Articulated arm fixing mechanism and light guide arm thereof

Abstract

The utility model relates to the technical field of light guide arms, and discloses an articulated arm fixing mechanism and a light guide arm thereof, the articulated arm fixing mechanism comprises a base and a connecting pipe, the connecting pipe is rotatably connected with the base, a lower gasket and an upper gasket are slidably arranged outside the connecting pipe, and a spring is arranged between the lower gasket and the upper gasket; the adjusting assembly is arranged outside the connecting pipe and used for adjusting the deformation amplitude of the spring, the adjusting assembly comprises a nut, clamping grooves and clamping teeth, the nut is in threaded connection with the connecting pipe, the multiple clamping grooves are formed in the top of the upper gasket, the multiple clamping teeth are fixedly arranged at the bottom of the nut, and the clamping teeth can be clamped into the clamping grooves to limit rotation of the nut; the upper gasket can only slide vertically, then the upper gasket can limit rotation of the nut, locking and positioning of the nut are achieved, the prepressing value of the spring is adjusted more stably, the clamping teeth are inclined in the spiral direction outside the connecting pipe, threads outside the connecting pipe are clockwise, and then the nut can only be fastened but cannot be loosened.

Description

TECHNICAL FIELD

[0001] The utility model relates to light guide arm technical field especially relates to joint arm fixing mechanism and its light guide arm. BACKGROUND

[0002] In order to meet the processing demand, the light guide arm is used for direction guiding in the processing.

[0003] The prior art discloses a kind of joint arm fixing mechanism for light guide arm (publication number: CN213614855U), including fixed plate, fixed plate side wall fixed installation fixed ring, fixed plate upper surface is respectively fixed installation clamping device and screw pipe, clamping device upper surface fixed installation spring, spring upper end side wall fixed installation transmission ring, transmission ring upper surface fixed installation connecting rod, connecting rod upper surface fixed installation guide ring, guide ring inner wall is pasted with rotating plate, guide ring upper surface fixed installation connecting plate, connecting plate upper surface fixed installation light guide arm, guide ring lower surface fixed installation transmission pipe, transmission pipe inner wall is set with thread, thread side wall is screwed with screw pipe outer side wall.

[0004] In prior art, mainly through adjusting the extrusion degree of spring to ring to change and then adjust the damping of rotation, spring is realized by screw cap helical rotation, in actual application process, screw cap is connected with screw pipe, is subjected to external interference and is prone to rotate, and then damping will change continuously, the position of light guide arm after adjustment will also be affected, therefore, the position fixing of damping and light guide arm is necessary for the limit of spring deformation amplitude of screw cap.

[0005] Therefore, we propose joint arm fixing mechanism and its light guide arm. CONTENT OF UTILITY MODEL

[0006] The utility model mainly solves the technical problem that the above-mentioned screw cap presses spring and changes due to screw cap loosening, and provides joint arm fixing mechanism and its light guide arm.

[0007] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme, joint arm fixing mechanism and its light guide arm, including:

[0008] Base and connecting pipe, the connecting pipe is rotatably connected with the base, the lower gasket and the upper gasket are slidably arranged on the outer portion of the connecting pipe, the spring is arranged between the lower gasket and the upper gasket, a plurality of thrust grooves are formed in the top of the base, and a plurality of thrust protrusions are fixedly arranged on the bottom of the lower gasket.

[0009] Adjusting assembly is arranged on the outer portion of the connecting pipe for adjusting the deformation amplitude of the spring, the adjusting assembly includes a screw cap, a clamping groove and a clamping tooth, the screw cap is threadedly connected with the connecting pipe, a plurality of clamping grooves are formed in the top of the upper gasket, a plurality of clamping teeth are fixedly arranged on the bottom of the screw cap, and the clamping teeth can be clamped into the clamping grooves to limit the rotation of the screw cap.

[0010] As the preferred mode of the utility model, the upper end of the connecting pipe is provided with a limiting groove, the wall surface of the lower gasket and the upper gasket is fixedly provided with an ear plate, and the ear plate is slidingly arranged in the limiting groove.

[0011] As the preferred mode of the utility model, the connecting pipe is a circular pipe, the lower gasket and the upper gasket are both circular rings, the inner diameters of the lower gasket and the upper gasket are equal, and the inner diameter of the lower gasket is equal to the outer diameter of the connecting pipe.

[0012] As the preferred mode of the utility model, the clamping tooth is a ratchet tooth, and the clamping groove and the clamping tooth are used in cooperation.

[0013] As the preferred mode of the utility model, the adjusting assembly further comprises a pushing rod and a turnover rod, the pushing rod is fixedly connected with the nut, the turnover rod is rotationally connected with the pushing rod, and the turnover rod can push the upper gasket downward.

