CN216777854U - Arm of force angle adjustment mechanism - Google Patents

Abstract

The utility model discloses a force arm angle adjusting mechanism, which is used for connecting a force arm and a main body and comprises a first angle adjusting unit and a fixing piece connected with the main body, wherein the first angle adjusting unit comprises a first locking piece, a first rotating piece and a sliding piece, the first locking piece is movably arranged on the fixing piece and can move between a first locking position and a first unlocking position, the first rotating piece is rotatably connected with the fixing piece and can rotate around a first axis relative to the fixing piece, the sliding piece is slidably arranged on the fixing piece, the force arm is connected with the first rotating piece, and the first rotating piece is in transmission connection with the sliding piece so that the sliding piece can be driven to slide relative to the fixing piece when the first rotating piece rotates around the first axis; when the first locking piece is positioned at the first locking position, the sliding piece and the fixed piece can be locked, so that the sliding piece cannot slide relative to the fixed piece; the first locking piece can release the locking of the sliding piece and the fixed piece when being positioned at the first unlocking position. The utility model has simple integral structure, convenient assembly and maintenance and greatly reduced cost.

Description

Arm of force angle adjustment mechanism

Technical Field

The utility model relates to the technical field of fitness equipment, in particular to a force arm angle adjusting mechanism.

Background

The professional fitness equipment can improve the fitness effect, prevent the user from being injured accidentally and enhance the fitness pleasure. The existing fitness equipment is provided with equipment, the purpose of exercising arm strength can be achieved by stretching a hand pull ring on a force arm, and the fitness equipment is usually further provided with a force arm angle adjusting mechanism, so that a user can conveniently adjust the angle of the force arm according to own requirements. However, the arm angle adjusting mechanism of the existing fitness equipment is complex in structure, so that the cost is high, the assembly is time-consuming and labor-consuming, and the maintenance and the replacement are inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a force arm angle adjusting mechanism for solving the technical problems.

In order to achieve the purpose, the utility model adopts the technical scheme that: a force arm angle adjusting mechanism is used for connecting a force arm and a main body and comprises a first angle adjusting unit and a fixing piece connected with the main body, wherein the first angle adjusting unit comprises a first locking piece movably arranged on the fixing piece and capable of moving between a first locking position and a first unlocking position, a first rotating piece rotatably connected with the fixing piece and capable of rotating around a first axis relative to the fixing piece, and a sliding piece slidably arranged on the fixing piece;

when the first locking piece is positioned at a first locking position, the sliding piece and the fixed piece can be locked, so that the sliding piece cannot slide relative to the fixed piece; the first locking piece can release the locking of the sliding piece and the fixed piece when being located at a first unlocking position.

Preferably, the first rotating member is a gear with a tooth portion, and the sliding member is provided with a rack which can be engaged with the tooth portion for transmission;

or, the first angle adjusting unit further comprises a transmission member, one end of the transmission member is rotatably connected with the first rotating member, the other end of the transmission member is rotatably connected with the sliding member, and the first rotating member is in transmission connection with the sliding member through the transmission member.

Preferably, the first locking piece is arranged on the fixing piece in a sliding or rotating mode.

Preferably, a plurality of first slots or first jacks are arranged on the sliding piece at intervals along the sliding direction of the sliding piece; when the first locking piece is positioned at a first locking position, one end of the first locking piece is alternatively in inserting fit with the first slot or the first jack so as to lock the sliding piece and the fixed piece; when the first locking piece is located at a first unlocking position, one end of the first locking piece exits the first slot or the first jack;

or, a plurality of first convex parts are arranged on the sliding part at intervals along the sliding direction of the sliding part, and a first slot is arranged on the first locking part; when the first locking piece is located at the first locking position, the first slot is selectively in inserted connection with the first convex part to lock the sliding piece and the fixing piece; when the first locking piece is located at the first unlocking position, the first convex part exits the first slot.

Preferably, a first elastic piece is arranged between the first locking piece and the fixed piece, and the first locking piece can be reset from a first unlocking position to a first locking position under the action of the first elastic piece; alternatively, the first locking member can be reset from the first unlocked position to the first locked position under its own weight.

Preferably, the first angle adjusting unit further comprises a first key slidably disposed on the main body, one of the first key and the first locking member is provided with a first driving inclined plane, and the other of the first key and the first locking member is rotatably provided with a first roller; when the first key is pressed, the first driving inclined plane is in butt fit with the first roller to drive the first locking piece to slide from the first locking position to the first unlocking position.

