Manual and automatic integrated wrench

Abstract

The utility model provides a manual-automatic integrated wrench, which relates to the field of maintenance tools, and comprises a sleeve, a support, an electric driving rod, a rotating arm and a wrench head, the electric driving rod is pivoted in the sleeve, the support is arranged at the top of the sleeve, the top of the rotating arm is rotatably connected to the support, the bottom end of the electric driving rod can be matched with an electric screwdriver in an inserting manner, and the wrench head is connected with the electric driving rod. The top end can drive the rotating arm to swing in a reciprocating mode through a swing mechanism, the wrench head is connected to the top of the rotating arm in a pivoted mode, and the wrench head and the rotating arm are meshed in a left-right switching mode through a ratchet mechanism. Through the arrangement of the swing mechanism and the ratchet mechanism, the spanner can drive the spanner head to rotate through the electric driving rod or directly drive the spanner head to rotate in a manual mode, manual and automatic integration is achieved, meanwhile, due to the fact that the rotating arm does reciprocating swing motion to drive the spanner head, the spanner can complete the screw turning motion without large-angle rotation, and operation is convenient. The device is suitable for various narrow spaces.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance tools, in particular to a manual-automatic wrench. Background Art

[0002] Wrenches are widely used in daily life, typically for tightening or loosening screws and nuts. Open-end wrenches are commonly used. Open-end wrenches typically allow threaded parts to be inserted through an opening on the side of the wrench. However, during tightening or loosening operations, the wrench must be removed from the threaded part after turning it a small angle, then placed back on the threaded part at a different angle to continue turning. This process often needs to be repeated multiple times until the threaded part is fully tightened or loosened, making it inconvenient to operate.

[0003] However, due to the small space in some places, the wrench cannot be rotated at a large angle, and the wrench cannot be operated manually, which is inconvenient. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a manual-automatic wrench, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a manual-automatic wrench, including a sleeve, a support, an electric drive rod, a rotating arm, and a wrench head, the electric drive rod is pivoted in the sleeve, the support is arranged at the top of the sleeve, the top of the rotating arm is rotatably connected to the support, the bottom end of the electric drive rod can be inserted and matched with an electric screwdriver, and the top end can drive the rotating arm to swing back and forth through a swing mechanism, the wrench head is pivoted to the top of the rotating arm, and the wrench head and the rotating arm are switched left and right through a ratchet mechanism.

[0008] Preferably, the ratchet mechanism includes a ratchet ring arranged in the rotating arm and a drive shaft coaxially arranged on the wrench head, a pawl is rotatably arranged on the drive shaft, ratchet parts with opposite tooth directions are arranged on both sides of the pawl, and a knob for controlling the pawl to swing to both sides is provided on the drive shaft.

[0009] Preferably, the electric drive rod includes an electric drive slot rod, a connecting rod, and a linkage rod which are sequentially connected end to end, and the end of the connecting rod is pivotally connected to the sleeve through bearings.

[0010] Preferably, the swing mechanism includes an eccentric shaft eccentrically arranged at the top of the linkage rod, and the bottom of the rotating arm is provided with an active cavity for the eccentric shaft to extend into, and the opening direction of the active cavity is consistent with the axial direction of the top rotating shaft.

[0011] Preferably, a spherical round head is provided on the top of the eccentric shaft.

[0012] Preferably, the electric drive slot rod and the connecting rod are threadedly connected.

[0013] (3) Beneficial effects

[0014] The utility model provides a manual-automatic wrench with the following beneficial effects:

[0015] 1. This manual-automatic wrench is equipped with a swing mechanism and a ratchet mechanism, so that the wrench can be driven to rotate by the electric drive rod or directly driven to rotate by manual means, realizing manual-automatic integration. At the same time, since the rotating arm drives the wrench by a reciprocating swing action, the wrench does not need to rotate at a large angle to complete the screw tightening action, and is suitable for various narrow spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an axonometric drawing of the present utility model;

[0017] Figure 2 This is a schematic diagram of the knob of the utility model;

[0018] Figure 3 It is a side sectional view of the utility model;

[0019] Figure 4 It is a half-section view of the support of the present utility model.

[0020] In the figure: 1 sleeve, 2 support, 3 electric drive rod, 4 rotating arm, 5 wrench, 6 drive shaft, 7 ratchet ring, 8 pawl, 9 ratchet part, 10 knob, 11 eccentric shaft, 12 movable cavity, 13 round head, 31 electric drive slot rod, 32 connecting rod, 33 linkage rod, 34 bearing. DETAILED DESCRIPTION

[0021] The present invention provides a manual-automatic wrench. Figure 1-4 As shown, it includes a sleeve 1, a support 2, an electric drive rod 3, a rotating arm 4, and a wrench 5.