[0014] As the preferred mode of the utility model, the pushing rod forms a rectangular rod body structure, the pushing rod is integrally formed with the nut, and the pushing rod is arranged on the circumferential surface of the nut, the turnover rod forms an L-shaped rod body structure, the turnover rod extends to the bottom of the nut, the bottom surfaces of the nut and the pushing rod are both provided with an avoiding groove for avoiding the turnover of the turnover rod, and the turnover rod is located in the avoiding groove and flush with the bottom of the nut.

[0015] A light guide arm comprises a light guide arm body, the bottom of the light guide arm body is provided with all the joint arm fixing mechanisms, and the light guide arm is fixedly arranged in the connecting pipe cavity.

[0016] Advantages

[0017] The utility model provides a joint arm fixing mechanism and a light guide arm. The following advantages are achieved:

[0018] 1. The joint arm fixing mechanism and the light guide arm, by rotating the nut, the upper gasket is pushed downward by the nut to adjust the pre-pressing degree of the spring, in order to lock the nut to prevent the nut from rotating and causing the vertical displacement of the upper gasket, the clamping tooth is clamped into the clamping groove, and the upper gasket can only slide vertically, so that the upper gasket can limit the rotation of the nut, the locking and positioning of the nut are realized, the adjustment of the spring pre-pressing value is more stable, the clamping tooth is inclined in the external screw direction of the connecting pipe, the thread on the outside of the connecting pipe is clockwise, and thus the nut can only be tightened but cannot be loosened.

[0019] 2. The articulated arm fixing mechanism and its light guide arm, by moving down the upper gasket, the limiting groove on the wall surface of the upper gasket slides in the lug plate, the upper gasket moves down will extrude the spring to make it deform, and then the pressure degree of the spring to the lower gasket will change, when rotating the connector, the connector will drive the lower gasket to rotate synchronously, through the semicylindrical thrust protrusion clamped into the thrust groove, the rotation of the connector is realized to apply damping, the extrusion degree of the spring changes, the size of the rotation damping of the connector can be adjusted, the structure is simple, and the adjustment and fixing of the light guide arm body are more flexible and convenient

[0020] 3. The articulated arm fixing mechanism and its light guide arm, by holding the turnover lever with hand, the turnover lever is turned over, the end of the turnover lever will extrude the upper gasket to move down, the upper gasket is separated from the nut, and then the clamping tooth is separated from the clamping groove, at this time, the nut can be freely rotated, after the turnover lever is released, the turnover lever is turned over under the action of gravity, the end of the turnover lever is turned over into the avoiding groove, the rotation connecting point of the turnover lever and the driving lever is close to the nut, and then the gravity reset of the turnover lever can be ensured, at the same time, the driving lever can serve as the handle of the rotating nut, the length of the force arm of the rotating nut is prolonged, and the rotating nut is conveniently pushed.

[0021] 4. The articulated arm fixing mechanism and its light guide arm, by fixing the light guide arm body in the inner wall of the connector, the position of the end of the light guide arm body, namely the position of the emitting head, can be adjusted by rotating the connector, the flexible adjustment of the light guide arm body is characterized, and the light guide arm body is adjusted with certain damping and can be positioned. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall perspective view of the utility model;

[0023] Figure 2 It is the base perspective view of the utility model;

[0024] Figure 3 It is the upper gasket perspective view of the utility model;

[0025] Figure 4 It is the upper gasket perspective view of the utility model;

[0026] Figure 5 It is the upper gasket perspective view of the utility model;

[0027] Legend: 10, base; 11, connector; 12, lower gasket; 13, spring; 14, upper gasket; 15, nut; 16, limiting groove; 17, thrust groove; 18, thrust protrusion; 19, lug plate; 20, driving lever; 21, turnover lever; 22, clamping groove; 23, clamping tooth. DETAILED DESCRIPTION

[0028] The articulated arm fixing mechanism and its light guide arm, like Figure 1 ,Figure 2 and Figure 3 as shown, comprising:

[0029] The base 10 and the connecting pipe 11 are rotationally connected with the base 10, the outer part of the connecting pipe 11 is slidably provided with the lower gasket 12 and the upper gasket 14, the spring 13 is arranged between the lower gasket 12 and the upper gasket 14, the top of the base 10 is provided with a plurality of thrust grooves 17, the bottom of the lower gasket 12 is fixedly provided with a plurality of thrust protrusions 18, the connecting pipe 11 is a circular pipe, the lower gasket 12 and the upper gasket 14 are both circular rings, the inner diameters of the lower gasket 12 and the upper gasket 14 are equal, the inner diameter of the lower gasket 12 is equal to the outer diameter of the connecting pipe 11, the upper end of the connecting pipe 11 is provided with a limiting groove 16, the wall surface of the lower gasket 12 and the upper gasket 14 is fixedly provided with an ear plate 19, the ear plate 19 is slidably arranged in the limiting groove 16, and the base 10 is fixedly locked with the equipment through screws;