Preferably, the device further comprises a second angle adjusting unit, the second angle adjusting unit comprises a second locking piece movably arranged on the fixed piece and capable of moving between a second locking position and a second unlocking position relative to the fixed piece, and a second rotating piece rotatably arranged on the fixed piece and capable of rotating around a second axis relative to the fixed piece, the first axis is different from the second axis, and the first rotating piece is rotatably connected with the second rotating piece and capable of rotating around the first axis relative to the second rotating piece;

when the second locking piece is positioned at a second locking position, the second rotating piece and the fixed piece can be locked, so that the second rotating piece cannot rotate relative to the fixed piece; when the second locking piece is located at a second unlocking position, the locking of the second rotating piece and the fixing piece can be released, and the force arm can drive the second rotating piece to rotate around the second axis through the first rotating piece.

Preferably, the sliding member is further rotatable around the second axis relative to the fixed member, and the first rotating member can drive the sliding member to rotate around the second axis through the second rotating member.

Preferably, the first axis and the second axis are perpendicular to each other.

Preferably, a plurality of second slots or second jacks are arranged on the second rotating part at intervals along the circumferential direction of the second rotating part; when the second locking piece is located at a second locking position, one end of the second locking piece is alternatively inserted and matched with the second slot or the second insertion hole so as to lock the second rotating piece and the fixing piece; when the second locking piece is located at a second unlocking position, one end of the second locking piece is withdrawn from the second slot or the second jack;

or a plurality of second convex parts are arranged on the second rotating part at intervals along the circumferential direction of the second rotating part, and a second slot is arranged on the second locking part; when the second locking piece is positioned at a second locking position, the second slot is alternatively matched with the second convex part in an inserting manner so as to lock the second rotating piece and the fixing piece; when the second locking piece is located at a second unlocking position, the second convex part is withdrawn from the second slot.

Compared with the prior art, the utility model has the following beneficial effects:

according to the force arm angle adjusting mechanism, when the first locking member is located at the first locking position, the first locking member can lock the sliding member and the fixing member, so that the sliding member cannot slide relative to the fixing member, the first rotating member cannot rotate around the first axis relative to the fixing member, the force arm cannot rotate around the first axis relative to the main body, and the force arm is fixed; when the first locking member is located at the first unlocking position, the first locking member can unlock the sliding member and the fixed member, so that the sliding member can slide relative to the fixed member, the first rotating member can rotate around the first axis relative to the fixed member, and the force arm can rotate around the first axis relative to the main body to adjust the angle of the force arm. The utility model has simple integral structure, convenient assembly and maintenance and greatly reduced cost.

Drawings

FIG. 1 is a schematic perspective view of a first embodiment of the present invention (showing the moment arm in an initial position, the first locking member in a first locking position, and the second locking member in a second locking position);

FIG. 2 is an elevational view of a first embodiment of the utility model (showing the moment arm in the initial position, the first locking member in the first locked position, and the second locking member in the second locked position);

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a partial cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a side view of a first embodiment of the utility model (showing the moment arm in the initial position, the first locking member in the first locking position, and the second locking member in the second locking position);

FIG. 6 is a partial cross-sectional view taken along line C-C of FIG. 5;

FIG. 7 is an exploded view of the first embodiment of the present invention;

FIG. 8 is a perspective view of a slider according to an embodiment of the present invention;

FIG. 9 is a perspective view of a second rotatable member according to one embodiment of the present invention;

FIG. 10 is a schematic view of the first locking member in a first unlocked position and the second locking member in a second unlocked position in accordance with the embodiment of the present invention;

fig. 11 is a schematic view illustrating a moment arm of the first embodiment of the present invention rotated around a first axis to a state where a length direction thereof forms an included angle with a vertical direction;

FIG. 12 is a schematic view of the moment arm of the first embodiment of the present invention rotated around the second axis to a position where the length direction thereof forms an included angle with the vertical direction;

FIG. 13 is a partial cross-sectional view of a second embodiment of the present invention;

fig. 14 is a schematic view illustrating the moment arm of the second embodiment of the present invention rotated around the first axis to a state where the length direction thereof forms a certain angle with the vertical direction.

