Differential connection structure and laser guide arm thereof

Abstract

The utility model relates to the technical field of laser light guide arms, and discloses a differential connection structure and a laser light guide arm thereof, comprising connection blocks which are symmetrically arranged; the differential assembly is arranged between the connecting blocks and used for limiting rotation of the connecting blocks, the differential assembly comprises composition blocks and ratchet gears, the composition blocks are arranged between the connecting blocks and abut against the connecting blocks, the symmetrical ratchet gears are arranged in the composition blocks, one ratchet gear is fixedly connected with the composition block, and the other ratchet gear is fixedly connected with the other ratchet gear. According to the differential assembly, the mode that a nut conducts differential motion in the past is abandoned, so that the problem of thread slipping caused by long-time use of the nut is solved, the position of the light guide pipe body is adjusted by means of meshing state conversion between the ratchet gears, and the light guide pipe body can be adjusted conveniently. And therefore, the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser light guide arms, and in particular relates to a differential connection structure and a laser light guide arm thereof. Background Art

[0002] Currently, in laser light guide arms, the connection methods between the solid-line refraction head and the light guide tube include threaded connection with a locking nut or flange connection, but these connection methods cannot guarantee the coaxial accuracy after connection and provide sufficient connection strength.

[0003] After searching, a document with publication number (CN213628341U) discloses a differential connection structure of a laser light guide arm, including a joint, a differential nut and a light guide extension tube. The differential nut is installed on the right side of the joint, and the light guide extension tube is installed on the right side of the inner cavity of the joint. The light guide extension tube is connected to the differential nut, and a fixing mechanism is installed in the inner cavity of the differential nut.

[0004] The above device moves the connecting ring to the right, and the connecting rod can drive the clamping block to move to the right, so that the clamping block can be separated from the inner cavity of the clamping slot, thereby releasing the fixation of the differential nut. The differential nut can be used according to the normal usage method. The differential nut can be conveniently fixed through this device to avoid thread slippage after long-term use, ensure the stability of the connection, and prevent it from falling off easily.

[0005] The above device fixes the differential nut by cooperating between structures such as a connecting ring, but limiting the differential nut cannot fundamentally solve problems such as thread slippage, and thread slippage will still occur after long-term use.

[0006] In view of this, the present utility model is proposed. Utility Model Content

[0007] In order to solve the technical problem of differential connection slippage, the basic concept of the technical solution adopted by the utility model is:

[0008] A differential connection structure and its laser light guide arm include connecting blocks, which are symmetrically arranged; a differential assembly, which is arranged between the connecting blocks and is used to limit the rotation of the connecting blocks. The differential assembly includes a component block and a ratchet gear, which is arranged between the connecting blocks and abuts against the connecting blocks. Symmetrical ratchet gears are arranged in the component block, one of which is fixedly connected to the component block, and the other is elastically connected to the component block. The ratchet gears are meshed with each other, and the connecting block is fixedly connected to the ratchet gear.

[0009] As a preferred embodiment of the present invention, a connecting rod is provided on the ratchet gear, the connecting rod is fixedly connected to the corresponding ratchet gear, the connecting rod is fixedly connected to the connecting block, and the connecting rod passes through the component block.

[0010] As a preferred embodiment of the present invention, a sliding groove is provided on the inner side of the component block, and the ratchet gear is elastically connected to the sliding groove in the component block.

[0011] As a preferred embodiment of the present invention, a slider is slidably connected in the sliding groove of the component block, a limiting rod is fixedly connected to the slider, and the limiting rod is slidably connected to the ratchet gear.

[0012] As a preferred embodiment of the present invention, a spring is provided between the slider and the ratchet gear, one end of the spring is fixedly connected to the ratchet gear, and the other end of the spring is fixedly connected to the slider.

[0013] As a preferred embodiment of the present invention, the limiting rod, the slider and the spring array are arranged around the ratchet gear, and sufficient space for the ratchet gear, the limiting rod, the slider and the spring to move is opened in the component block.