[0030] In the scheme, the upper gasket 14 is lowered, the limiting groove 16 on the wall surface of the upper gasket 14 slides in the ear plate 19, the lowering of the upper gasket 14 will extrude the spring 13 to deform, and then the pressing force of the spring 13 on the lower gasket 12 will change, when the connecting pipe 11 is rotated, the connecting pipe 11 will drive the lower gasket 12 to rotate synchronously, the semicylindrical thrust protrusion 18 is clamped into the thrust groove 17, the rotation of the connecting pipe 11 is damped, the extrusion degree of the spring 13 can be adjusted to adjust the rotation damping of the connecting pipe 11, the structure is simple, and the adjustment and fixation of the light guide arm body are more flexible and convenient.

[0031] As shown in Figure 3 , Figure 4 and Figure 5 , an adjusting assembly is arranged outside the connecting pipe 11 and is used for adjusting the deformation amplitude of the spring 13, the adjusting assembly comprises a nut 15, a clamping groove 22 and a clamping tooth 23, the nut 15 is threadedly connected with the connecting pipe 11, the top of the upper gasket 14 is provided with a plurality of clamping grooves 22, the bottom of the nut 15 is fixedly provided with a plurality of clamping teeth 23, the clamping teeth 23 can be clamped into the clamping grooves 22 to limit the rotation of the nut 15, the clamping teeth 23 are ratchet teeth, and the clamping grooves 22 and the clamping teeth 23 are used in cooperation;

[0032] The pre-pressing degree of the spring 13 can be adjusted by rotating the nut 15 and extruding the upper gasket 14 to lower, in order to lock the nut 15 to prevent the nut 15 from rotating to cause the vertical displacement of the upper gasket 14, the clamping teeth 23 are clamped into the clamping grooves 22, the upper gasket 14 can only vertically slide, and then the upper gasket 14 can limit the rotation of the nut 15, the locking and positioning of the nut 15 are realized, the pre-pressing value adjustment of the spring 13 is more stable, the clamping teeth 23 are inclined in the screw direction outside the connecting pipe 11, the threads outside the connecting pipe 11 are clockwise, and then the nut 15 can only be fastened but cannot be loosened.

[0033] As shown in Figure 5As shown, the adjusting assembly further comprises a toggle lever 20 and a turnover lever 21, the toggle lever 20 is fixedly connected with the nut 15, the turnover lever 21 is rotationally connected with the toggle lever 20, the turnover lever 21 can push the upper gasket 14 to move downward, the toggle lever 20 forms a rectangular lever structure, the toggle lever 20 is integrally formed with the nut 15, the toggle lever 20 is arranged on the circumferential surface of the nut 15, the turnover lever 21 forms an L-shaped lever structure, the turnover lever 21 extends to the bottom of the nut 15, the bottom surfaces of the nut 15 and the toggle lever 20 are both provided with an avoiding groove for avoiding the turnover of the turnover lever 21, the turnover lever 21 is located in the avoiding groove and flush with the bottom of the nut 15;

[0034] Considering that the nut 15 is clamped with the upper gasket 14 and the nut 15 is loosened, the turnover lever 21 is held by hand, the turnover lever 21 is turned over, the end of the turnover lever 21 presses the upper gasket 14 to move downward, the upper gasket 14 is separated from the nut 15, and then the clamping tooth 23 is separated from the clamping groove 22, at this time, the nut 15 can be freely rotated, after the turnover lever 21 is loosened, the turnover lever 21 is turned over under the action of gravity, the end of the turnover lever 21 is turned over into the avoiding groove, the rotation connecting point of the turnover lever 21 and the toggle lever 20 is close to the nut 15, thereby the gravity reset of the turnover lever 21 can be ensured, at the same time, the toggle lever 20 can serve as a handle for rotating the nut 15, the length of the force arm for rotating the nut 15 is extended, and the rotation of the nut 15 is facilitated.

[0035] Not shown in the figure, a light guide arm comprises a light guide arm body, the bottom of the light guide arm body is provided with all the joint arm fixing mechanisms, the light guide arm is fixedly arranged in the cavity of the connector 11, by fixing the light guide arm body on the inner wall of the connector 11, the position of the end of the light guide arm body, i.e. the position of the emitting head, can be adjusted by rotating the connector 11, the light guide arm body has the characteristics of flexible adjustment, and the light guide arm body has certain damping when being adjusted and can be positioned.

