group is housed in the lower drive seat portion of the tool head seat, the hollow fixing disk of the drive group abuts the inner wall of the inner drive receiving chamber of the lower drive seat portion,the vertical drive bevel gear disc of the drive bevel gear shaft of the drive group engages and moves with the hollow horizontal drive bevel gear disc of the hollow transmission bevel gear disc of the front transmission assembly of the transmission group, and the drive bevel gear shaft of the drive group is engageable with the operating handle.
[0005] In a preferred embodiment, one end of the inner drive receiving chamber of the lower drive seat portion of the tool head seat is provided with an inwardly directed positioning and receiving segment, with a stepped annular recess provided below the positioning and receiving segment. After a plurality of drive bearings are vertically mounted on the drive bevel gear shaft of the drive assembly, they are housed in the positioning and receiving segment. The hollow retaining washer is housed in the stepped annular recess to position the drive bearings, thus improving the stability of the structure during use and the versatility of the present invention.
[0006] In a preferred embodiment, the end surface of the drive shaft of the drive bevel gear shaft of the vertical drive group is provided with a positioning fixing hole, wherein the positioning fixing hole is fixed to the drive end of the operating handle in order to improve the convenience in using the structure and the versatility of the present invention.
[0007] In a preferred embodiment, the positioning mounting hole of the drive shaft is designed in the shape of a square, hexagonal or star-shaped hole in order to improve the convenience in using the structure and the versatility of the present invention.
[0008] In a preferred embodiment, the front ratchet portion provided on the end surface of the front hollow transmission ratchet shaft and the rear ratchet portion provided on the end surface of the rear hollow transmission ratchet fixing ring have their ratchet teeth arranged at a negative angle with a slanted shape that is high at the front and low at the rear to increase the relative engagement force between the front ratchet portion and the rear ratchet portion. By increasing the engagement area between the front ratchet portion and the rear ratchet portion, the engagement strength can be increased to enhance the versatility of the present invention.
[0009] In a preferred embodiment, a locking ring groove is provided near the outer edge of the inner ring surface of the rear opening of the upper gear seat portion, and the transmission assembly is further equipped with an elastic fastening piece. After the transmission assembly is housed in the inner gear receiving chamber of the upper gear seat portion, the elastic fastening piece elastically engages the locking ring groove, so that the transmission assembly is held by the elastic fastening piece and housed in the inner gear receiving chamber, thus enhancing the versatility of the present invention.
[0010] In a preferred embodiment, the tool head seat is covered by an insulating surface portion so that it can be used as a maintainable and repairable tool for electric vehicles, which expands the application variety and increases the versatility of the present invention.
[0011] The improved structure is designed to be rotatably connected to an operating handle. The operating handle can be a hand tool operating handle, a power tool operating handle, or a pneumatic tool operating handle.The improved structure includes a tool head seat, a drive group, and a transmission group, wherein the drive group includes a drive bevel gear shaft, the transmission group includes a hollow drive bevel gear disk that engages with the drive bevel gear shaft for transmission, and the drive group and the transmission group are housed in the tool head seat so that the rotational speed can be freely adjusted, further comprising a front hollow transmission lock gear shaft and a rear hollow transmission lock gear fixing ring that engages therewith, whereby control by fixed point clockwise rotation and stop by counterclockwise rotation can be performed to increase structural strength and durability, thus achieving better structural strength, stability, and functionality. Brief description of the drawings Fig. 1 shows a schematic perspective view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. Figure 2 is a schematic exploded perspective view of the improved structure of the ratchet head and its drive mechanism according to the present invention; Fig. Figure 3 shows a schematic sectional view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. 4 is a schematic view showing the clockwise and counterclockwise rotation states of the improved structure of the reversible ratchet head and its drive device according to the present invention; Fig. Fig. 5 is a schematic view of the use state according to the present invention, in which the improved structure of the reversible ratchet head and its drive device are combined with a hand tool; Fig. Fig. 6 is a schematic view of the use state according to the present invention, in which the improved structure of the reversible ratchet head and its drive device are combined with a power tool; Fig. Fig. 7 is a schematic view of the use state according to the present invention, in which the improved structure of the reversible ratchet head and its drive device are combined with a pneumatic tool; Fig. 8 shows a schematic view of an embodiment of the improved structure of the reversible ratchet head and its drive device according to the invention, in which the tool head seat is covered by an insulating cover; Fig. 9 shows a schematic sectional view of a conventional ratchet head structure. Detailed description of the embodiment
[0012] To better understand the structure, features, and other purposes of the invention, a preferred embodiment is described in detail with reference to the figures. This description represents only a preferred embodiment of the invention and is not intended to limit the claims.