The reference numerals are explained below:

11-a first locking element, 12-a first rotating element, 121-a toothing, 122-a first axis, 13-a sliding element, 131-a rack, 132-a first slot, 14-a first key, 141-a first key sleeve, 142-a first push rod, 1421-a first driving ramp, 15-a first roller, 16-a first elastic element, 17-a second elastic element, 18-a rotating shaft, 19-a first guide sleeve, 10-a transmission element, 2-a fixed element, 31-a second locking element, 32-a second rotating element, 321-a second axis, 322-a second slot, 33-a second key, 331-a second key sleeve, 332-a second push rod, 3321-a second driving ramp, 34-a second roller, 35-a third elastic element, 36-fourth elastic component, 37-second guide sleeve, 4-arm of force, 5-main part.

Detailed Description

The utility model is further explained in detail with the accompanying drawings and the embodiments; however, the arm angle adjusting mechanism of the present invention is not limited to the embodiment.

Example one

Referring to fig. 1 to 12, a force arm angle adjusting mechanism of the present embodiment is used for connecting a force arm 4 and a main body 5, and includes a first angle adjusting unit and a fixing member 2 connected to the main body 5, where the first angle adjusting unit includes a first locking member 11 movably disposed on the fixing member 2 and capable of moving between a first locking position and a first unlocking position relative to the fixing member 2, a first rotating member 12 rotatably connected to the fixing member 2 and capable of rotating around a first axis 122 relative to the fixing member 2, and a sliding member 13 slidably disposed on the fixing member 2, the force arm 4 is connected to the first rotating member 12, and the first rotating member 12 is in transmission connection with the sliding member 13 so that the sliding member 13 can be driven to slide relative to the fixing member 2 when the first rotating member 12 rotates around the first axis 122;

when the first locking member 11 is located at the first locking position, the first locking member 11 can lock the sliding member 13 and the fixed member 2, so that the sliding member 13 cannot slide relative to the fixed member 2, and further the first rotating member 12 cannot rotate around the first axis 122 relative to the fixed member 2, and the force arm 4 cannot rotate around the first axis 122 relative to the main body 5, thereby fixing the force arm 4; when the first locking member 11 is located at the first unlocking position, the first locking member 11 can unlock the sliding member 13 and the fixed member 2, so that the sliding member 13 can slide relative to the fixed member 2, and further the first rotating member 12 can rotate about the first axis 122 relative to the fixed member 2, that is, the force arm 4 can rotate about the first axis 122 relative to the main body 5 to adjust the angle of the force arm 4, at this time, the force arm 4 can drive the first rotating member 12 to rotate about the first axis 122 relative to the fixed member 2, and the first rotating member 12 can drive the sliding member 13 to slide relative to the fixed member 2.

Specifically, in the present embodiment, the main body 5 is specifically a frame of the exercise apparatus; one end of the force arm 4 is fixedly connected with the first rotating part 12 through a bolt, and the other end of the force arm 4 is connected with a hand-pulling ring (not shown in the figure); the fixing piece 2 and the main body 5 are of a split structure, and the fixing piece 2 is fixedly connected with the main body 5 through bolts. In other embodiments, the fixing member and the main body may be an integral structure.

Referring to fig. 2 and fig. 6 to 11, in the present embodiment, the first rotating member 12 is a gear having a tooth portion 121, the sliding member 13 is provided with a rack 131 capable of meshing with the tooth portion 121, and the first rotating member 12 is in transmission connection with the sliding member 13 through the meshing transmission between the tooth portion 121 and the rack 131, so that the sliding member 13 can be driven to slide relative to the fixed member 2 when the first rotating member 12 rotates around the first axis 122.

Referring to fig. 2 and fig. 6 to fig. 11, in the present embodiment, the first locking member 11 is slidably disposed on the fixing member 2; a plurality of first slots 132 are formed in the sliding member 13 at equal intervals along the sliding direction thereof; when the first locking member 11 is located at the first locking position, one end of the first locking member 11 is alternatively inserted into the first slot 132 to lock the sliding member 13 with the fixing member 2; when the first locking member 11 is located at the first unlocking position, one end of the first locking member 11 exits the first slot 132 to unlock the sliding member 13 and the fixed member 2. In this embodiment, a first elastic member 16 is disposed between the first locking member 11 and the fixing member 2, and the first locking member 11 can be reset from the first unlocking position to the first locking position by the first elastic member 16. In other embodiments, the first locking member can also be rotatably arranged on the fixing member; it may also be provided that the first locking member is capable of returning from the first unlocked position to the first locked position under its own weight.

