CN216229104U - Clutch mechanism of electric tool with improved structure - Google Patents

Abstract

A clutch mechanism of an electric tool with an improved structure includes a transmission spindle, a clutch mechanism and a torque adjustment unit. The clutch mechanism has a gear ring fixed on the fuselage. The front end of the gear ring is provided with a clutch plate connected with the transmission main shaft. The inner ring of the gear ring is provided with a sun gear set and a planetary gear set. The unit has a fixed sleeve locked on the gear ring, an adjustment sleeve is screwed in front of the fixed sleeve, and inside is provided with a cap, a second spring and a bearing ring which are sequentially sleeved on the transmission main shaft from front to back. By using several pins passing through the fixing sleeve, and the two ends of the pins contacting the closed surface and the cap in front of the adjusting sleeve at the same time, the forward and reverse screw rotation of the adjusting sleeve can be adjusted, and the pins can be used to change Spacing between cap and bearing ring. The use of electric tools is convenient due to the adjustable torque.

Description

Clutch mechanism of electric tool with improved structure

technical field

The utility model relates to an electric tool, in particular to a clutch mechanism of an electric tool with an improved structure, which can quickly lock in or out parts such as screws and nuts.

Background technique

Power tools such as electric screwdrivers mainly use an electric motor to drive a screw head to rotate through a transmission module, so as to further lock screws, nuts, etc. on the workpiece, or to smoothly lock the screws, nuts, etc. Nuts... and other parts are loosened from the work and then removed.

Currently known common electric screwdrivers generally include a main shaft, which is formed by connecting a plurality of rods. One end of the main shaft is connected to a motor, and the other end is connected to a clutch mechanism. The clutch mechanism is installed in a set of In the cylinder, the clutch mechanism includes several clutch discs and a gear ring structure for connecting and driving with these clutch discs; when in use, the motor drives the main shaft to rotate, and then drives the gear ring to drive the clutch disc. Rotating, the clutch plate can drive the action end for connecting the tool assembly to produce action, so that the tool assembly (such as screws, nuts, etc.) can be tightened or loosened through the rotation of the action end. .

However, the above-mentioned known structures still have the following problems in practical applications: (1) The sleeves, rods, clutch mechanisms, clutch discs, gear rings and other components of the electric screwdriver are all The steel is processed and made, so that the electric screwdriver has the problem that the overall weight is heavy and cannot meet the requirements of lightweight; (2) the main shaft is connected by too many rods, so that the driving torque cannot be too large. Furthermore, Due to the segmented design of the spindle, it is quite prone to wear or breakage.

Therefore, the inventor of the present invention has considered the idea of creation in view of this, and has designed it with many years of experience. After many discussions and sample tests, and many revisions and improvements, the present utility model is launched.

Utility model content

Technical problems to be solved:

It is known that the electric screwdriver is heavy and cannot meet the requirement of light weight, which is the technical problem to be solved.

Problem-solving technical features:

The clutch mechanism of an electric tool with an improved structure of the present invention comprises: a transmission spindle, a clutch mechanism and a torque adjustment unit, wherein one end of the transmission spindle is connected to the power tool through the clutch mechanism. The motor inside the fuselage is connected, and the other end is provided with a sliding sleeve, so that various tools can be inserted into the action end of the sliding sleeve provided by the transmission main shaft, and then driven to rotate by the transmission main shaft, and the A first spring that can actively push the sliding sleeve forward under normal conditions is supported between the transmission main shaft and the sliding sleeve, so as to utilize the retention of the elastic force of the first spring, so that the moving end of the transmission main shaft is inserted into the first spring. The tool can always be clamped by the sliding sleeve without fear of being loose at will. The clutch mechanism has a gear ring fixed on the body, and the front end of the gear ring is connected with the transmission spindle. There is a sun gear set and a planetary gear set in the inner ring part of the gear ring. By engaging or disengaging, the power tool can have at least two power modes of low speed, high torque and high speed and low torque to choose from, and the torque adjustment unit has a fixed sleeve locked on the gear ring. , There is an adjustment sleeve in the front screw group of the fixed sleeve. The inside of the adjustment sleeve is provided with a cap, a second spring and a bearing ring which are sequentially sleeved on the transmission spindle from front to back. The ring is used to provide the two ends of the second spring for support, using several pins passing through the fixing sleeve, and the two ends of the pins simultaneously abut against the closed surface in front of the adjusting sleeve and the said adjusting sleeve. On the cap, the distance between the cap and the bearing ring can be changed through the bolt through the forward and reverse screw rotation of the adjusting sleeve on the fixing sleeve, so that the second spring can be applied to the The torque on the transmission spindle can be changed synchronously, and the fixing sleeve and the adjusting sleeve are made of aluminum alloy, so that the overall weight of the power tool can be lighter, which can meet the requirements of lightweight; The clutch mechanism of the electric power tool with the improved structure can be constituted.

Efficacy compared to prior art:

(1) The clutch mechanism of the power tool with the improved structure of the present invention, the fixing sleeve, the adjusting sleeve, and even the gear ring are all made of aluminum alloy, so that the overall weight of the power tool can be lighter. Relatively able to meet the requirements of lightweight.

(2) In the clutch mechanism of the electric tool with the improved structure of the present invention, the transmission main shaft does not need to be connected with a plurality of rod bodies, so the output torque can be larger, and it is not easy to malfunction and damage.