[0013] It is based on the Fig. 1 to 4 are referred to. Fig. 1 shows a schematic perspective view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. Figure 2 is a schematic exploded perspective view of the improved structure of the ratchet head and its drive mechanism according to the present invention; Fig. Figure 3 shows a schematic sectional view of the improved structure of the reversible ratchet head and its drive device according to the invention; and Fig. Figure 4 shows a schematic view of the clockwise and counterclockwise rotational states of the improved ratchet head structure and its drive mechanism according to the invention. The improved structure is designed to be rotatably connected to an operating handle 40 and includes the following:
[0014] a tool head seat 10 having an upper gear seat portion 11 and a lower drive seat portion 12 formed integrally therewith, wherein a front opening 110, an inner gear accommodating chamber 111, and a rear opening 112 extend from front to rear through the upper gear seat portion 11, the rear opening 112 is provided with an annular inner surface 113, a plurality of positioning projections 113A are arranged near the inner edge of the annular inner surface 113, the lower drive seat portion 12 is hollow and has an inner drive accommodating chamber 120, and the inner drive accommodating chamber 120 is continuously connected to the inner gear accommodating chamber 111;
[0015] a drive group 20 comprising a drive bevel gear shaft 21, a plurality of drive bearings 22, and a hollow mounting disk 23, wherein the drive bevel gear shaft 21 is integrally provided with a vertical drive bevel gear disk 210 and a drive shaft 211, and the drive shaft 211 is inserted into the plurality of drive bearings 22 such that the drive shaft 211 is rotatable relative to the drive bearings 22, wherein the hollow mounting disk 23 abuts and is fixed to the lower drive bearing 22;
[0016] a transmission group 30 comprising a front transmission assembly 31 and a rear fastening assembly 32, wherein the front transmission assembly 31 is provided with a screwdriver bit 310, a front ring cover 311, a hollow transmission bevel gear disk 312, a front hollow transmission ratchet shaft 313, and an engagement / fastening ring 314, the screwdriver bit 310 is laterally provided with a limiting recess 310A, a positioning fastening ring groove 311A is provided on the inside of the front ring cover 311, the hollow transmission bevel gear disk 312 has a hollow engagement shaft 312A and a hollow horizontal drive bevel gear disk 312B formed integrally therewith, the end surface of the front hollow transmission ratchet shaft 313 is provided with a front ratchet portion 313A, the front hollow transmission ratchet shaft 313 is provided laterally with a limiting hole 313B,a limiting piece 313C is inserted into the limiting hole 313B and the screwdriver bit 310 is pushed through the front hollow transmission ratchet shaft 313, wherein the limiting recess 310A of the screwdriver bit 310 is arranged relative to the limiting piece 313C of the limiting hole 313B of the front hollow transmission ratchet shaft 313 such that the screwdriver bit 310 is slidable forwards and backwards in the front hollow transmission ratchet shaft 313 for limit adjustment, wherein the hollow engaging shaft 312A of the hollow transmission bevel gear disk 312 is engaged with the positioning fastening ring groove 311A of the front ring cover 311, so that the hollow transmission bevel gear disk 312 is rotatable relative to the positioning fastening ring groove 311A, wherein the front hollow transmission ratchet shaft 313 is inserted through the hollow Transmission bevel gear disc 312 is inserted,the abutment / fixing ring 314 is fitted onto the front hollow transmission ratchet shaft 313 and abuts the end face of the hollow transmission bevel gear disc 312 for fastening, wherein the rear fastening assembly 32 further comprises a rear hollow transmission ratchet fixing ring 320, a rear ring cover 321 and a retaining spring 322, a lateral end face of the rear hollow transmission ratchet fixing ring 320 is provided with a rear ratchet portion 320A, a plurality of spaced positioning recesses 320B are provided on the circumference of the rear hollow transmission ratchet fixing ring 320, the retaining spring 322 is in an abutting,compressed and elastically recoverable state between the rear hollow transmission locking wheel mounting ring 320 and the rear ring cover 321 and the screwdriver bit 310 of the front transmission assembly 31 is inserted through the rear hollow transmission locking wheel mounting ring 320, the retaining spring 322 and the rear ring cover 321.
