TWI671171B - Electric and pneumatic tool transmission structure - Google Patents

Abstract

An electric and pneumatic tool transmission structure is mainly provided with a connecting seat in front of the fuselage of an electric and pneumatic tool. The connecting seat is equipped with a machine head, a traction member and a knob. The gear ring of the transmission component in the connecting seat is connected, and the operation of the knob can be used to drive the gear ring to move forward and backward through the traction member through the operation of the knob outside the connecting seat.俾 Using the change of the locked state of the shifting gear ring after translation, so that the electric and pneumatic tools can provide two different modes of low speed, high torque, high speed, and low torque, and the transmission component also contains There is a first planet carrier installed in the inner ring portion of the shifting ring gear, a second planet carrier and a fixed ring gear installed inside the connecting seat and behind the shifting ring gear, and the first The planetary carrier outputs power through a central axis that continuously passes through the connecting seat and the machine head and protrudes from the front end of the machine head, and a first engaging portion is provided on the transmission gear ring. A connection seat or the fixed ring gear or Alternatively said machine head is provided with a second insert card portion.

Description

Electric and pneumatic tool transmission structure

The present invention relates to an "electrical and pneumatic tool transmission structure", and more particularly to an electric and pneumatic tool transmission structure that is simpler and easier to switch gears.

According to the current known electric drills, pneumatic drills and other handheld electric and pneumatic tools, there are mainly two design forms, one is to provide use at high speed and low torque at startup, and the other has high torque However, the rotation speed is low; however, it is difficult to achieve the same electric and pneumatic tools with the two different modes of high speed and high torque at the same time by the existing technology. Even the switching is quite complicated, so it is still in the existing implementation operation Two different types of electric and pneumatic tools will be prepared at the same time. As a result, the cost of use will increase, and it will be more cumbersome and take up space to carry or store.

Therefore, if an electric and pneumatic tool with two different modes of high speed and high torque can be developed, the electric and pneumatic tools can be switched easily and quickly and conveniently. The preparation of an electric and pneumatic tool can meet most of the work requirements, which is the problem that the inventor wants to improve.

Therefore, the inventor was thinking about the idea of creation in light of this, and designed it based on many years of experience. After many discussions and trials, he experimented with samples and revised and improved many times. Bright.

The electric and pneumatic tool transmission structure of the present invention is mainly provided with a connecting base in front of the fuselage of an electric and pneumatic tool. The connecting base is equipped with a machine head, a traction member and a knob. The transmission gear ring of the transmission component put in the connecting seat can be connected through the operation of the knob outside the connecting seat through the traction member to drive the transmission gear ring to generate forward and backward directions. Translation, using the change of clamping state of the shifting gear ring after translation, so that the electric and pneumatic tools can have two different modes of low speed, high torque and high speed, low torque, and the transmission component It also includes a first planet carrier installed in the inner ring portion of the transmission ring gear, a second planet carrier and a fixed ring gear installed inside the connection seat and behind the transmission ring gear, and the The first planetary carrier outputs power through a central axis that continuously passes through the connecting seat and the machine head and protrudes from the front end of the machine head, and a first engaging portion is provided on the transmission gear ring. The connecting seat or the fixed tooth Or one of the machine heads is provided with a second card inserting section, wherein the connecting seat is a hollow inner casing, so that the front and rear of the connecting seat can be a first opening and a second opening, respectively. And the first opening is provided with a first coupling section, so that the connection base can use the first coupling section to be assembled with the machine head placed inside, the machine head is a hollow tube, and has a A first end located at the front and a second end located at the rear, an enlarged portion is formed at the second end of the nose of the nose, and a second combination section and The first joint section of the connecting seat is assembled, and the outer periphery of the enlarged portion is also provided with a plurality of through grooves at an equal distance, and the inner wall of the head is provided with a bearing for providing a sleeve on the outer periphery of the central shaft. An embedded step edge, the traction member has a set of loops, and a number of buckle claws matching the passage grooves are protruded from the rear end of the loop. The loop and the knob are sleeved in order. It is provided on the outer periphery of the nose protruding from the connecting base, so that the claw can penetrate from the through groove into the inside of the connecting base, and the formation of the driven part on the outer periphery of the collar is used to communicate with The active part of the inner wall of the knob is matched, so that the traction member can be controlled to be translated forward or backward by the rotation of the knob. A first engaging portion and a ring groove are provided on the gear shift ring. When the shifting gear ring is put into the sleeve inside the connecting seat, the ring groove is buckled by the claw, so that the shifting gear ring can be smoothly connected with the traction member, and the first A snap-in part provides latching or disengagement, so that the shifting gear ring can achieve shifting on the shifting speed, and the upper hub of the first planet carrier There are a plurality of first planetary gears, and the first planetary carrier is an inner ring part which is sleeved into the speed change ring gear, so that the central shaft can protrude from the connecting seat through the machine head, and use the first A planetary gear meshes with the inner ring tooth portion of the speed change ring gear, and the outer periphery of the first planet carrier is provided with the high speed and low torque mode to be in phase with the inner ring tooth portion of the speed change ring gear. The ring gear of the bite is provided with a plurality of second planetary gears on the second planet carrier. A sun gear meshing between the first planetary gears is combined in the front. The fixed ring gear is a second opening fixed on the connecting seat. In the middle, the fixed ring gear and the first planet carrier are pivotally sleeved on the second planet carrier in the connection seat to limit the position. Using the arrangement of the inner ring teeth of the fixed ring gear, the The inner ring tooth portion provides the second planetary gear of the second planet carrier for meshing; thereby, it is able to constitute the electric and pneumatic tool transmission structure.