Referring to fig. 1 to fig. 11, in the present embodiment, the first angle adjusting unit further includes a first key 14 slidably disposed on the main body 5, the first key 14 is provided with a first driving inclined plane 1421, and the first locking member 11 is provided with a first roller 15 in a rotating manner; as shown in fig. 7, when the first button 14 is pressed, the first driving inclined surface 1421 is in abutting engagement with the first roller 15 to drive the first locking member 11 to slide from the first locking position to the first unlocking position. In this embodiment, a second elastic member 17 is disposed between the first key 14 and the main body 5; when the first key 14 is released, the first key 14 can be reset under the action of the second elastic piece 17; the first key 14 includes a first key sleeve 141 and a first push rod 142 fixedly connected to the first key sleeve 141, the first push rod 142 is provided with the first driving inclined plane 1421, and the second elastic member 17 is abutted between the first push rod 142 and the main body 5. This embodiment is through being equipped with first drive inclined plane 1421 on first button 14, and it is equipped with first gyro wheel 15 to rotate on first retaining member 11, make when pressing first button 14, first drive inclined plane 1421 and the cooperation of first gyro wheel 15 butt slide to first unblock position by first locking position with drive first retaining member 11, and simultaneously, relative motion between first drive inclined plane 1421 and the first gyro wheel 15 is the roll, frictional force is less, make first button 14 feel better, it is laborsaving to press, promote user's use experience. In other embodiments, the first locking member may be provided with a first driving inclined surface, the first key is provided with a first roller in a rotating manner, and the first driving inclined surface and the first roller are in abutting engagement to drive the first locking member to slide from the first locking position to the first unlocking position when the first key is pressed.

Referring to fig. 1 to 12, in the present embodiment, the present invention further includes a second angle adjusting unit, the second angle adjusting unit includes a second locking member 31 movably disposed on the fixed member 2 and capable of moving between a second locking position and a second unlocking position relative to the fixed member 2, and a second rotating member 32 rotatably disposed on the fixed member 2 and capable of rotating around a second axis 321 relative to the fixed member 2, the first axis 122 is different from the second axis 321, the first rotating member 12 is rotatably connected to the second rotating member 32 and capable of rotating around the first axis 122 relative to the second rotating member 32, so that the first rotating member 12 is rotatably connected to the fixed member 2 through the second rotating member 32 and capable of rotating around the first axis 122 and the second axis 321 relative to the fixed member 2, as shown in fig. 3, two sides of the first rotating member 12 are rotatably connected to the second rotating member 32 through a rotating shaft 18, respectively; when the second locking member 31 is located at the second locking position, the second locking member 31 can lock the second rotating member 32 and the fixed member 2, so that the second rotating member 32 cannot rotate around the second axis 321 relative to the fixed member 2, and the force arm 4 cannot rotate around the second axis 321 relative to the main body 5; when the second locking member 31 is located at the second unlocking position, the locking between the second rotating member 32 and the fixed member 2 can be released, so that the second rotating member 32 can rotate around the second axis 321 relative to the fixed member 2, and further the force arm 4 can rotate around the second axis 321 relative to the main body 5 to adjust the angle of the force arm 4 in the other direction, at this time, the force arm 4 can drive the second rotating member 32 to rotate around the second axis 321 relative to the fixed member 2 through the first rotating member 12. This embodiment can realize the arm of force 4 in the ascending angle modulation of another side through setting up second angle modulation unit to the user can carry out nimble multi-angle to the arm of force 4 according to size and custom and adjust, and it is more convenient to use.

In the present embodiment, the first axis 122 and the second axis 321 are perpendicular to each other, and the second axis 321 extends in the left-right direction, taking the direction shown in fig. 2 or fig. 6 as an example; the sliding member 13 can further rotate along the second axis 321 relative to the fixed member 2, and the second rotating member 32 is in rotational linkage with the sliding member 13, so that when the first rotating member 12 is driven to rotate around the second axis 321 by the force arm 4, the first rotating member 12 can drive the sliding member 13 to rotate around the second axis 321 by the second rotating member 32, so that the first rotating member 12 and the sliding member 13 are always in transmission connection, and accordingly, the first slot 132 extends along the circumferential direction of the sliding member 13 to form an annular slot, so that when the second rotating member 32 drives the sliding member 13 to rotate around the second axis 321, one end of the first locking member 11, which is in insertion engagement with the first slot 132, can slide in the first slot 132.