[0017] Here, the transmission group 30 is housed in the upper gear seat section 11 of the tool head seat 10, wherein the front ring cover 311 of the front transmission assembly 31 is attached to the front opening 110 of the upper gear seat section 11 and the rear ring cover 321 of the rear attachment assembly 32 is attached to the rear opening 112 of the upper gear seat section 11, so that the front ratchet wheel section 313A of the front hollow transmission ratchet shaft 313 of the front transmission assembly 31 is engaged with the rear ratchet wheel section 320A of the rear hollow transmission ratchet attachment ring 320 of the rear attachment assembly 32, wherein the retaining spring 322 of the rear attachment assembly 32 provides control by clockwise rotation, in which engagement is effected by jumping from tooth to tooth, and counterclockwise rotation. Clockwise stopping is enabled,can be carried out, wherein further the drive group 20 is housed in the lower drive seat section 12 of the tool head seat 10, the hollow fastening disc 23 of the drive group 20 abuts the inner wall of the inner drive receiving chamber 120 of the lower drive seat section 12, the vertical drive bevel gear disc 210 of the drive bevel gear shaft 21 of the drive group 20 engages and moves with the hollow horizontal drive bevel gear disc 312B of the hollow transmission bevel gear disc 312 of the front transmission assembly 31 of the transmission group 30, and the drive bevel gear shaft 21 of the drive group 20 is engageable with the operating handle 40.
[0018] The above structure completes the improved structure of the reversible ratchet head and its drive device according to the invention.
[0019] It is based on the Fig. 1 to 7 are referred to. Fig. 1 shows a schematic perspective view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. Figure 2 is a schematic exploded perspective view of the improved structure of the ratchet head and its drive mechanism according to the present invention; Fig. Figure 3 shows a schematic sectional view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. 4 is a schematic view showing the clockwise and counterclockwise rotation states of the improved structure of the reversible ratchet head and its drive device according to the present invention; Fig. Fig. 5 is a schematic view of the use state according to the present invention, in which the improved structure of the reversible ratchet head and its drive device are combined with a hand tool; Fig. Figure 6 shows a schematic view of the state of use according to the present invention, in which the improved structure of the reversible ratchet head and its drive device is combined with a power tool; and Fig. Figure 7 shows a schematic view of the use state according to the present invention, in which the improved structure of the reversible ratchet head and its drive device are combined with a pneumatic tool. The improved structure is designed to be rotatably connectable to an operating handle 40. The operating handle 40 is a hand tool operating handle 41, a power tool operating handle 42, or a pneumatic tool operating handle 43.The improved structure includes a tool head seat 10, a drive group 20, and a transmission group 30, wherein the drive group 20 includes a drive bevel gear shaft 21, the transmission group 30 includes a hollow drive bevel gear disk 312 that engages the drive bevel gear shaft for transmission, and the drive group 20 and the transmission group 30 are housed in the tool head seat 10 so that the rotational speed can be freely adjusted. Further, the transmission group 30 includes a front hollow transmission lock gear shaft 313 and a rear hollow transmission lock gear fixing ring 320 that engages the front hollow transmission lock gear shaft 313, whereby control by fixed point clockwise rotation and stop by counterclockwise rotation can be performed to increase structural strength and durability, thus achieving better structural strength, stability, and functionality.
