Telescopic universal coupling

Abstract

The utility model relates to a telescopic universal coupling which is provided with an adjusting sleeve. A sliding rod is slidably connected into one end of the adjusting sleeve, and a sliding groove is formed in the adjusting sleeve. A sliding block capable of being in sliding fit with the sliding groove is arranged on the sliding rod in a telescopic mode, a first limiting part is fixedly arranged on the sliding block, and a second limiting part capable of being in limiting fit with the first limiting part is fixedly arranged on the sliding groove. The sliding rod is further provided with a driving assembly used for driving the first limiting telescopic part and the second limiting telescopic part on the sliding block to seek for limiting fit or be disengaged from limiting fit, the adjusting sleeve is provided with a through groove, the through groove is communicated with the interior of the adjusting sleeve, the driving assembly can stretch out of the through groove to slide, and the length of the coupler can be adjusted to meet different use requirements.

Description

Technical Field

[0001] The utility model relates to a telescopic universal coupling. Background Art

[0002] The universal coupling utilizes the characteristics of its mechanism to enable the two shafts that are not on the same axis to achieve continuous rotation of the two connected shafts when there is an angle between the axes, and to reliably transmit torque and motion. The biggest feature of the universal coupling is that its structure has a large angular compensation capability, a compact structure, and high transmission efficiency. Among them, the existing universal coupling usually includes a mounting shaft and a connecting shaft. There are two mounting shafts, which are respectively arranged on both sides of the axial direction of the connecting shaft, and a connector is provided between each mounting shaft and the connecting shaft. Therefore, the two mounting shafts can be respectively installed on the transmission shafts that need to be linked but are no longer on the same axis. When one of the transmission shafts rotates as the active shaft, the transmission direction is changed by the universal coupling to drive the other transmission shaft to rotate and output.

[0003] The applicability of existing couplings is poor. The length of commonly used couplings is fixed, and it is difficult to properly adjust the overall length according to the actual installation situation, which makes it difficult to install and connect the ends, affects assembly and disassembly, and greatly reduces the use effect of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a telescopic universal coupling, which can adjust the length of the coupling to meet different usage requirements.

[0005] The cam is fixedly provided with a first end fixed to the sliding seat and a second end fixed to the sliding seat, and the cam is fixedly provided with a first end fixed to the sliding seat and a second end fixed to the sliding seat, and the cam is fixedly provided with a first end fixed to the sliding seat and a second end fixed to the sliding seat, and the cam is fixedly provided with a first end fixed to the sliding seat and a second end fixed to the sliding seat,

[0006] Furthermore, a horizontal groove and a vertical groove are provided inside the middle section of the sliding rod, and the horizontal groove and the vertical groove are both extended along the extension direction of the sliding rod and one end is connected to the outside, and the other ends of the horizontal groove and the vertical groove are connected to each other; the sliding block is slidably arranged inside the horizontal groove; the driving assembly includes a connecting plate, a transmission rod and a support seat for supporting the transmission rod, the support seat is fixedly arranged at the notch connecting the vertical groove and the outside, the transmission rod is rotatably set on the support seat, the connecting plates are all located in the vertical groove, one end of the connecting plates extends to the outside, the other end of the connecting plate is fixedly connected to the sliding block, and the end of the connecting plate extending to the outside is connected to the transmission rod, and the transmission rod is threadedly connected to the connecting plate.

[0007] Furthermore, there are two transverse grooves, sliding blocks, sliding grooves and connecting plates, and the two connecting plates are provided with corresponding threaded holes on one end extending to the outside. The transmission rod is fixed with a first threaded portion and a second threaded portion that can form a threaded match with the threaded hole. The thread directions of the first threaded portion and the second thread are opposite. The two connecting plates are able to move toward or away from each other through the threaded match of the first threaded portion and the second thread with the threaded holes on the corresponding connecting plates.

[0008] Furthermore, a plurality of springs are provided on both sides of the inner wall of the vertical slot, one end of each spring is fixedly arranged on the vertical slot, and the other end of each spring acts on the two connecting plates respectively.

[0009] Furthermore, a knob for driving the rotating rod to rotate is fixedly provided on one end of the transmission rod, and an anti-slip portion is provided on the knob.

[0010] Furthermore, the other end of the adjusting sleeve and the end of the sliding rod extending outward are both connected to a universal connector through a cross package.

[0011] The utility model has positive effects: (1) the internal sliding connection of one end of the section sleeve of the utility model is provided with a sliding rod, the interior of the adjusting sleeve is provided with a sliding groove, one end of the sliding groove is communicated with the outside, and the other end of the sliding groove is located inside the adjusting sleeve; the sliding rod is telescopically provided with a sliding block that can form a sliding fit with the sliding groove, the sliding block is fixedly provided with a first limiting part, and the sliding groove is fixedly provided with a second limiting part that can form a limiting fit with the first limiting part, and the first limiting part and the second limiting part are driven by the driving component to seek limiting fit or disengage from limiting fit, so that after the sliding rod slides to a certain position, it is fixed by the limiting fit of the first limiting part and the second limiting part, and becomes slidable after disengaging from the limiting fit through the first limiting part and the second limiting part, so that the middle length of the coupling can be adjusted to meet different usage requirements.