Referring to fig. 4 and fig. 5 to 8, in the present embodiment, a plurality of second slots 322 are formed on the second rotating member 32 at equal intervals along the circumferential direction thereof; when the second locking member 31 is located at the second locking position, one end of the second locking member 31 is alternatively inserted into the second slot 322 to lock the second rotating member 32 and the fixing member 2; when the second locking member 31 is located at the second unlocking position, one end of the second locking member 31 exits the second slot 322 to unlock the second rotating member 32 and the fixing member 2.

Referring to fig. 3 and fig. 6 to fig. 12, in the present embodiment, the second locking member 31 is slidably disposed on the fixing member 2; a third elastic part 35 is arranged between the second locking part 31 and the fixed part 2, and the second locking part 31 can be reset from the second unlocking position to the second locking position under the action of the third elastic part 35. In other embodiments, the second locking member can also be rotatably arranged on the fixing member; the second locking member may also be configured to be reset from the second unlocked position to the second locked position under its own weight.

Referring to fig. 1 to 12, in the present embodiment, the fixing element 2 is a fixing sleeve, the sliding element 13 is slidably disposed in the fixing sleeve and can rotate along the second axis 321 relative to the fixing sleeve, and the second rotating element 32 is a sleeve rotatably disposed in the fixing sleeve.

Referring to fig. 1 to 12, in the present embodiment, the second angle adjusting unit further includes a second button 33 slidably disposed on the main body 5, the second button 33 is provided with a second driving inclined plane 3321, and the second locking member 31 is rotatably provided with a second roller 34; as shown in fig. 7, when the second button 33 is pressed, the second driving inclined plane 3321 abuts against and cooperates with the second roller 34 to drive the second locking member 31 to slide from the second locking position to the second unlocking position. In this embodiment, a fourth elastic member 36 is disposed between the second key 33 and the main body 5; when the second button 33 is released, the second button 33 can be reset under the action of the fourth elastic element 36; the second key 33 includes a second key sleeve 331 and a second push rod 332 fixedly connected with the second key sleeve 331, the second push rod 332 is provided with the second driving inclined plane 3321, and the fourth elastic element 36 is abutted between the second push rod 332 and the main body 5. In other embodiments, the second locking member may be provided with a second driving inclined surface, and the second button is provided with a second roller in a rotating manner.

Referring to fig. 1 to 12, in the embodiment, the fixing member 2 is provided with a first guiding sleeve 19 for slidably guiding the first locking member 11, the first guiding sleeve 19 is sleeved outside the first locking member 11, and the first elastic member 16 is specifically abutted between the first locking member 11 and the first guiding sleeve 19; the fixing member 2 is further provided with a second guide sleeve 37 for guiding the second locking member 31 in a sliding manner, the second guide sleeve 37 is sleeved outside the second locking member 31, and the third elastic member 35 is specifically abutted between the second locking member 31 and the second guide sleeve 37.

In this embodiment, the first elastic member 16, the second elastic member 17, the third elastic member 35, and the fourth elastic member 36 are all springs.

The using principle of the embodiment is briefly described as follows:

as shown in fig. 1, 2, 4 to 6, in a normal state, the force arm 4 is located at an initial position, at this time, an included angle between the length direction of the force arm 4 and the vertical direction is 0 degree, the first locking member 11 is located at a first locking position, and the second locking member 31 is located at a second locking position;

when in use, a user can press the first button 14 to make the first driving inclined surface 1421 on the first button 14 abut against and cooperate with the first pulley so as to drive the first locking member 11 to slide from the first locking position to the first unlocking position, and at this time, the first rotating member 12 can be driven by the force arm 4 to rotate around the first axis 122 to adjust the angle of the force arm 4, the first rotating member 12 drives the sliding member 13 to slide to another position relative to the fixed member 2, the first key 14 is released, the first key 14 is reset under the action of the second elastic member 17, the first locking member 11 is reset to the first locking position under the action of the first elastic member 16, one end of the first locking member 11 is inserted and matched with another first slot 132 again, thereby fixing the moment arm 4, fig. 11 shows the moment arm 4 rotating around the first axis 122 to a state where the length direction of the moment arm 4 forms an angle with the vertical direction, compared to the position of the moment arm 4 in fig. 4, 5 or 6;