According to the electric and pneumatic tool transmission structure of the present invention, the electric and pneumatic tools are provided with two modes of low rotation speed, high torque, high rotation speed, and low torque at the same time, and only a simple rotation is needed to switch the speed of the modes. The knob can be used, so that the user only needs to prepare one of the electric and pneumatic tools to meet most of the work needs, the cost of use is low, it will be more convenient to carry or store without taking up space, and it will also be easy to operate. Easier and faster.

Part of the invention:

(10) ‧‧‧Electric and pneumatic tools

(11) ‧‧‧Airframe

(20) ‧‧‧Connector

(201) ‧‧‧First opening

(202) ‧‧‧Second Opening

(203) ‧‧‧ the first combined paragraph

(21) ‧‧‧Cap

(30) ‧‧‧Head

(301) ‧‧‧First End

(302) ‧‧‧ second end

(303) ‧‧‧Expansion Department

(304) ‧‧‧ second combined paragraph

(305) ‧‧‧Through the trough

(306) ‧‧‧step margin

(31) ‧‧‧bearing

(40) ‧‧‧Towing

(41) ‧‧‧ Collar

(42) ‧‧‧Claw

(43) ‧‧‧ Follower

(50) ‧‧‧Knob

(51) ‧‧‧Active Department

(60) ‧‧‧Shifting components

(61) ‧‧‧Speed Gear Ring

(611) ‧‧‧The first card insertion section

(612) ‧‧‧Circle trench

(62) ‧‧‧First planetary carrier

(621) ‧‧‧Center axis

(622) ‧‧‧First planetary gear

(623) ‧‧‧Ring Tooth

(63) ‧‧‧Second Planetary Carrier

(631) ‧‧‧Second Planetary Gear

(632) ‧‧‧Sun Gear

(64) ‧‧‧Fixed ring gear

(70) ‧‧‧Second Card Insertion Section

The first figure is a perspective view of the electric and pneumatic tools of the present invention.

The second figure is a three-dimensional combination diagram of the present invention.

FIG. 3 is an exploded perspective view of the first preferred embodiment of the present invention.

The fourth figure is a diagram of the operating state of the first preferred embodiment of the present invention in a low speed and high torque state.

Fifth figure: It is the operation state diagram of the first preferred embodiment of the present invention after the switching in a high speed and low torque state.

FIG. 6 is an exploded perspective view of the second preferred embodiment of the present invention.

The seventh diagram is a diagram of the operating state of the second preferred embodiment of the present invention in a low speed and high torque state.

Eighth figure: It is the operation state diagram of the second preferred embodiment of the present invention in a high speed and low torque state after switching.

The ninth figure is an exploded perspective view of the third preferred embodiment of the present invention.

Tenth figure: It is a diagram of the operating state of the third preferred embodiment of the present invention in a low speed and high torque state.

Fig. 11 is a sectional view of the tenth drawing of the present invention.

Twelfth figure: It is the operation state diagram of the third preferred embodiment of the present invention under high speed and low torque after switching.

Figure 13: An exploded perspective view of the fourth preferred embodiment of the present invention.

Fourteenth figure: It is the operation state diagram of the fourth preferred embodiment of the present invention in a low speed and high torque state.

Fig. 15 is a sectional view of Fig. 14 of the present invention.