[0014] A laser light guide arm comprises a light guide tube body for guiding laser light. Both ends of the light guide tube body are provided with all the above-mentioned differential connection structures. The light guide tube body is fixedly connected to a connection block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This differential connection structure and its laser light guide arm, the differential assembly abandons the previous differential method of nuts, thereby avoiding the problem of thread slippage caused by long-term use of nuts. By means of the change of the meshing state between the ratchet gears, the position of the light guide body is adjusted, thereby extending the service life of the device.

[0017] 2. This differential connection structure and its laser light guide arm facilitate the rotation of the light guide tube body in different rotation directions through two different adjustment methods. It is also convenient for users to adjust according to different usage environments and angles, expanding the usage scenarios of the device.

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the attached figure:

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the separation of the connection block and the component blocks of the utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of the differential assembly of the present utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the component blocks of the utility model;

[0024] Figure 5 It is an enlarged schematic diagram of the structure between the ratchet gear and the component blocks of the present invention.

[0025] In the figure: 1. light guide body; 2. connecting block; 21. connecting rod; 3. component block; 4. ratchet gear; 5. limit rod; 51. slider. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0027] See also Figure 1-5 The cam 2 is provided with a plurality of cams 31 and 32, and the cam 2 is provided with a plurality of cams 32. The cam 2 is provided with a plurality of cams 31 and 32. The cam 2 is provided with a plurality of cams 32. The cam 2 is provided with a plurality of cams 31 and 32. The cam 2 is provided with a plurality of cams 32.

[0028] Among them, a connecting rod 21 is provided on the ratchet gear 4, and the connecting rod 21 is fixedly connected to the corresponding ratchet gear 4, and the connecting rod 21 is fixedly connected to the connecting block 2, and the connecting rod 21 passes through the component block 3, and a sliding groove is provided on the inner side of the component block 3. The ratchet gear 4 is elastically connected to the sliding groove in the component block 3, and a slider 51 is slidably connected in the sliding groove of the component block 3, and a limiting rod 5 is fixedly connected to the slider 51. The limiting rod 5 is slidably connected to the ratchet gear 4, and a spring is provided between the slider 51 and the ratchet gear 4. One end of the spring is fixedly connected to the ratchet gear 4, and the other end of the spring is fixedly connected to the slider 51. The limiting rod 5, the slider 51 and the spring array are arranged around the ratchet gear 4, and sufficient space for the activities of components such as the ratchet gear 4, the limiting rod 5, the slider 51 and the spring is opened in the component block 3. In the first adjustment mode, manpower pulls the connecting block 2 outward, and the connecting block 2 drives the connecting rod 21 to move and drives the ratchet elastically connected to the component block 3. The wheel 4 moves and the ratchet gear 4 is pulled to release the meshing state. At this time, human power rotates the corresponding connecting block 2, and the connecting block 2 drives the ratchet gear 4 to rotate through the connecting rod 21, thereby adjusting the position of the light guide main body 1. When the adjustment is completed, the spring is deformed by the force when the ratchet gear 4 moves. When the human power releases the force on the connecting block 2, the spring releases the force generated by the deformation and pushes the ratchet gear 4 to move inward. At this time, human power rotates the ratchet gear 4 until the ratchet gears 4 are meshed. In the second adjustment method, human power rotates the connecting block 2, and the connecting block 2 drives the ratchet gear 4 to rotate in the opposite direction of the meshing direction, thereby adjusting the position of the light guide main body 1. When rotated to the appropriate position, the ratchet gears 4 are naturally meshed. The spring is squeezed and generates an opposite force when the ratchet gear 4 rotates. When the light guide main body 1 rotates to the appropriate position, the spring pushes the ratchet gear 4 through the opposite force, pressing the ratchet gears 4 to limit the position.

[0029] A laser light guide arm includes a light guide tube body 1, which is used to guide laser light. Both ends of the light guide tube body 1 are provided with all the above-mentioned differential connection structures. The light guide tube body 1 is fixedly connected to a connecting block 2. The position of the light guide tube body 1 is adjusted by means of the meshing state change between the ratchet gears 4, thereby extending the service life of the device. At the same time, through two different adjustment methods, it is convenient to rotate the light guide tube body 1 in different rotation directions, and it is convenient for users to adjust according to different usage environments and angles, thereby expanding the usage scenarios of the device.

