A brushless motor lithium-powered ratchet wrench with controllable torque

Abstract

The utility model discloses a controllable torque brushless motor lithium ratchet wrench, comprising a shell, a motor, a torque adjustment component, and a ratchet component. The output end of the ratchet component is provided with a protection component, and the protection group comprises a first connecting column and a second connecting column. The first connecting column is installed at the output end of the ratchet component, and a mounting hole is provided on the surface of the first connecting column along its radial direction, a spring is provided in the mounting hole, and a limiting bead is provided at the end of the spring; a connecting groove is provided on the side wall of the second connecting column, and a limiting groove is provided in the connecting groove. The second connecting column is connected to the first connecting column through the connecting groove, and the limiting bead on the first connecting column abuts against the limiting groove through the spring, and a connecting head is provided at the end of the second connecting column away from the first connecting column, and the connecting head passes through the shell; the utility model discloses a controllable torque brushless motor, comprising a protection component, a first connecting column and a second connecting column, and a protection component, wherein the first connecting column and the second connecting column are provided with a connecting head at the end away from the first connecting column, and the connecting head passes through the shell; the utility model discloses a controllable torque brushless motor, comprising a protection component, a first connecting column and a second connecting column, and a protection component, wherein the first connecting column and the second connecting column are provided with a connecting head ... first connecting column and a second connecting column, and a first connecting column and a second connecting column, and a first

Description

Technical Field

[0001] The utility model relates to a lithium-electric ratchet wrench, in particular to a lithium-electric ratchet wrench with a brushless motor capable of controlling torque. Background Art

[0002] An electric ratchet wrench is an electric tool that is generally used to tighten or loosen bolts or nuts. Compared with ordinary ratchet wrenches, it combines electric drive and can tighten or loosen bolts or nuts quickly and efficiently.

[0003] In the prior art, for example, an explosion-proof electric ratchet wrench with publication number CN219704921U comprises a wrench arm, a top support plate is welded to the top of the wrench arm, a driving motor is fixedly mounted on one end of the top support plate, a ratchet housing is arranged on the other end of the top support plate, a rotating ring rotates inside the ratchet housing, a mounting shaft is fixedly connected to the center of one end of the rotating ring, one end of the mounting shaft passes through the outer end of the ratchet housing, and a rotating ring rotates inside the ratchet housing; the explosion-proof electric ratchet wrench, through the arrangement of the rotating ring, the adjusting telescopic plate, the limit plate and the anti-slip protrusion, can facilitate the user to adjust the inner diameter formed between the fifteen adjusting telescopic plates according to the size of the bolt or nut through the control button, so that the fifteen adjusting telescopic plates can completely fix the bolt or nut to facilitate the rotation of the bolt or nut.

[0004] With regard to the above-mentioned prior art, the following defects exist during use: for example, after the electric ratchet wrench tightens the nut, if the user does not discover and turn off the electric ratchet wrench in time, the ratchet wrench will continue to tighten the nut due to the continuous rotation of the driving device, but the connector cannot rotate because the nut has been tightened. In this case, the motor is easily damaged due to overload and heating of the motor. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a brushless motor lithium-electric ratchet wrench with controllable torque, which can reduce the damage of the driving motor.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is as follows: it includes a shell, a motor, a torque adjustment component, and a ratchet component, the motor is installed in the shell, and a protective component is provided at the output end of the ratchet component, and the protective component includes a first connecting column and a second connecting column, the first connecting column is installed at the output end of the ratchet component, and a mounting hole is provided on the surface of the first connecting column along its radial direction, a spring is provided in the mounting hole, and a limiting bead is provided at the end of the spring, a connecting groove is provided on the side wall of the second connecting column, and a limiting groove is provided in the connecting groove, the second connecting column is connected to the first connecting column through the connecting groove, the limiting bead on the first connecting column abuts against the limiting groove through the spring, and the second connecting column is provided with a connecting head at the end away from the first connecting column, and the connecting head passes through the shell.