Sixteenth figure: It is the operation state diagram of the fourth preferred embodiment of the present invention under high speed and low torque after switching.

In order for your reviewers to have a further understanding and understanding of the purpose, features and effects of the present invention, the following are detailed below with the help of [Schematic Description]:

Generally according to the present invention, firstly, as shown in the first to fourth figures, it is mainly provided with a connection base (20) in front of a fuselage (11) of an electric and pneumatic tool (10). A head (30), a traction member (40) and a knob (50) are installed on the (20), and the traction member (40) and a speed change assembly (60) placed in the connecting seat (20) are used. The transmission gear ring (61) is connected, and the transmission gear ring (61) can be driven by the traction member (40) through the operation of the knob (50) outside the connecting seat (20). Forward and backward translation, 俾 Using the change of the shifting ring gear (61) to lock the state after translation, so that the electric and pneumatic tools (10) can have low speed, high torque and high speed, low torque Species Different modes provide options, and the transmission assembly (60) also includes a first planet carrier (62) installed in the inner ring portion of the transmission ring gear (61) and installed inside the connection seat (20). A second planet carrier (63) and a fixed toothed ring (64) located behind the shifting ring gear (61), and the first planet carrier (62) passes through the connecting seat (20) continuously. A central axis (621) extending from the front end of the head (30) with the head (30) for power output, and a first engaging portion (611) is provided on the gear ring (61) A second inserting portion (70) is provided on the connecting base (20) or the fixed ring gear (64) or the machine head (30), wherein the connecting base (20) is a The inside of the housing is hollow, so that the connecting seat (20) can be a first opening (201) and a second opening (202), respectively, and a first opening (201) is provided in the first opening (201). The combination section (203) allows the connection base (20) to use the first combination section (203) to be assembled with the machine head (30) placed inside, and the machine head (30) is a hollow Tube, which has a first end (301) located in the front and a second end (302) located in the rear, and the head (30) An enlarged portion (303) is formed at the second end (302) on the periphery, and the second joint section (304) provided on the enlarged portion (303) and the first of the connecting seat (20) are formed. The connecting section (203) is assembled, and the enlarged periphery (303) is also provided with a plurality of through grooves (305) at an equidistant periphery, and an inner wall of the machine head (30) is provided to provide a sleeve in the center. The bearing (31) on the outer periphery of the shaft (621) is an embedded step edge (306), and the traction member (40) has a set of rings (41). A number of The numbering claws (42) of the passage groove (305) are matched, and the collar (41) and the knob (50) are sequentially set on the handpiece (30) to extend the connection. On the outer periphery of the seat (20), the claw (42) can be passed through the through groove (305) into the inside of the connecting seat (20), and the driven part of the outer periphery of the collar (41) is used ( 43), and fit with the active part (51) on the inner wall of the knob (50), so that the traction member (40) can be controlled forward or backward by the rotation of the knob (50) After driving The translation gear ring (61) is provided with a first engaging portion (611) and a ring groove (612). When the gear ring gear (61) is put into the sleeve inside the connecting seat (20), The ring groove (612) is fastened by the buckle claw (42), so that the transmission gear ring (61) can be smoothly connected with the traction member (40), and the first engaging portion (611) is used. ) Provides a latch or disengagement, so that the shifting ring gear (61) can achieve shifting on shifting speed, a plurality of first planetary gears (622) are pivotally provided on the first planetary carrier (62), and the first planetary carrier (62) is an inner ring part which is sleeved into the gear ring (61), so that the central shaft (621) can protrude from the connecting seat (20) through the machine head (30), and The first planetary gear (622) is meshed with the inner ring tooth portion of the shifting ring gear (61), and the outer periphery of the first planetary carrier (62) is set in a high speed and low torque mode. The ring gear (623) whose inner ring teeth intersect with the gear ring (61). A plurality of second planet gears (631) are pivotally arranged on the second planet carrier (63). A sun gear (632) between a planetary gear (622), and a fixed ring gear (64) is installed and fixed at In the second opening (202) of the connecting seat (20), the fixed planetary ring (64) and the first planet carrier (62) are pivotally sleeved on the second planet carrier in the connecting seat (20). (63) As a limit position, using the setting of the inner ring tooth portion of the fixed ring gear (64), the second planetary gear (631) of the inner ring tooth portion providing the second planet carrier (63) can also be used as Engager.

