CN216229104U

CN216229104U - Clutch mechanism of electric tool with improved structure

Info

Publication number: CN216229104U
Application number: CN202121985385.3U
Authority: CN
Inventors: 林杨丽珠
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-04-08
Anticipated expiration: 2031-08-23

Abstract

A clutch mechanism of electric tool with improved structure is composed of a main drive shaft, a clutch mechanism with a toothed ring fixed to machine body, a clutch disk connected to main drive shaft, a sun gear set and a planetary gear set in the internal ring of toothed ring, and a torsion regulating unit with a fixed sleeve fixed to toothed ring, a regulating sleeve screwed in front of fixed sleeve, a cap, a second spring and a bearing ring, which are sequentially sleeved on main drive shaft from front to back, the distance between the cap and the bearing ring is changed through the bolt. The electric tool is convenient to use due to the adjustable torsion.

Description

Clutch mechanism of electric tool with improved structure

Technical Field

The present invention relates to an electric tool, and more particularly, to a clutch mechanism of an electric tool with an improved structure for quickly locking or unlocking a screw, a nut, or other components.

Background

An electric tool such as an electric screw driver mainly utilizes an electric motor to drive a screw head to rotate through a transmission module so as to further lock and fix parts such as a screw, a nut and the like on a workpiece or smoothly unscrew the parts such as the screw, the nut and the like from the workpiece and then take the parts down.

A conventional electric screwdriver generally includes a main shaft formed by connecting a plurality of rod bodies, one end of the main shaft is connected to a motor, and the other end of the main shaft is connected to a clutch mechanism, the clutch mechanism is installed in a sleeve, and the clutch mechanism includes a plurality of clutch discs and a gear ring structure for connecting and driving the clutch discs; when the tool assembly is used, the motor drives the spindle to rotate, the gear ring is driven to drive the clutch disc to rotate, the clutch disc can drive the action end used for being connected with the tool assembly to act, and the tool assembly (such as a screw, a nut and other parts) can be screwed tightly or unscrewed through the rotation of the action end.

However, the known structure as described above still has the following problems in practical applications: the sleeve, the rod piece, the clutch mechanism, the clutch disc, the gear ring and other components of the electric screw driver are all made of steel materials after being processed, so that the electric screw driver has the problem that the whole weight is heavy and the requirement of light weight cannot be met; and (II) the main shaft is connected by using excessive rod bodies, so that the driving torque cannot be too large, and the main shaft is designed in a sectional manner, so that abrasion or breakage is easily caused.

Therefore, the inventor of the present invention has thought and created the idea that the utility model is developed by designing through years of experience, and through many studies and trials of sample tests and many correction and improvement.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved are as follows:

the known electric screw driver is heavy and cannot meet the requirement of light weight, which is a technical problem to be solved.

The technical characteristics of solving the problems are as follows:

the utility model relates to a clutch mechanism of an electric tool with an improved structure, which comprises: a transmission main shaft, a clutch mechanism and a torsion adjusting unit, wherein one end of the transmission main shaft is connected with a motor arranged in the body of the electric tool through the clutch mechanism, the other end is provided with a sliding sleeve, so that various tools can be inserted into the action end of the sliding sleeve arranged on the transmission main shaft and then driven by the transmission main shaft to rotate, a first spring which can actively push the sliding sleeve forward under the normal state is supported between the transmission main shaft and the sliding sleeve, so that the tools inserted in the action end of the transmission main shaft can be clamped by the sliding sleeve all the time by utilizing the retention of the elastic force of the first spring without worrying about random loosening, the clutch mechanism is provided with a gear ring fixed on the body, the front end of the gear ring is provided with a clutch disc connected with the transmission main shaft, and the inner ring part of the gear ring is provided with a sun gear set and a planetary gear set, the electric tool can be selected from two power modes of low rotating speed, high torsion, high rotating speed and low torsion by the mutual meshing of the gear ring, the sun gear set and the planetary gear set and the meshing or separation of the clutch disc in the speed changing process, the torsion adjusting unit is provided with a fixed sleeve locked on the gear ring, an adjusting sleeve is arranged in the front of the fixed sleeve in a screw group way, a cap, a second spring and a bearing ring are sequentially sleeved on the transmission main shaft from front to back in the adjusting sleeve, the cap and the bearing ring are used for supporting and supporting two ends of the second spring, a plurality of bolts penetrating through the fixed sleeve are utilized, two ends of the bolts simultaneously abut against the sealing surface and the cap in front of the adjusting sleeve, and the distance between the cap and the bearing ring can be changed through the bolts through the forward and reverse screw rotation of the adjusting sleeve on the fixed sleeve, the torque force exerted on the transmission main shaft by the second spring can be synchronously changed, and the fixed sleeve and the adjusting sleeve are made of aluminum alloy, so that the whole weight of the electric tool can be lighter, and the requirement of light weight can be relatively met; therefore, the clutch mechanism of the electric tool with the improved structure can be formed.