(3) The clutch mechanism of the electric tool with the improved structure of the present utility model, which changes the distance between the cap and the bearing ring through the forward and reverse screw rotation of the adjustment sleeve on the fixed sleeve, so as to change the distance between the cap and the bearing ring. The magnitude of the torque exerted by the second spring on the transmission spindle can be changed synchronously, so that the use of the power tool can be more convenient due to the adjustable torque, and the second spring can be controlled by using the latch. Or elastically stretch, so as to have the specific effect of simplifying the structure of the torque adjustment unit on the power tool.

Description of drawings

FIG. 1 is a three-dimensional combined view of the utility model.

FIG. 2 is an exploded perspective view of the utility model.

Figure 3 is a combined cross-sectional view of the utility model.

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

Description of symbols in the attached drawings:

10 transmission main shaft; 11 sliding sleeve; 12 first spring; 20 clutch mechanism; 21 gear ring; 22 clutch plate; 23 sun gear set; 24 planetary gear set; 30 torque adjustment unit; 31 fixed sleeve; 311 scale; 32 adjustment sleeve ;321 Closing Face; 33 Cap; 34 Secondary Spring; 35 Bearing Ring; 36 Latch; 40 Body.

Detailed ways

In order to enable further understanding and understanding to the purpose, features and effects of the present utility model, please describe in detail below in conjunction with the drawings:

Generally, according to the present invention, as shown in FIG. 1 to FIG. 4 , it includes: a transmission main shaft 10 , a clutch mechanism 20 and a torque adjustment unit 30 , wherein one end of the transmission main shaft 10 passes through the The clutch mechanism 20 is connected with a motor (not shown) provided in the body 40 of the power tool, and a sliding sleeve 11 is provided at the other end, so that various tools can be inserted into the sliding sleeve provided in the drive spindle 10 After the action end of 11 is up, it is then driven to rotate by the transmission main shaft 10, and a first spring 12 is supported between the transmission main shaft 10 and the sliding sleeve 11, which can actively push the sliding sleeve 11 forward under normal conditions. , so that the tool inserted in the action end of the drive spindle 10 can always be clamped by the sliding sleeve 11 without being loose at will. The clutch mechanism 20 has a gear ring 21 fixed on the fuselage 40, the front end of the gear ring 21 is provided with a clutch plate 22 connected with the transmission main shaft 10, and a sun is arranged in the inner ring portion of the gear ring 21. The gear set 23 and a planetary gear set 24, through the mutual meshing of the ring gear 21, the sun gear set 23 and the planetary gear set 24, cooperate with the engagement or separation of the clutch plate 22 during shifting, so that the power tool is At least two power modes of low speed, high torque and high speed and low torque can be selected. The torque adjustment unit 30 has a fixed sleeve 31 locked on the toothed ring 21. The front of the fixed sleeve 31 is screwed. There is an adjusting sleeve 32, which is provided with a cap 33, a second spring 34 and a bearing ring 35 which are sequentially sleeved on the transmission spindle 10 from front to back. The cap 33 and the bearing ring 35 are used for To provide the two ends of the second spring 34 for support, several pins 36 passing through the fixing sleeve 31 are used, and the two ends of the pins 36 simultaneously abut against the closing surface 321 in front of the adjusting sleeve 32 On the cap 33, the distance between the cap 33 and the bearing ring 35 can be changed through the bolt 36 through the forward and reverse screw rotation of the adjusting sleeve 32 on the fixing sleeve 31. The torsional force exerted by the second spring 34 on the transmission spindle 10 can be changed synchronously. The fixing sleeve 31 and the adjusting sleeve 32 are made of aluminum alloy, so that the overall weight of the power tool can be lighter. , which can meet the requirements of lightweight.

The utility model provides a clutch mechanism of an electric tool with an improved structure, wherein the tool inserted on the action end of the drive spindle 10 is a sub-tool head.

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

The present invention provides a clutch mechanism of an electric tool with an improved structure, wherein at least one bearing can be sleeved inside the gear ring 21 to facilitate the rotation of the transmission spindle 10 .

The present invention provides a clutch mechanism of an electric tool with an improved structure, wherein a scale 311 is provided on the outer periphery of the fixing sleeve 31 to provide a user with the scale 311 for identification when adjusting the torque.

The present invention provides a clutch mechanism of an electric tool with an improved structure, wherein four of the latches 36 are arranged between the closing surface 321 of the adjusting sleeve 32 and the cap 33 .

The clutch mechanism of the power tool with the improved structure has the following characteristics: (1) The fixing sleeve 31, the adjusting sleeve 32, and even the gear ring 21 are all made of aluminum alloy, so that the power tool can be integrated as a whole. The weight can be lighter, which can meet the requirements of light weight; (2) The transmission main shaft 10 does not need to be joined by multiple rods, so the output torque can be larger, and it is not easy to fail and damage; (3) It passes through all The forward and reverse screw rotation of the adjusting sleeve 32 on the fixing sleeve 31 changes the distance between the cap 33 and the bearing ring 35, so that the second spring 34 is applied to the transmission shaft 10. The magnitude of the torque can be changed synchronously, so that the use of the power tool can be more convenient because of the adjustable torque, and the second spring 34 is controlled by the latch 36 to compress or elastically stretch, which is capable of turning the power tool. The structure of the torque adjustment unit 30 on the upper is more simplified, and the specific effect is further simplified.

The above is only a preferred embodiment of the present utility model, and should not limit the scope of the present utility model implementation; that is, all equivalent changes and modifications made according to the scope of the present utility model patent application should still belong to the present utility model. covered by utility model patents.

Claims (5)

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.

Images