[0020] It is based on the Fig. 1 to 3 are referred to. Fig. 1 shows a schematic perspective view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. Figure 2 shows a schematic perspective exploded view of the improved structure of the reversible ratchet head and its drive device according to the invention; and Fig. Figure 3 shows a schematic sectional view of the improved structure of the reversible ratchet head and its drive device according to the invention. In a preferred embodiment, one end of the inner drive receiving chamber 120 of the lower drive seat portion 12 of the tool head seat 10 is provided with an inwardly directed positioning and receiving segment 121, with a stepped annular recess 122 provided below the positioning and receiving segment 121. After a plurality of drive bearings 22 have been vertically mounted on the drive bevel gear shaft 21 of the drive assembly 20, they are housed in the positioning and receiving segment 121. The hollow retaining washer 23 is housed in the stepped annular recess 122 to position the drive bearings 22, thus improving the stability of the structure during use and the versatility of the present invention.
[0021] It is based on the Fig. 1 to 3 are referred to. Fig. 1 shows a schematic perspective view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. Figure 2 shows a schematic perspective exploded view of the improved structure of the reversible ratchet head and its drive device according to the invention; and Fig. Figure 3 shows a schematic sectional view of the improved structure of the reversible ratchet head and its drive mechanism according to the present invention. In a preferred embodiment, the end face of the drive shaft 211 of the drive bevel gear shaft 21 of the vertical drive group 20 is provided with a positioning mounting hole 211A, which is secured to the drive end of the operating handle 40 to improve the convenience of use of the structure and the versatility of the present invention.
[0022] It is based on the Fig. 1 to 3 are referred to. Fig. 1 shows a schematic perspective view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. Figure 2 shows a schematic perspective exploded view of the improved structure of the reversible ratchet head and its drive device according to the invention; and Fig. Figure 3 shows a schematic sectional view of the improved structure of the reversible ratchet head and its drive mechanism according to the invention. In a preferred embodiment, the positioning mounting hole 211A of the drive shaft 211 is designed in the shape of a square, hexagonal, or star-shaped hole (not shown) to improve the convenience of use of the structure and the versatility of the present invention.
[0023] It is based on the Fig. 1 to 3 are referred to. Fig. 1 shows a schematic perspective view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. Figure 2 shows a schematic perspective exploded view of the improved structure of the reversible ratchet head and its drive device according to the invention; and Fig. 3 shows a schematic sectional view of the improved structure of the reversible ratchet head and its drive mechanism according to the present invention. In a preferred embodiment, the front ratchet portion 313A provided on the end surface of the front hollow transmission ratchet shaft 313 and the rear ratchet portion 320A provided on the end surface of the rear hollow transmission ratchet fixing ring 320 have their ratchet teeth arranged at a negative angle with a slanted shape that is high at the front and low at the rear to increase the relative engagement force between the front ratchet portion 313A and the rear ratchet portion 320A. By increasing the engagement area between the front ratchet portion 313A and the rear ratchet portion 320A, the engagement strength can be increased to enhance the versatility of the present invention.
[0024] It is based on the Fig. 1 to 3 are referred to. Fig. 1 shows a schematic perspective view of the improved structure of the reversible ratchet head and its drive device according to the invention; Fig. Figure 2 shows a schematic perspective exploded view of the improved structure of the reversible ratchet head and its drive device according to the invention; and Fig. Figure 3 shows a schematic sectional view of the improved structure of the reversible ratchet head and its drive device according to the invention. In a preferred embodiment, a locking ring groove 113B is provided near the outer edge of the inner ring surface 113 of the rear opening 112 of the upper gear seat portion 11, and the transmission assembly 30 is further equipped with an elastic fastening piece 33. After the transmission assembly 30 is housed in the inner gear receiving chamber 111 of the upper gear seat portion 11, the elastic fastening piece 33 elastically engages the locking ring groove 113B, so that the transmission assembly 30 is held by the elastic fastening piece 33 and housed in the inner gear receiving chamber 111 to enhance the versatility of the present invention.