The invention provides an electric and pneumatic tool transmission structure, wherein the first engaging portion (611) is a limiting engaging tooth and the second engaging portion (70) provided on the outer periphery of the gear ring (61). ) Is a fixed clamping tooth disposed behind the inner wall of the connecting seat (20), and the fixed clamping tooth is used to clamp the limit position under the normal state that the electric and pneumatic tools (10) are in a low speed and high torque mode. The tooth is locked, so that the speed change ring gear (61) cannot be driven by the first planet carrier (62) to rotate together in the low speed and high torque mode (please refer to the third picture and the fourth picture at the same time) View), through the ring tooth (623) is set The design on the outer periphery of the front of the first planet carrier (62) enables the electric and pneumatic tools (10) to use the knob (50) to drive the gear shift ring (61) through the traction member (40). ) Those who have successfully switched over the use mode (please see it from the third picture and the fifth picture at the same time).

The invention provides an electric and pneumatic tool transmission structure, wherein the first engaging portion (611) is a limiting engaging tooth and the second engaging portion (70) provided on the outer periphery of the gear ring (61). ) Is a fixed clamping tooth arranged in front of the inner wall of the connecting seat (20), and the fixed clamping tooth is used to clamp the limit position under the normal state of the electric and pneumatic tool (10) in a low speed and high torque mode. The teeth are locked, so that the speed change ring gear (61) cannot be rotated by the first planet carrier (62) together in the low speed and high torque mode (please refer to the sixth figure and the seventh figure at the same time) (Viewing point), through the design that the ring gear (623) is arranged on the outer periphery behind the first planet carrier (62), the electric and pneumatic tools (10) can be moved by the knob (50). The traction member (40) drives the transmission gear ring (61) to reach a smooth switching in the use mode (please see it from the sixth figure and the eighth figure at the same time).

The invention provides an electric and pneumatic tool transmission structure, wherein the first engaging portion (611) is a limit clamping block protruding from the rear end of the gear ring (61), and the second engaging portion (70) ) Is a fixed clamping block protruding from the front end of the fixed toothed ring (64), and using the fixed clamping block to hold the limit card under the normal state of the electric and pneumatic tool (10) in a low speed and high torque mode Block, so that the speed change ring gear (61) cannot be driven by the first planet carrier (62) to rotate together in this low speed and high torque mode (please refer to the ninth figure and the tenth figure and the tenth at the same time) The view shown in the figure), through the design that the ring gear (623) is arranged on the outer periphery of the front of the first planet carrier (62), the electric and pneumatic tools (10) can use the knob ( 50) The traction member (40) drives the speed change ring gear (61) to reach the use mode forward Those who have successfully switched on the mode (please observe it from the ninth picture and the twelfth picture at the same time).

The invention provides an electric and pneumatic tool transmission structure, wherein the first engaging portion (611) is a limit clamping block protruding from the front end of the transmission ring gear (61), and the second engaging portion (70) ) Is a fixed clip protruding from the second end (302) (rear end) of the head (30), and the fixed clip is in the normal state of the electric and pneumatic tool (10) in a low speed and high torque mode. If the limit clamping block is stuck down, the speed change ring gear (61) cannot be driven to rotate by the first planet carrier (62) in the low speed and high torque mode (please also refer to the tenth The three figures are matched with the views shown in the fourteenth and fifteenth figures). Through the design that the ring teeth (623) are arranged on the outer periphery behind the first planet carrier (62), the electric and pneumatic The tool (10) can use the knob (50) to drive the transmission gear ring (61) through the traction member (40) to achieve a smooth switching in the use mode (please refer to the thirteenth figure and the tenth at the same time) View from six pictures).

The invention provides an electric and pneumatic tool transmission structure, wherein a disc-shaped cover (21) is further incorporated in the second opening (202) of the connection base (20), and the cover (21) Combined to stop the fixed ring gear (64) from coming out of the second opening (202), and a through hole is penetrated through the center of the cover (21).

The invention provides an electric and pneumatic tool transmission structure, in which the first coupling section (203) and the second coupling section (304) are provided with a combination of internal and external threads.

The invention provides an electric and pneumatic tool transmission structure, wherein the driven portion (43) is a majority of knobs provided on the outer periphery of the collar (41), and the driving portion (51) is capable of providing The convex button is a spiral groove to follow during operation.