the user can also press the second button 33 to make the second driving inclined surface 3321 on the second button 33 abut against and cooperate with the second pulley to drive the second locking member 31 to slide from the second locking position to the second unlocking position, at this time, the arm 4 can drive the second rotating member 32 to rotate around the second axis 321 through the first rotating member 12 to adjust the angle of the arm 4, the second rotating member 32 can drive the sliding member 13 to rotate around the second axis 321 while rotating around the second axis 321, the second rotating member 32 rotates to another position relative to the fixing member 2, and then the second button 33 is released, the second button 33 is reset under the action of the fourth elastic member 36, the second locking member 31 is reset to the second locking position under the action of the third elastic member 35, one end of the second locking member 31 is inserted into another second slot 322 again to cooperate with the arm 4 being fixed, compared with the position of the arm 4 in fig. 4 or fig. 5 or fig. 6, fig. 12 shows the moment arm 4 rotating around the second axis 321 to a state where the length direction of the moment arm 4 forms an angle with the vertical direction.

In other embodiments, the second slot may be replaced by a second receptacle, and one end of the second locking member may alternatively be inserted into the second receptacle. Or, in other embodiments, the second rotating part is provided with a plurality of second protrusions at intervals along the circumferential direction thereof, and the second locking part is provided with a second slot; when the second locking piece is positioned at a second locking position, the second slot is alternatively matched with the second convex part in an inserting way so as to lock the second rotating piece and the fixing piece; when the second locking piece is located at the second unlocking position, the second convex part is withdrawn from the second slot.

In other embodiments, the first slot may be replaced by a first insertion hole extending along the circumferential direction of the sliding member, and one end of the first locking member is alternatively inserted into the first insertion hole. Or in other embodiments, a plurality of first protrusions are arranged on the sliding part at intervals along the sliding direction of the sliding part, and a first slot is arranged on the first locking part; when the first locking piece is positioned at the first locking position, the first slot is alternatively matched with the first convex part in an inserting way so as to lock the sliding piece and the fixing piece; when the first locking piece is located at the first unlocking position, the first convex part exits the first slot, and the aim of the utility model can be achieved.

Example two

The present embodiment is substantially the same as the first embodiment, and the difference is only that:

referring to fig. 13 and 14, in the present embodiment, the first angle adjusting unit further includes a transmission member 10, one end of the transmission member 10 is rotatably connected to the first rotating member 12, the other end of the transmission member 10 is rotatably connected to the sliding member 13, and the first rotating member 12 is rotatably connected to the sliding member 13 through the transmission member 10, so that the sliding member 13 can be driven by the transmission member 10 to slide relative to the fixing member 2 when the first rotating member 12 rotates around the first axis 122. Specifically, in the present embodiment, an axis of one end of the transmission member 10 rotatably connected to the first rotating member 12 is parallel to the first axis 122, and an axis of the other end of the transmission member 10 rotatably connected to the sliding member 13 is also parallel to the first axis 122.

In this embodiment, the structures and principles of the remaining portions not described are consistent with the embodiment, and are not described herein again.

Compared with the prior art, according to the arm angle adjusting mechanism disclosed by the utility model, when the first locking member is located at the first locking position, the first locking member can lock the sliding member and the fixed member, so that the sliding member cannot slide relative to the fixed member, the first rotating member cannot rotate relative to the fixed member around the first axis, and the arm cannot rotate relative to the main body around the first axis, so that the arm is fixed; when the first locking member is located at the first unlocking position, the first locking member can unlock the sliding member and the fixed member, so that the sliding member can slide relative to the fixed member, the first rotating member can rotate around the first axis relative to the fixed member, and the force arm can rotate around the first axis relative to the main body to adjust the angle of the force arm. The utility model has simple integral structure, convenient assembly and maintenance and greatly reduced cost.

The above embodiments are only used to further illustrate the arm angle adjusting mechanism of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A force arm angle adjusting mechanism is used for connecting a force arm and a main body and is characterized by comprising a first angle adjusting unit and a fixing piece connected with the main body, wherein the first angle adjusting unit comprises a first locking piece movably arranged on the fixing piece and capable of moving between a first locking position and a first unlocking position, a first rotating piece rotatably connected with the fixing piece and capable of rotating around a first axis relative to the fixing piece, and a sliding piece slidably arranged on the fixing piece;

when the first locking piece is positioned at a first locking position, the sliding piece and the fixed piece can be locked, so that the sliding piece cannot slide relative to the fixed piece; the first locking piece can be unlocked from locking the sliding piece and the fixed piece when located at a first unlocking position.