[0025] It will be Fig.8, which shows a schematic view of an embodiment of the improved structure of the reversible ratchet head and its drive device according to the invention, in which the tool head seat is covered by an insulating cover. In a preferred embodiment, the tool head seat 10 is covered by an insulating surface portion 13 so that it can be used as a serviceable and repairable tool for electric vehicles, thus expanding the application diversity and increasing the versatility of the present invention.
[0026] In summary, it can be said that the present invention actually achieves the desired effect and the stated objective. The invention therefore meets the requirements for a utility model application. The application is filed in accordance with the law.
[0027] The present invention relates to an improved structure of the reversible ratchet head and its drive device, which is designed to be rotatably connected to an operating handle and comprises a tool head seat, a drive group, and a transmission group, wherein the drive group comprises a drive bevel gear shaft, the transmission group comprises a hollow drive bevel gear disk that engages the drive bevel gear shaft for transmission, and the drive group and the transmission group are housed in the tool head seat so that the rotational speed can be freely adjusted, wherein the transmission group further comprises a front hollow transmission locking gear shaft and a rear hollow transmission locking gear fixing ring that engages the front hollow transmission locking gear fixing ring, whereby control can be carried out by a fixed point clockwise rotation and a stop effected by counterclockwise rotation.to increase structural strength and durability and thus achieve better structural strength, stability and functionality. List of reference symbols 10 Tool head seat 11 upper gearbox seat section 110 front opening 111 inner gear housing chamber 112 rear opening 113 inner ring surface 113A Positioning projection 113B locking ring groove 12 lower drive seat section 120 inner drive chamber 121 Positioning and recording segment 122 stepped ring recess 13 Insulation surface section 20 drive group 21 Drive bevel gear shaft 210 vertical drive bevel gear disc 211 drive shaft 211A positioning mounting hole 22 drive bearings 23 hollow mounting disc 30 transmission group 31 front transmission assembly 310 screwdriver bit 310A limiting recess 311 front ring cover 311A positioning mounting ring groove 312 hollow transmission bevel gear disc 312A hollow engagement shaft 312B hollow horizontal drive bevel gear disc 313 front hollow transmission ratchet shaft 313A front ratchet wheel section 313B limit hole 313C limiting piece 314 mounting / fixing ring 32 rear mounting assembly 320 rear hollow transmission ratchet mounting ring 320A rear ratchet wheel section 320B Positioning recess 321 rear ring cover 322 retaining spring 33 elastic fastening piece 40 Operating handle 41 Hand tool operating handle 42 Power tool operating handle 43 Pneumatic tool operating handle 50 reversible ratchet head group 51 clamp seat 510 connecting handle 510A Swivel drive shaft 510B drive ball 511 clamping head with through hole 511A toothed swivel ring 511B Ball receiving opening 52 drive head 520 drive head body 521 side ratchet wheel block 521A engagement ratchet tooth
Claims
[1] Improved structure of the drive device for reversible ratchet heads, comprising: a drive assembly comprising a drive bevel gear shaft, a plurality of drive bearings, and a hollow mounting disk, the drive bevel gear shaft being integrally formed with a vertical drive bevel gear disk and a drive shaft, the drive shaft being inserted into the plurality of drive bearings for rotation relative to the drive bearings, the hollow mounting disk being abutted against and secured to the lower drive bearing; and a transmission group comprising a front transmission assembly and a rear fastening assembly, wherein the front transmission assembly is provided with a screwdriver bit, a hollow transmission bevel gear disc, a front hollow transmission ratchet shaft, and a contact / fastening ring, the screwdriver bit is laterally provided with a limiting recess, the hollow transmission bevel gear disc has a hollow engagement shaft and a hollow horizontal drive bevel gear disc formed integrally therewith, the end surface of the front hollow transmission ratchet shaft is provided with a front ratchet portion, the front hollow transmission ratchet shaft is laterally provided with a limiting hole, a limiting piece is inserted into the limiting hole, and the screwdriver bit is inserted through the front hollow transmission ratchet shaft,wherein the limit recess of the screwdriver bit is arranged relative to the limit piece of the limit bore of the front hollow transmission ratchet shaft such that the screwdriver bit can be slid forwards and backwards in the front hollow transmission ratchet shaft for limit adjustment, wherein