With the above structure, since it is normally locked by the second card insertion portion (70), Gear ring gear (61), so when the gear shifting assembly (60) receives the power generated by the motor of the electric and pneumatic tool (10) with the second planetary gears (631) of the second planet carrier (63) At this time, the speed change ring gear (61) cannot be driven to rotate by the first planet carrier (62), so that the speed change assembly (60) can only use the fixed ring gear (64), the second planet gear (631), the sun The gear (632) and the first planetary gear (622) are sequentially connected, and cooperate with an appropriate reduction ratio set by the first planetary gear (622) (that is, the first planetary gear 622 rotates around the sun gear 632 once. The central shaft 621 can only rotate about one third of the revolution, or the central shaft 621 makes one revolution, and the first planetary gear 622 needs three revolutions) to output power in a low speed and high torque mode, 俾This mode provides a need for use (please view it at the same time as shown in the fourth, seventh, tenth, and fourteenth).

If high speed and low torque are required during use, the knob (50) is turned in one direction to drive the speed change through the knob (50) through the claws (42) of the traction member (40). The ring gear (61) is translated forward or backward, so that the shift gear ring (61) can be released from the clamping of the second engaging portion (70) after translation, and the shift gear ring (61) is used. The inner ring tooth part bites the first planetary gear (622) and the ring tooth (623) at the same time, and the first planetary gear (622), the first The planet carrier (62) is connected to the central shaft (621) as a whole, at this time, the first planet gear (622) can no longer freely idle, so that the first planet carrier (62) together with the central shaft (621) And the gear ring (61) can mesh with the first planetary gear (622) and the sun gear (632), and directly drive the first planet carrier (62) and the central shaft (621) with the sun gear (632) The gear ring (61) rotates, and the transmission without deceleration enables the electric and pneumatic tools (10) to be used in a high-speed, low-torque output mode (please refer to Figures 5 and 8 at the same time) Figures, 12th and 16th The concept shown).

The above electric and pneumatic tool transmission structure has the following advantages: its electric and pneumatic tools (10) are equipped with two modes of low speed, high torque, high speed, and low torque at the same time. Simply turn the knob (50), so that the user only needs to prepare one of the electric and pneumatic tools (10), which can meet most of the work, the cost of use is low, It will be more convenient to store without taking up space, and it will be easier and faster to operate.

The above is only one of the preferred embodiments of the present invention. When it cannot be used to limit the scope of the present invention; that is, all equal changes and modifications made in accordance with the scope of the patent application for the present invention should still belong to this creation. Within the scope of the patent.

Claims (8)