2. The moment arm angle adjusting mechanism of claim 1, wherein the first rotating member is a gear having a toothed portion, and the sliding member is provided with a rack that can be engaged with the toothed portion for transmission;

or, the first angle adjusting unit further comprises a transmission member, one end of the transmission member is rotatably connected with the first rotating member, the other end of the transmission member is rotatably connected with the sliding member, and the first rotating member is in transmission connection with the sliding member through the transmission member.

3. The moment arm angle adjustment mechanism of claim 1, wherein the first locking member is slidably or rotatably disposed on the securing member.

4. The moment arm angle adjustment mechanism of claim 1, wherein the sliding member is provided with a plurality of first slots or first insertion holes at intervals along a sliding direction thereof; when the first locking member is located at the first locking position, one end of the first locking member is alternatively in inserting fit with the first slot or the first insertion hole so as to lock the sliding member and the fixed member; when the first locking piece is located at a first unlocking position, one end of the first locking piece exits the first slot or the first jack;

or, a plurality of first convex parts are arranged on the sliding part at intervals along the sliding direction of the sliding part, and a first slot is arranged on the first locking part; when the first locking piece is located at the first locking position, the first slot is selectively in inserted connection with the first convex part to lock the sliding piece and the fixing piece; when the first locking piece is located at the first unlocking position, the first convex part exits the first slot.

5. The moment arm angle adjustment mechanism of claim 1, wherein a first elastic member is disposed between the first locking member and the fixing member, and the first locking member is capable of being returned from a first unlocking position to a first locking position by the first elastic member; alternatively, the first locking member can be reset from the first unlocked position to the first locked position under its own weight.

6. The arm angle adjustment mechanism of claim 1, wherein the first angle adjustment unit further comprises a first key slidably disposed on the main body, one of the first key and the first lock member is provided with a first driving ramp, and the other of the first key and the first lock member is rotatably provided with a first roller; when the first key is pressed, the first driving inclined plane is in butt fit with the first roller to drive the first locking piece to slide from the first locking position to the first unlocking position.

7. The moment arm angle adjusting mechanism according to any one of claims 1 to 6, further comprising a second angle adjusting unit, wherein the second angle adjusting unit comprises a second locking member movably disposed on the fixing member and capable of moving between a second locking position and a second unlocking position with respect to the fixing member, and a second rotating member rotatably disposed on the fixing member and capable of rotating around a second axis with respect to the fixing member, the first axis is different from the second axis, and the first rotating member is rotatably connected to the second rotating member and capable of rotating around the first axis with respect to the second rotating member;

when the second locking piece is positioned at a second locking position, the second rotating piece and the fixed piece can be locked, so that the second rotating piece cannot rotate relative to the fixed piece; when the second locking piece is located at a second unlocking position, the locking of the second rotating piece and the fixing piece can be released, and the force arm can drive the second rotating piece to rotate around the second axis through the first rotating piece.

8. The moment arm angle adjustment mechanism of claim 7, wherein the sliding member is further rotatable about the second axis relative to the fixed member, and the first rotating member is configured to rotate the sliding member about the second axis via the second rotating member.

9. The moment arm angle adjustment mechanism of claim 7, wherein the first axis and the second axis are perpendicular to each other.

10. The moment arm angle adjustment mechanism of claim 7, wherein the second rotating member is provided with a plurality of second slots or second insertion holes at intervals along a circumferential direction thereof; when the second locking piece is located at a second locking position, one end of the second locking piece is alternatively inserted and matched with the second slot or the second insertion hole so as to lock the second rotating piece and the fixing piece; when the second locking piece is located at a second unlocking position, one end of the second locking piece is withdrawn from the second slot or the second jack;

or a plurality of second convex parts are arranged on the second rotating part at intervals along the circumferential direction of the second rotating part, and a second slot is arranged on the second locking part; when the second locking piece is positioned at a second locking position, the second slot is alternatively matched with the second convex part in an inserting manner so as to lock the second rotating piece and the fixing piece; when the second locking piece is located at a second unlocking position, the second convex part is withdrawn from the second slot.

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