the hollow engagement shaft of the hollow transmission bevel gear disc engages with the positioning fastening ring groove of the front ring cover such that the hollow transmission bevel gear disc is rotatable relative to the positioning fastening ring groove, wherein the front hollow transmission ratchet shaft is inserted through the hollow transmission bevel gear disc, the abutment / fastening ring is slipped onto the front hollow transmission ratchet shaft and abuts against the end surface of the hollow transmission bevel gear disc for fastening, wherein the rear fastening assembly further comprises a rear hollow transmission ratchet fastening ring,a rear ring cover and a retaining spring, a lateral end surface of the rear hollow transmission ratchet fixing ring is provided with a rear ratchet portion, a plurality of spaced-apart positioning notches are provided on the periphery of the rear hollow transmission ratchet fixing ring, the retaining spring is in an abutting, compressed, and elastically recoverable state between the rear hollow transmission ratchet fixing ring and the rear ring cover, and the screwdriver bit of the front transmission assembly is inserted through the rear hollow transmission ratchet fixing ring, the retaining spring, and the rear ring cover; wherein the front ratchet portion of the front hollow transfer ratchet shaft of the front transfer assembly is engaged with the rear ratchet portion of the rear hollow transfer ratchet mounting ring of the rear mounting assembly, wherein control is provided by the retaining spring of the rear mounting assembly through clockwise rotation causing engagement by jumping from tooth to tooth, and counterclockwise rotation causing stoppage, wherein the vertical drive bevel gear disc of the drive group drive bevel gear shaft is engaged with and moves with the hollow horizontal drive bevel gear disc of the hollow transfer bevel gear disc of the front transfer assembly of the transfer group. [2] An improved structure of the drive device for reversible ratchet heads according to claim 1, wherein the positioning fixing hole of the drive shaft is in the shape of a square, hexagonal or star-shaped hole. [3] The improved structure of the reversible ratchet head driving device according to claim 1, wherein the front ratchet portion provided on the end surface of the front hollow transmission ratchet shaft and the rear ratchet portion provided on the end surface of the rear hollow transmission ratchet fixing ring have the ratchet teeth arranged at a negative angle with a slant shape that is high at the front and low at the rear. [4] Improved ratchet head structure designed to be rotatably connected to an operating handle and comprising: a tool head seat having an upper gear seat portion and a lower drive seat portion formed integrally therewith, wherein a front opening, an inner gear receiving chamber, and a rear opening extend from front to rear through the upper gear seat portion, the rear opening is provided with an annular inner surface, a plurality of positioning projections are arranged near the inner edge of the annular inner surface, the lower drive seat portion is hollow and has an inner drive receiving chamber, and the inner drive receiving chamber is continuously connected to the inner gear receiving chamber; a drive assembly comprising a drive bevel gear shaft, a plurality of drive bearings, and a hollow mounting disk, the drive bevel gear shaft being integrally formed with a vertical drive bevel gear disk and a drive shaft, the drive shaft being inserted into the plurality of drive bearings for rotation relative to the drive bearings, the hollow mounting disk being abutted against and secured to the lower drive bearing; and a transmission group comprising a front transmission assembly and a rear fastening assembly, wherein the front transmission assembly is provided with a screwdriver bit, a front ring cover, a hollow transmission bevel gear disc, a front hollow transmission ratchet shaft, and a seating / fastening ring, the screwdriver bit is laterally provided with a limiting recess, a positioning fastening ring groove is provided on the inside of the front ring cover, the hollow transmission bevel gear disc has a hollow engagement shaft and a hollow horizontal drive bevel gear disc formed integrally therewith, the end surface of the front hollow transmission ratchet shaft is provided with a front ratchet portion, the front hollow transmission ratchet shaft is laterally provided with a limiting hole,a limiting piece is inserted into the limiting hole and the screwdriver bit is pushed through the front hollow transmission ratchet shaft, wherein the limiting recess of the screwdriver bit is arranged relative to the limiting piece of the limiting hole of the front hollow transmission ratchet shaft such that the screwdriver bit can be slid forwards and backwards in the front hollow transmission ratchet shaft for limit adjustment, wherein