Efficacy against the prior art:

in the clutch mechanism of the electric tool with the improved structure, the fixed sleeve, the adjusting sleeve and even the gear ring are all made of aluminum alloy, so that the whole weight of the electric tool can be lighter, and the requirement of light weight can be relatively met.

In the clutch mechanism of the electric tool with the improved structure, the transmission main shaft does not need to be jointed by a plurality of rod bodies, so that the output torque can be larger, and the failure and the damage are not easy to happen.

And the bolt is used for controlling the compression or elastic expansion of the second spring, so that the specific effect of simplifying the structure of a torque force adjusting unit on the electric tool is achieved.

Drawings

Fig. 1 is a perspective assembly view of the present invention.

Fig. 2 is an exploded perspective view of the present invention.

Fig. 3 is an assembled cross-sectional view of the present invention.

FIG. 4 is a combined cross-section and partial enlarged view of another angle of the present invention.

Symbolic illustration in the drawings:

10 driving the main shaft; 11, a sliding sleeve; 12 a first spring; 20 a clutch mechanism; 21, a toothed ring; 22 a clutch plate; 23 a sun gear set; 24 planetary gear sets; 30 a torsion adjusting unit; 31 fixing the sleeve; 311 scales; 32 an adjustment sleeve; 321 a closed face; 33 a cap; 34 a second spring; 35 a bearing ring; 36 a bolt; 40 fuselage.

Detailed Description

For a better understanding and appreciation of the objects, features, and advantages of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings in which:

generally, according to the present invention, as shown in fig. 1 to 4, it comprises: a transmission main shaft 10, a clutch mechanism 20 and a torque adjusting unit 30, wherein one end of the transmission main shaft 10 is connected with a motor (not shown) arranged inside a machine body 40 of the electric tool through the clutch mechanism 20, the other end is provided with a sliding sleeve 11, so that various tools can be inserted into an action end of the sliding sleeve 11 arranged on the transmission main shaft 10 and then driven to rotate by the transmission main shaft 10, a first spring 12 which can actively push the sliding sleeve 11 forward under a normal state is supported between the transmission main shaft 10 and the sliding sleeve 11, so that the tools inserted into the action end of the transmission main shaft 10 can be clamped by the sliding sleeve 11 all the time by utilizing the elastic force of the first spring 12, and can not be loosened freely, the clutch mechanism 20 is provided with a gear ring 21 fixed on the machine body 40, the front end of the gear ring 21 is provided with a clutch disc 22 connected with the transmission main shaft 10, the inner ring of the ring gear 21 is provided with a sun gear set 23 and a planetary gear set 24, the ring gear 21, the sun gear set 23 and the planetary gear set 24 are engaged with each other, and the clutch disc 22 is engaged with or disengaged from each other during speed changing, so that the electric tool can have at least two power modes of low rotation speed, high torque, high rotation speed and low torque to select, the torque adjusting unit 30 has a fixed sleeve 31 locked on the ring gear 21, an adjusting sleeve 32 is screwed in front of the fixed sleeve 31, a cap 33, a second spring 34 and a bearing ring 35 are provided inside the fixed sleeve 31, the cap 33 and the bearing ring 35 are sequentially sleeved on the transmission main shaft 10 from front to back, the two ends of the second spring 34 are supported by using a plurality of pins 36 penetrating through the fixed sleeve 31, and the two ends of the pins 36 are supported on the sealing surface 321 and the cap 33 in front of the adjusting sleeve 32, the distance between the cap 33 and the bearing ring 35 can be changed by the bolt 36 through the forward and reverse screwing of the adjusting sleeve 32 on the fixed sleeve 31, so that the torque force exerted on the transmission main shaft 10 by the second spring 34 can be synchronously changed, the fixed sleeve 31 and the adjusting sleeve 32 are made of aluminum alloy, the overall weight of the electric tool can be lighter, and the requirement of light weight can be met relatively.