[0036] The utility model discloses a working principle: rotate the screw cap 15, can adjust the pre -compression degree of spring 13 through the screw cap 15 extrusion upper gasket 14 and move down, and in order to lock the screw cap 15 and prevent the screw cap 15 rotation causes upper gasket 14 vertical displacement, through the click 23 and enter the card slot 22, and upper gasket 14 can only vertically slide, and further upper gasket 14 can limit the screw cap 15 rotation, realize the locking positioning of screw cap 15, and for spring 13 pre -compression value adjustment is more stable, through the lower shift of upper gasket 14, the limiting slot 16 of upper gasket 14 wall surface slides in the ear plate 19, and the lower shift of upper gasket 14 will extrude spring 13 and make it deformation, and further the lower pressure degree of spring 13 to lower gasket 12 will change, when rotating the connector pipe 11, the connector pipe 11 will drive lower gasket 12 and rotate synchronously, through the half cylindrical thrust projection 18 and enter the thrust slot 17, realize the rotation of connector pipe 11 and add the damping, and the extrusion degree of spring 13 can adjust the rotation damping size of connector pipe 11, and the above-mentioned steps are the operation mode of tightening screw cap 15.

[0037] When loosening the tightening screw cap 15, hold the turnover lever 21 with hand, use the turnover lever 21 and turn over, and the end of turnover lever 21 will extrude upper gasket 14 and make it move down, and upper gasket 14 is separated from screw cap 15, and further the click 23 is separated from the card slot 22, at this time, the screw cap 15 can rotate freely, after releasing the turnover lever 21, the turnover lever 21 turns over under the action of gravity, and the end of turnover lever 21 turns over and enters the avoiding slot, and the rotary connection point of turnover lever 21 and the driving lever 20 is close to the screw cap 15, and further can guarantee the gravity reset of turnover lever 21.

[0038] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled person in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. Jointed arm fixture, characterized in that The utility model relates to a kind of adjustable spring mechanism, including: Base (10) and adapter pipe (11), the adapter pipe (11) is rotatably connected with base (10), the outside of adapter pipe (11) is slidably provided with lower gasket (12) and upper gasket (14), spring (13) is arranged between lower gasket (12) and upper gasket (14), the top of base (10) is provided with several thrust grooves (17), the bottom of lower gasket (12) is fixedly provided with several thrust protrusions (18); Adjusting assembly is arranged on the outside of adapter pipe (11) for adjusting the deformation amplitude of spring (13), and the adjusting assembly comprises nut (15), clamping groove (22) and clamping tooth (23), the nut (15) is threadedly connected with adapter pipe (11), the top of the upper gasket (14) is provided with several clamping grooves (22), and the bottom of the nut (15) is fixedly provided with several clamping teeth (23), and the clamping teeth (23) can be clamped into the clamping grooves (22) to limit the rotation of the nut (15).

2. The articulated arm fixture of claim 1, wherein: The upper end of the adapter pipe (11) is provided with a limiting groove (16), and the wall surfaces of the lower gasket (12) and the upper gasket (14) are fixedly provided with an ear plate (19), and the ear plate (19) is slidably arranged in the limiting groove (16).

3. The jointed arm fixture of claim 1, wherein: The adapter pipe (11) is a circular pipe, the lower gasket (12) and the upper gasket (14) are both circular rings, the inner diameters of the lower gasket (12) and the upper gasket (14) are equal, and the inner diameter of the lower gasket (12) is equal to the outer diameter of the adapter pipe (11).

4. The articulated arm fixture of claim 1, wherein: The clamping tooth (23) is a ratchet tooth, and the clamping groove (22) and the clamping tooth (23) are used in cooperation.

5. The jointed arm fixture of claim 1, wherein: The adjusting assembly further comprises a push lever (20) and a turnover lever (21), the push lever (20) is fixedly connected with the nut (15), the turnover lever (21) is rotatably connected with the push lever (20), and the turnover lever (21) can push the upper gasket (14) to move downward.

6. The articulated arm fixture of claim 5, wherein: The push lever (20) forms a rectangular rod structure, the push lever (20) is integrally formed with the nut (15), and the push lever (20) is arranged on the circumferential surface of the nut (15), the turnover lever (21) forms an L-shaped rod structure, the turnover lever (21) extends to the bottom of the nut (15), and the bottom surfaces of the nut (15) and the push lever (20) are both provided with an avoiding groove for avoiding the turnover of the turnover lever (21), and the turnover lever (21) is located in the avoiding groove and flush with the bottom of the nut (15).

7. A light guide arm comprising a light guide arm body, characterized by: The bottom of the light guide arm body is provided with the joint arm fixing mechanism of any one of claims 1-6, and the light guide arm is fixedly arranged in the cavity of the adapter pipe (11).

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