the hollow engaging shaft of the hollow transmission bevel gear disc engages with the positioning fastening ring groove of the front ring cover so that the hollow transmission bevel gear disc is rotatable relative to the positioning fastening ring groove, wherein the front hollow transmission ratchet shaft is pushed through the hollow transmission bevel gear disc,the abutment / fixing ring is slipped onto the front hollow transmission ratchet shaft and abuts the end surface of the hollow transmission bevel gear disk for fastening, wherein the rear fastening assembly further comprises a rear hollow transmission ratchet fixing ring, a rear ring cover, and a retaining spring, a lateral end surface of the rear hollow transmission ratchet fixing ring is provided with a rear ratchet portion, a plurality of spaced-apart positioning recesses are provided on the circumference of the rear hollow transmission ratchet fixing ring, the retaining spring is in an abutting, compressed, and elastically recoverable state between the rear hollow transmission ratchet fixing ring and the rear ring cover, and the screwdriver bit of the front transmission assembly is inserted through the rear hollow transmission ratchet fixing ring,the retaining spring and the rear ring cover are pushed through;, wherein the transmission group is housed in the upper gear seat portion of the tool head seat, the front ring cover of the front transmission assembly is attached to the front opening of the upper gear seat portion, and the rear ring cover of the rear fastening assembly is attached to the rear opening of the upper gear seat portion, so that the front ratchet portion of the front hollow transmission ratchet shaft of the front transmission assembly engages with the rear ratchet portion of the rear hollow transmission ratchet fastening ring of the rear fastening assembly, wherein the retaining spring of the rear fastening assembly enables control by clockwise rotation, in which engagement is effected by jumping from tooth to tooth, and stop, effected by counterclockwise rotation,wherein the drive assembly is housed in the lower drive seat portion of the tool head seat, the hollow mounting disk of the drive assembly abuts the inner wall of the inner drive receiving chamber of the lower drive seat portion, the vertical drive bevel gear disk of the drive bevel gear shaft of the drive assembly engages and moves with the hollow horizontal drive bevel gear disk of the hollow transmission bevel gear disk of the front transmission assembly of the transmission assembly, and the drive bevel gear shaft of the drive assembly is engageable with the operating handle. [5] The improved structure of the reversible ratchet head according to claim 4, wherein one end of the inner drive receiving chamber of the lower drive seat portion of the tool head seat is provided with an inwardly directed positioning and receiving segment, a stepped annular recess is provided below the positioning and receiving segment, wherein after a plurality of drive bearings are vertically fitted onto the drive bevel gear shaft of the drive group, they are housed in the positioning and receiving segment, the hollow fixing disk is housed in the stepped annular recess to position the drive bearings. [6] The improved structure of the reversible ratchet head according to claim 5, wherein the end surface of the drive shaft of the drive bevel gear shaft of the vertical drive group is provided with a positioning fixing hole, the positioning fixing hole being fixed to the drive end of the operating handle. [7] An improved structure of the reversible ratchet head according to claim 6, wherein the positioning fixing hole of the drive shaft is in the shape of a square, hexagonal or star-shaped hole. [8] The improved structure of the reversible ratchet head according to claim 7, wherein the front ratchet portion provided on the end surface of the front hollow transmission ratchet shaft and the rear ratchet portion provided on the end surface of the rear hollow transmission ratchet fixing ring have the ratchet teeth arranged at a negative angle with a slant shape that is high at the front and low at the rear. [9] The improved structure of the reversible ratchet head according to claim 4, wherein a locking ring groove is provided near the outer edge of the ring inner surface of the rear opening of the upper gear seat portion, wherein the transmission group is further provided with an elastic fastening piece, wherein, after the transmission group is housed in the inner gear accommodating chamber of the upper gear seat portion, the elastic fastening piece elastically engages the locking ring groove, so that the transmission group is held by the elastic fastening piece and housed in the inner gear accommodating chamber. [10] An improved structure of the reversible ratchet head according to any one of claims 4 to 9, wherein the tool head seat is covered by an insulating surface portion.