[0030] Working principle: In the first adjustment mode, manpower pulls the connecting block 2 outward, and the connecting block 2 drives the connecting rod 21 to move and drives the ratchet gear 4 elastically connected to the component block 3 to move. The ratchet gear 4 is pulled to release the meshing state. At this time, manpower rotates the corresponding connecting block 2, and the connecting block 2 drives the ratchet gear 4 to rotate through the connecting rod 21, thereby adjusting the position of the light guide body 1. When the adjustment is completed, the spring is deformed by the force when the ratchet gear 4 moves. When the manpower releases the force on the connecting block 2, the spring releases the force generated by the deformation and pushes the ratchet gear 4 to move inward. At this time, manpower rotates the ratchet gear 4 until the ratchet gears 4 are meshed. In the second adjustment mode, manpower rotates the connecting block 2, and the connecting block 2 drives the ratchet gear 4 to rotate in the opposite direction of the meshing direction, thereby adjusting the light guide body. 1 is adjusted to its position. When it is rotated to a suitable position, the ratchet gears 4 are naturally engaged. The spring is squeezed when the ratchet gear 4 rotates and generates an opposite force. When the light guide body 1 is rotated to a suitable position, the spring pushes the ratchet gear 4 through an opposite force, pressing the ratchet gears 4 to limit the position. Through the above two operating methods, the previous method of differential movement of the nut is abandoned, thereby avoiding the problem of thread slippage caused by long-term use of the nut. With the help of the meshing state change between the ratchet gears 4, the position of the light guide body 1 is adjusted, thereby extending the service life of the device. At the same time, through two different adjustment methods, it is convenient to rotate the light guide body 1 in different rotation directions, and it is convenient for users to adjust according to different usage environments and angles, thereby expanding the usage scenarios of the device.

[0031] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A differential connection structure, characterized in that: include: The connecting blocks (2) are symmetrically arranged; A differential assembly is provided between the connecting blocks (2). The differential assembly is used to limit the rotation of the connecting blocks (2). The differential assembly comprises a component block (3) and a ratchet gear (4). The component block (3) is provided between the connecting blocks (2). The component block (3) abuts against the connecting blocks (2). Symmetrical ratchet gears (4) are provided in the component block (3). One ratchet gear (4) is fixedly connected to the component block (3), and the other ratchet gear (4) is elastically connected to the component block (3). The ratchet gears (4) are meshed with each other, and the connecting blocks (2) are fixedly connected to the ratchet gear (4).

2. The differential connection structure according to claim 1, wherein: A connecting rod (21) is provided on the ratchet gear (4), the connecting rod (21) is fixedly connected to the corresponding ratchet gear (4), the connecting rod (21) is fixedly connected to the connecting block (2), and the connecting rod (21) passes through the component block (3).

3. The differential connection structure according to claim 1, wherein: A sliding groove is provided on the inner side of the component block (3), and the ratchet gear (4) is elastically connected to the sliding groove in the component block (3).

4. The differential connection structure according to claim 3, wherein: A slider (51) is slidably connected in the sliding groove of the component block (3), a limiting rod (5) is fixedly connected to the slider (51), and the limiting rod (5) is slidably connected to the ratchet gear (4).

5. The differential connection structure according to claim 4, characterized in that: A spring is provided between the slider (51) and the ratchet gear (4), one end of the spring is fixedly connected to the ratchet gear (4), and the other end of the spring is fixedly connected to the slider (51).

6. The differential connection structure according to claim 5, characterized in that: The limiting rod (5), the slider (51) and the spring array are arranged around the ratchet gear (4), and sufficient space for the ratchet gear (4), the limiting rod (5), the slider (51) and the spring to move is provided in the component block (3).

7. A laser light guide arm, comprising a light guide tube body (1), characterized in that: The light guide body (1) is used for guiding laser light, and both ends of the light guide body (1) are provided with a differential connection structure according to any one of claims 1 to 6, and the light guide body (1) is fixedly connected to the connection block (2).

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