[0007] A further preferred solution of the utility model is: a noise reduction sleeve is provided at the output end of the motor, the noise reduction assembly includes a noise reduction sleeve, the noise reduction sleeve is installed on the output end of the motor, and the noise reduction sleeve is made of rubber; a first bearing, the first bearing is installed in the noise reduction sleeve, and the first bearing is connected to the output end of the motor.

[0008] A further preferred scheme of the utility model is: a charging hole is opened on the shell, and a power-off component is arranged in the charging hole, and the power-off component includes a charging column, and the charging column is installed in the charging hole; a push plate, the push plate is slidably installed on the charging column, and the push plate can move in the charging hole; an electric push rod, the electric push rod is installed in the shell, and the telescopic end of the electric push rod is inserted into the charging hole and connected with the push plate; a data processing device, and a battery power detection device is provided in the data processing device; a battery, the battery is installed in the shell, and the battery is electrically connected to the connecting column, the electric push rod and the data processing device respectively.

[0009] A further preferred solution of the utility model is that the motor is a dual-axis motor, and a fan blade is arranged on the output end of the motor away from the torque adjustment component.

[0010] A further preferred solution of the utility model is that a second bearing is sleeved on the second connecting column.

[0011] A further preferred solution of the utility model is that a non-slip layer is provided on the surface of the handle of the shell.

[0012] A further preferred solution of the utility model is that a screw rod is arranged at one end of the second connecting column close to the connecting head, and a screw hole for threaded connection with the screw rod is arranged on the connecting head.

[0013] Compared with the prior art, the advantage of the present invention is that when the nut is tightened, due to the setting of the protective component, the ratchet component cannot continue to drive the connecting head to rotate, which can prevent the motor from heating up due to excessive load, thereby reducing the problem of motor damage, thereby extending the service life of the ratchet wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0015] Figure 1 It is a front view of the utility model;

[0016] Figure 2 It is a rear view of the utility model;

[0017] Figure 3 It is an isometric view of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the protection component in the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the power-off component of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the connector in the utility model;

[0022] Figure 8 It is a structural schematic diagram of the noise reduction component in the utility model.

[0023] In the figure: 1. shell; 2. connector; 21. screw hole; 3. anti-skid layer; 4. charging hole; 5. power-off assembly; 51. charging column; 52. push plate; 53. electric push rod; 54. battery; 55. data processing device; 6. motor; 7. torque adjustment assembly; 8. ratchet assembly; 9. protection assembly; 91. first connecting column; 92. second connecting column; 93. mounting hole; 94. spring; 95. connecting groove; 96. limit bead; 97. limit groove; 10. noise reduction assembly; 102. first bearing; 101. noise reduction sleeve; 11. fan blade; 12. second bearing; 13. screw. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0025] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0026] This embodiment mainly describes the structure of a brushless motor lithium-powered ratchet wrench with controllable torque, as follows:

[0027] like Figure 1-Figure 5 As shown, a controllable torque brushless motor lithium ratchet wrench includes a housing 1, a motor 6, a torque adjustment component 7, and a ratchet component 8, wherein the motor 6 is installed in the housing 1, the torque adjustment component 7 is connected to the output end of the motor 6, and the output end of the torque adjustment component 7 is connected to the ratchet component 8; a protective component 9, the protective component 9 is installed at the output end of the ratchet component 8, and the output end of the ratchet component 8 is provided with the protective component 9, the protective component 9 includes a first connecting column 91 and a second connecting column 92, the first connecting column 91 is installed at the output end of the ratchet component 8, and the second connecting column 92 is installed at the output end of the ratchet component 8. A mounting hole 93 is provided on the surface of a connecting column 91 along its radial direction, a spring 94 is provided in the mounting hole 93, a limiting bead 96 is provided at the end of the spring 94, a connecting groove 95 is provided on the side wall of the second connecting column 92, a limiting groove 97 is provided in the connecting groove 95, the second connecting column 92 is connected to the first connecting column 91 through the connecting groove 95, the limiting bead 96 on the first connecting column 91 is abutted against the limiting groove 97 through the spring 94, and the second connecting column 92 is provided with a connecting head 2 at the end away from the first connecting column 91, and the connecting head 2 passes through the shell 1.