The present invention provides a clutch mechanism of an electric tool with an improved structure, wherein the tool inserted on the action end of the transmission main shaft 10 is a sub-tool head.

The utility model provides a clutch mechanism of an electric tool with an improved structure, wherein a gear ring 21 is made of aluminum alloy.

The utility model provides a clutch mechanism of an electric tool with an improved structure, wherein at least one bearing which is convenient for providing rotation for a transmission main shaft 10 can be sleeved in a gear ring 21.

The utility model provides a clutch mechanism of an electric tool with an improved structure, wherein, the periphery of a fixed sleeve 31 is provided with a scale 311, so that when the torque is adjusted, the scale 311 is used for identifying a user.

The utility model provides a clutch mechanism of an electric tool with an improved structure, wherein four bolts 36 are arranged between a closed surface 321 of an adjusting sleeve 32 and a cap 33.

The clutch mechanism of the electric tool with the improved structure has the following characteristics: the fixing sleeve 31, the adjusting sleeve 32 and even the gear ring 21 are made of aluminum alloy, so that the overall weight of the electric tool can be lighter, and the requirement of light weight can be relatively met; secondly, the transmission main shaft 10 does not need to be jointed by a plurality of rod bodies, so that the output torque can be larger, and the failure and the damage are not easy to happen; third, the distance between the cap 33 and the bearing ring 35 is changed by the forward and reverse rotation of the adjusting sleeve 32 on the fixing sleeve 31, so that the magnitude of the torque exerted by the second spring 34 on the transmission main shaft 10 can be synchronously changed, the use of the electric tool can be more handy due to the adjustable torque, and the bolt 36 is used for controlling the compression or elastic expansion of the second spring 34, which has the specific effect of simplifying the structure of the torque adjusting unit 30 on the electric tool.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the utility model; therefore, all the equivalent changes and modifications made according to the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A clutch mechanism of an electric tool with an improved structure comprises: a transmission main shaft, a clutching mechanism and a torsion adjusting unit, which is characterized in that:

one end of the transmission main shaft is connected with a motor arranged in the body of the electric tool through the clutch mechanism, the other end of the transmission main shaft is provided with a sliding sleeve, so that various tools can be inserted into the action end of the sliding sleeve arranged on the transmission main shaft and then driven by the transmission main shaft to rotate, a first spring which actively pushes the sliding sleeve forwards in a normal state is supported between the transmission main shaft and the sliding sleeve, and the tools inserted into the action end of the transmission main shaft are clamped by the sliding sleeve by utilizing the retention of the elasticity of the first spring;

the clutch mechanism is provided with a gear ring fixed on the machine body, the front end of the gear ring is provided with a clutch disc connected with the transmission main shaft, the inner ring part of the gear ring is internally provided with a sun gear set and a planetary gear set, and the clutch disc is matched with the engagement or the separation of the clutch disc during speed change through the mutual meshing of the gear ring, the sun gear set and the planetary gear set, so that the electric tool at least has two power modes of low rotating speed, high torque force, high rotating speed and low torque force for selection;

the torque force adjusting unit is provided with a fixed sleeve fixedly locked on the gear ring, an adjusting sleeve is arranged in the front of the fixed sleeve in a screw group mode, a cap, a second spring and a bearing ring are arranged in the adjusting sleeve, the cap, the second spring and the bearing ring are sequentially sleeved on the transmission main shaft from front to back, the cap and the bearing ring are used for supporting and supporting two ends of the second spring, a plurality of bolts penetrating through the fixed sleeve are utilized, two ends of the bolts simultaneously abut against a sealing surface and the cap in front of the adjusting sleeve, the distance between the cap and the bearing ring is changed through the bolts through forward and reverse screw rotation of the adjusting sleeve sleeved on the fixed sleeve, the torque force exerted on the transmission main shaft by the second spring is synchronously changed, and the fixed sleeve and the adjusting sleeve are made of aluminum alloy.

2. The improved clutch mechanism for electric tool as claimed in claim 1, wherein the tool inserted on the action end of the transmission main shaft is a sub-tool bit.

3. The improved clutch mechanism for electric tool as claimed in claim 1, wherein the toothed ring is made of aluminum alloy.

4. The improved clutch mechanism of electric tool as claimed in claim 1, wherein the sleeve has a scale on its periphery for providing the user with identification when adjusting the torque.

5. The improved clutch mechanism for electric tool as claimed in claim 1, wherein four of said pins are disposed between the closing surface of said adjusting sleeve and said cap.