[0022] like Figure 3 As shown, the electric drive rod 3 is pivotally connected within the sleeve 1. Specifically, the electric drive rod 3 comprises an electric drive slot rod 31, a connecting rod 32, and a linkage rod 33, connected end to end. The connecting rod 32 is pivotally connected to the sleeve 1 at both ends via bearings 34. The bottom of the electric drive slot rod 31 is provided with a slot for inserting an electric screwdriver. This slot can be a square or hexagonal slot. The electric drive slot rod 31 and the connecting rod 32 are threadedly connected, allowing the electric drive slot rod 31 to be replaced to accommodate different models of electric screwdrivers.

[0023] like Figure 1As shown, the support 2 is fixedly arranged on the top of the sleeve 1, and the rotating part at the top of the rotating arm 4 is rotatably connected to the support 2. The rotating arm 4 is similar to a crank. The rotating arm 4 can rotate around the rotating part.

[0024] like Figure 4 As shown, the top of the electric drive rod 3 drives the rotating arm 4 to swing back and forth via a swing mechanism. The swing mechanism includes an eccentric shaft 11 eccentrically positioned at the top of the linkage rod 33. The bottom of the rotating arm 4 is provided with a movable cavity 12 into which the eccentric shaft 11 extends. The movable cavity 12 extends axially and is aligned with the axis of the rotating shaft at its top. When the eccentric shaft 11 rotates, the movable cavity 12 drives the rotating arm 4 to swing back and forth with its rotating portion as the axis.

[0025] In order to reduce the friction between the eccentric shaft 11 and the movable cavity 12 , a spherical round head 13 is provided on the top of the eccentric shaft 11 .

[0026] like Figure 3-4 As shown, the wrench head 5 is pivotally connected to the top of the rotating arm 4, and the wrench head 5 and the rotating arm 4 are engaged with each other in a left-right switching manner through a ratchet mechanism.

[0027] The ratchet mechanism includes a ratchet ring 7 disposed within a rotating arm 4 and a drive shaft 6 coaxially mounted on a spanner head 5. A crescent-shaped pawl 8 is rotatably mounted on the drive shaft 6. The pawl 8 has ratchet portions 9 with teeth oriented in opposite directions on either side. A knob 10 is provided on the drive shaft 6 to control the swinging of the pawl 8. When the ratchet portions 9 on either side of the pawl 8 are parallel and symmetrical, neither ratchet portion 9 contacts the ratchet ring 7. When the knob 10 rotates the pawl 8 toward side A, the ratchet portion 9 on side B engages with the ratchet ring 7, while the ratchet portion 9 on side A does not, causing the rotating arm 4 to rotate the drive shaft 6 clockwise. When the knob 10 rotates the pawl 8 toward side B, the ratchet portion 9 on side A engages with the ratchet ring 7, while the ratchet portion 9 on side B does not, causing the rotating arm 4 to rotate the drive shaft 6 counterclockwise.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual-automatic wrench, characterized by: The utility model comprises a sleeve (1), a support (2), an electric drive rod (3), a rotating arm (4), and a wrench (5), wherein the electric drive rod (3) is pivotally connected in the sleeve (1), the support (2) is arranged at the top of the sleeve (1), the top of the rotating arm (4) is rotatably connected to the support (2), the bottom end of the electric drive rod (3) can be inserted into and matched with an electric screwdriver, and the top end can drive the rotating arm (4) to swing back and forth through a swing mechanism, the wrench (5) is pivotally connected to the top of the rotating arm (4), and the wrench (5) and the rotating arm (4) are switched left and right through a ratchet mechanism.

2. The automatic manual wrench according to claim 1, characterized in that: The ratchet mechanism comprises a ratchet ring (7) arranged in a rotating arm (4) and a drive shaft (6) coaxially arranged on a wrench head (5); a ratchet (8) is rotatably arranged on the drive shaft (6); ratchet portions (9) with teeth in opposite directions are arranged on both sides of the ratchet (8); and a knob (10) for controlling the ratchet (8) to swing to both sides is arranged on the drive shaft (6).

3. The automatic manual wrench according to claim 1, characterized in that: The electric drive rod (3) comprises an electric drive slot rod (31), a connecting rod (32), and a linkage rod (33) which are sequentially connected end to end. The connecting rod (32) is pivotally connected to the sleeve (1) at both ends via bearings (34).

4. The automatic manual wrench according to claim 3, characterized in that: The swing mechanism comprises an eccentric shaft (11) eccentrically arranged on the top of the linkage rod (33); a movable cavity (12) for the eccentric shaft (11) to extend into is provided at the bottom of the rotating arm (4); and the opening direction of the movable cavity (12) is consistent with the axial direction of the top rotating shaft.

5. The automatic manual wrench according to claim 4, characterized in that: The top of the eccentric shaft (11) is provided with a spherical round head (13).

6. The automatic manual wrench according to claim 3, characterized in that: The electric drive slot rod (31) and the connecting rod (32) are threadedly connected.

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