[0028] When working, firstly, a sleeve matching the nut to be tightened or loosened is installed on the connector 2, and then the ratchet wrench is started. When the ratchet wrench is started, the motor 6 starts to rotate, and the torque adjustment component 7 at the output end of the motor 6 works. At the same time, as the torque adjustment component 7 works, the output end of the torque adjustment component 7 drives the ratchet component 8 to work, and finally the output end of the ratchet component 8 drives the connector 2 to rotate through the protective component 9, so that the sleeve installed on the connector 2 can tighten or loosen the nut;

[0029] Among them, when the nut is tightened, due to the setting of the protective component 9, the ratchet component 8 can no longer drive the connector 2 to rotate, so that the motor 6 can be prevented from heating up due to excessive load, thereby reducing the problem of damage to the motor 6, thereby extending the service life of the ratchet wrench.

[0030] When the motor 6 continues to work after the nut is tightened, the protective component 9 starts to work. When the protective component 9 starts to work, the second connecting column 92 is connected to the connecting head 2, but the connecting head 2 cannot rotate because the nut has been tightened. In this way, as the first connecting column 91 is driven to rotate by the ratchet assembly 8, the limiting bead 96 abutting against the limiting groove 97 disengages from the limiting groove 97, so that the first connecting column 91 no longer drives the second connection to rotate, so that the motor 6 idles, thereby avoiding the problem of damage to the motor 6 due to overload and heating, thereby extending the service life of the ratchet wrench. When the connecting head 2 is separated from the sleeve or the motor 6 is turned off, the setting of the spring 94 can push the limiting bead 96 into the limiting groove 97, so that the first connecting column 91 can drive the second connecting column 92 to rotate, so that the wrench can be used again, and the setting of multiple mounting holes 93, springs 94 and limiting beads 96 can improve the reliability of the protective component 9.

[0031] The second connecting column 92 is sleeved with a second bearing 12, the inner ring of the second bearing 12 is connected to the second connecting column 92, and the outer ring of the second bearing 12 is connected to the housing 1, so that when the second connecting column 92 rotates, the second connecting column 92 can rotate better.

[0032] like Figure 4-Figure 8 As shown, a noise reduction component 10 is provided on the output end of the motor 6, and the noise reduction component 10 includes a noise reduction sleeve 101, which is installed on the output end of the motor 6 and is made of rubber; a first bearing 102, which is installed in the noise reduction sleeve 101 and is connected to the output end of the motor 6.

[0033] By sleeved a noise reduction sleeve 101 made of rubber on the output end of the motor 6, the vibration generated by the motor 6 during rotation can be reduced, thereby reducing the noise of the motor 6 during operation. The provision of the first bearing 102 can enable the output end of the motor 6 to rotate better, while also avoiding friction between the noise reduction sleeve 101 and the output end of the motor 6, thereby extending the service life of the noise reduction sleeve 101.

[0034] The motor 6 is a dual-axis motor 6 , and a fan blade 11 is provided on the output end of the motor 6 on the side away from the torque adjustment component 7 . The fan blade 11 can be used to cool the motor 6 .

[0035] The handle of the housing 1 is provided with an anti-slip layer 3 .

[0036] By providing the anti-skid layer 3 at the handle, the problem of the handle slipping when the user is in use can be reduced.

[0037] The second connection column 92 is provided with a screw rod 13 at one end close to the connection head 2 , and the connection head 2 is provided with a screw hole 21 for screwing with the screw rod 13 .

[0038] When the connector 2 needs to be replaced, the connector 2 is rotated to screw the screw 13 connected to the connector 2 out of the screw hole 21 , thereby facilitating the replacement of the connector 2 .

[0039] like Figure 4 and Figure 6 As shown, a charging hole 4 is opened on the shell 1, and a power-off component 5 is arranged in the charging hole 4. The power-off component 5 includes a charging column 51, and the charging column 51 is installed in the charging hole 4; a push plate 52, the push plate 52 is slidably installed on the charging column 51, and the push plate 52 can move in the charging hole 4; an electric push rod 53, the electric push rod 53 is installed in the shell 1, and the telescopic end of the electric push rod 53 passes through the charging hole 4 and is connected with the push plate 52; a data processing device 55, and a battery power detection device is arranged in the data processing device 55; a battery 54, the battery 54 is installed in the shell 1, and the battery 54 is electrically connected to the charging column 51, the electric push rod 53 and the data processing device 55 respectively.