An electric and pneumatic tool transmission structure is mainly provided with a connecting seat in front of the fuselage of an electric and pneumatic tool. The connecting seat is equipped with a machine head, a traction member and a knob. The gear ring of the transmission component in the connecting seat is connected, and the operation of the knob can be used to drive the gear ring to move forward and backward through the traction member through the operation of the knob outside the connecting seat.俾 Using the change of the locked state of the shifting gear ring after translation, so that the electric and pneumatic tools can provide two different modes of low speed, high torque, high speed, and low torque, and the transmission component also contains There is a first planet carrier installed in the inner ring portion of the shifting ring gear, a second planet carrier and a fixed ring gear installed inside the connecting seat and behind the shifting ring gear, and the first The planetary carrier outputs power through a central axis that continuously passes through the connecting seat and the machine head and protrudes from the front end of the machine head, and a first engaging portion is provided on the transmission gear ring. A connection seat or the fixed ring gear or The head is optionally provided with a second card insertion portion, wherein: the connecting seat is a hollow inner shell, so that the front and rear of the connecting seat can be a first opening and a second opening, respectively, and the A first coupling section is provided in the first opening, so that the connecting base can use the first coupling section to be assembled with the machine head placed inside; the machine head is a hollow tube, and has a front position. The first end of the first end and a second end located rearwardly, an enlarged portion is formed on the outer periphery of the nose at the second end, and a second coupling section provided on the enlarged portion and a first portion of the connecting seat are formed. A combination section is used for assembly, and the enlarged periphery is also provided with a plurality of through grooves at an equidistant periphery, and an inner wall of the machine head is provided with a step edge for providing a bearing sleeved on the outer periphery of the central shaft for embedding. The traction member has a set of loops, and a number of buckle claws protruding in number from the rear end of the loop are matched with the passage groove, and the loop and the knob are sequentially set on the machine. The head protrudes from the outer periphery of the connection seat, so that the claw can penetrate into the inside of the connection seat from the through slot, so as to facilitate The formation of the driven part of the outer periphery of the collar and the engagement with the active part of the inner wall of the knob will enable the traction member to be controlled to be translated by the rotation of the knob forward or backward; The gear ring is provided with a first engaging portion and a ring groove. When the gear shift ring is placed in the sleeve inside the connecting seat, the ring groove is buckled by the claw, so that the gear ring is changed. It can smoothly connect with the traction member, and use the first engaging portion to provide latching or disengagement, so that the shifting gear ring can achieve switching on the shifting speed. A plurality of first For a planetary gear, the first planetary carrier is sleeved into an inner ring portion of the transmission ring gear, so that the central shaft can protrude from the connecting seat through the nose, and is meshed with the first planetary gear. The inner ring teeth of the shifting ring gear and the outer periphery of the first planet carrier are provided with ring teeth that engage with the inner ring teeth of the shifting ring gear in a high-speed, low-torque mode. A plurality of second planetary gears are pivotally arranged on the second planet carrier, and a gear meshing between the first planetary gears is coupled at the front. The male gear, the fixed ring gear is fixed in the second opening of the connecting seat, and the fixed ring gear and the first planet carrier are used to limit the position of the second planet carrier which is sleeved in the connecting seat. By using the arrangement of the inner ring tooth portion of the fixed ring gear, the second planetary gear provided with the second planet carrier by the inner ring tooth portion can also be used as the mesher. The electric and pneumatic tool transmission structure according to claim 1, wherein the first engaging portion is a limit engaging tooth provided on an outer periphery of the transmission ring gear, and the second engaging portion is provided in the The fixed clamping teeth behind the inner wall of the connecting seat, and the fixed clamping teeth are used to clamp the limit clamping teeth under the normal state that the electric and pneumatic tools are in a low-speed and high-torque mode, so that the transmission gear ring cannot In this low-speed, high-torque mode, the first planet carrier rotates together. Through the design that the ring teeth are arranged on the front and outer periphery of the first planet carrier, the electric and pneumatic tools can be used in all manner. The knob drives the transmission gear ring forward through the traction member to achieve a smooth switching in the use mode. The electric and pneumatic tool transmission structure according to claim 1, wherein the first engaging portion is a limit engaging tooth provided on an outer periphery of the transmission ring gear, and the second engaging portion is provided in the The fixed clamping teeth in front of the inner wall of the connecting seat, and the fixed clamping teeth are used to clamp the limit clamping teeth under the normal state that the electric and pneumatic tools are in a low speed and high torque mode, so that the gear ring cannot In this low-speed, high-torque mode, the first planetary carrier rotates together. Through the design that the ring teeth are arranged on the outer periphery of the first planetary carrier, the electric and pneumatic tools can be used. The knob drives the speed-change gear ring through the traction member to reach a smooth switching in the use mode. The electric and pneumatic tool transmission structure according to claim 1, wherein the first engaging portion is a limiting block protruding from the rear end of the transmission ring gear, and the second engaging portion is protruding from the Fix the fixed clamping block at the front end of the ring gear, and use the fixed clamping block to clamp the limit clamping block under the normal state that the electric and pneumatic tools are in a low-speed, high-torque mode, so that the gear shifting ring cannot In the mode of low speed and high torque, the first planet carrier rotates together. Through the design that the ring gear is arranged on the front and outer periphery of the first planet carrier, the electric and pneumatic tools can use the The knob drives the transmission gear ring forward through the traction member to achieve a smooth switching in the use mode. The electric and pneumatic tool transmission structure according to claim 1, wherein the first engaging portion is a limiting block protruding from the front end of the gear ring, and the second engaging portion is protruding from the The fixed clamping block at the second end of the machine head is used to hold the limiting clamping block under the normal state that the electric and pneumatic tools are in a low-speed and high-torque mode, so that the transmission gear ring cannot be in the In the mode of low speed and high torque, the first planet carrier rotates together. Through the design that the ring teeth are arranged on the outer periphery of the first planet carrier, the electric and pneumatic tools can use the The knob drives the speed-change gear ring through the traction member to reach a smooth switching in the use mode. The electric and pneumatic tool transmission structure according to claim 1, wherein a disk-shaped cover is further incorporated in the second opening of the connection seat, and the fixed ring gear is blocked by the combination of the cover. It is released from the second opening, and a through hole is penetrated in the center of the cover. The electric and pneumatic tool transmission structure according to claim 1, wherein the first coupling section and the second coupling section are provided with internal and external threads. The electric and pneumatic tool transmission structure according to claim 1, wherein the driven part is a plurality of convex buttons provided on the outer periphery of the collar, and the driving part is capable of providing the convex buttons during operation. Make following spiral grooves.