[0040] When the ratchet wrench is charging, the data processing device 55 cooperates with the battery power detection device to detect the capacity of the battery 54. When the battery 54 is fully charged, the battery power detection device feeds back a signal to the data processing device 55, and then the data processing device 55 starts the electric push rod 53 to extend the telescopic end of the electric push rod 53, so that the telescopic end of the electric push rod 53 can push the push plate 52 to move in the charging hole 4, so that the charging head connected to the charging column 51 can be pushed out of the charging hole 4, thereby avoiding damage due to overcharging, thereby extending the service life of the battery 54. When the battery 54 is running low on power, the electric push rod 53 starts again, and the telescopic end of the electric push rod 53 begins to shorten, driving the push plate 52 to retract into the charging hole 4, so that it is convenient to charge the battery 54 again. The data processing device 55 and the battery power detection device therein are mature existing technologies, so they are not described in detail in this application.

[0041] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0042] The above is a detailed introduction to a controllable torque brushless motor lithium-powered ratchet wrench provided by the utility model. This article uses specific examples to illustrate the principle and implementation of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A controllable torque brushless motor lithium ratchet wrench, comprising a housing, a motor, a torque adjustment assembly, and a ratchet assembly, wherein the motor is installed in the housing, the torque adjustment assembly is connected to the output end of the motor, and the output end of the torque adjustment assembly is connected to the ratchet assembly, characterized in that: A protective assembly is provided at the output end of the ratchet assembly, and the protective assembly includes a first connecting column and a second connecting column, the first connecting column is installed at the output end of the ratchet assembly, a mounting hole is provided on the surface of the first connecting column along its radial direction, a spring is provided in the mounting hole, a limiting bead is provided at the end of the spring, a connecting groove is provided on the side wall of the second connecting column, a limiting groove is provided in the connecting groove, the second connecting column is connected to the first connecting column through the connecting groove, the limiting bead on the first connecting column abuts against the limiting groove through the spring, and a connecting head is provided at the end of the second connecting column away from the first connecting column, and the connecting head passes through the shell.

2. The controllable torque brushless motor lithium-powered ratchet wrench according to claim 1, characterized in that: A noise reduction component is provided on the output end of the motor, and the noise reduction component includes A noise reduction sleeve, which is mounted on the output end of the motor and is made of rubber; A first bearing, wherein the first bearing is installed in a noise reduction sleeve, and the first bearing is connected to an output end of the motor.

3. The controllable torque brushless motor lithium-powered ratchet wrench according to claim 1, characterized in that: The shell is provided with a charging hole, the charging hole is provided with a power-off component, the power-off component includes a charging column, and the charging column is installed in the charging hole; A push plate, the push plate is slidably mounted on the charging column, and the push plate can move in the charging hole; An electric push rod, the electric push rod is installed in the housing, and the telescopic end of the electric push rod is inserted into the charging hole and connected to the push plate; A data processing device, wherein the data processing device is provided with a battery power detection device; A storage battery is installed in the shell, and the storage battery is electrically connected to the charging column, the electric push rod and the data processing device respectively.

4. The torque controllable brushless motor lithium-powered ratchet wrench according to claim 1, characterized in that: The motor is a dual-shaft motor, and a fan blade is arranged on the output end of the motor on the side away from the torque adjustment component.

5. The controllable torque brushless motor lithium-powered ratchet wrench according to claim 1, characterized in that: The second connecting column is sleeved with a second bearing.

6. The torque controllable brushless motor lithium-powered ratchet wrench according to claim 1, characterized in that: The surface of the handle of the shell is provided with an anti-slip layer.

7. The controllable torque brushless motor lithium-powered ratchet wrench according to claim 1, characterized in that: The second connecting column is provided with a screw rod at one end close to the connecting head, and the connecting head is provided with a screw hole for threaded connection with the screw rod.

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