[0012] (2) The driving assembly of the present invention includes a connecting plate, a transmission rod and a support seat for supporting the transmission rod. The support seat is fixedly arranged at the notch connecting the vertical groove and the outside. The transmission rod is rotatably arranged on the support seat. The connecting plates are all located in the vertical groove. One end of the connecting plates extends to the outside. The other end of the connecting plates is fixedly connected to the sliding block. The end of the connecting plate extending to the outside is connected through the transmission rod, and the transmission rod is threadedly connected to the connecting plate. The connecting plate can change its position on the transmission rod under the rotation of the transmission rod, so that the sliding block slides and drives the first limit part and the second limit part to seek or disengage the limit cooperation, which is efficient and convenient.

[0013] (3) The utility model is provided with two transverse grooves, sliding blocks, sliding grooves and connecting plates. The two connecting plates are matched with the threads of the threaded holes on the corresponding connecting plates through the first threaded portion and the second thread with opposite thread directions to move toward or away from each other. The two connecting plates can be controlled to drive the sliding blocks to slide at the same time. Since there are two sliding blocks respectively matched with the sliding grooves, the stability of the sliding restriction is enhanced.

[0014] (4) Two springs are provided inside the vertical slot of the present invention, and the two springs are symmetrically arranged on both sides of the vertical slot. One end of the two springs is fixed on the vertical slot, and the other ends of the two springs act on the two connecting plates respectively; the springs can squeeze the connecting plates to prevent the connecting plates from shaking, so that the first limiting part and the second limiting part that form the limiting fit are disengaged from the limiting fit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the sliding rod of the present utility model;

[0018] Figure 3 It is a cross-sectional view of the sliding rod of the utility model;

[0019] Figure 4 It is a schematic diagram of the cooperation between the first limiting part and the second limiting part of the utility model. DETAILED DESCRIPTION

[0020] See Figures 1 to 4The utility model has an adjusting sleeve 1; a sliding rod 2 is slidably connected to the interior of one end of the adjusting sleeve 1, a sliding groove 11 is provided inside the adjusting sleeve 1, one end of the sliding groove 11 is communicated with the outside, and the other end of the sliding groove 11 is located inside the adjusting sleeve 1; a sliding block 21 that can form a sliding fit with the sliding groove 11 is telescopically provided on the sliding rod 2, a first limiting portion 22 is fixedly provided on the sliding block 21, and a second limiting portion 12 that can form a limiting fit with the first limiting portion 22 is fixedly provided on the sliding groove 11, and the sliding rod 2 is also provided with a means for driving the first limiting portion on the sliding block 21 to telescope and seek limiting fit with or disengage from the limiting fit with the second limiting portion 12 The driving component 3 and the adjusting sleeve 1 are provided with a through groove 13 which is connected to the interior and can allow the driving component 3 to extend and slide; the sliding rod 2 is provided inside the adjusting sleeve 1 through the sliding cooperation between the sliding block 21 and the sliding groove 11 and the driving component 3 drives the first limiting part 22 and the second limiting part 12 to seek limiting cooperation or disengage from limiting cooperation; after the sliding rod 2 slides to a certain position, it is fixed by the limiting cooperation of the first limiting part 22 and the second limiting part 12, and becomes slidable after disengaging from the limiting cooperation through the first limiting part 22 and the second limiting part 12, so that the middle length of the coupling can be adjusted to meet different usage requirements.

[0021] The first limiting portion 22 and the second limiting portion 12 may be configured to form an intersection with each other by adopting a ratchet structure or a block structure.

[0022] When the first limiting portion 22 and the second limiting portion 12 in the present application adopt a ratchet structure, the first limiting portion 22 and the second limiting portion 12 are ratchet bars in opposite directions. When the sliding rod 2 slides outward, the first limiting portion 22 and the second limiting portion 12 do not form a limit, and the sliding rod 2 can slide in the adjustment sleeve 1. When the sliding rod 2 has a tendency to slide inward, the first limiting portion 22 and the second limiting portion 12 form a limit fit, and the sliding rod 2 is fixed in the adjustment sleeve 1.

[0023] When the first limiting portion 22 and the second limiting portion 12 in the present application adopt a card block structure, the first limiting portion 22 and the second limiting portion 12 are cards that can form a card fit with each other, and the driving component 3 drives the first limiting portion 22 and the second limiting portion 12 to seek limiting cooperation or disengage from limiting cooperation so that the card blocks form a card fit or disengage from a card fit, and the sliding rod 2 is fixed in the adjusting sleeve 1 by forming a card fit through the card block, and the sliding rod 2 is disengaged from the card fit through the card block and can slide again in the adjusting sleeve 1, thereby adjusting the middle length of the coupling.

[0024] The cam 32 is connected to the cam 32 by a screw thread, so that the cam 32 is in a state of being rotated with the cam 32, so that the cam 32 is in a state of being rotated with the cam 32.

[0025] The transverse groove 23 extends from one end of the sliding rod 2 to the other end along the extending direction of the sliding rod 2 .

[0026] The above-mentioned support bases 33 are provided with two and are symmetrically fixed on both sides of the notch where the vertical slot 24 communicates with the outside. Both sides of the transmission rod 32 are rotatably set on the support bases 33 on the corresponding side.

[0027] There are two transverse grooves 23, sliding blocks 21, sliding grooves 11 and connecting plates 31. A threaded hole is correspondingly provided on one end of the two connecting plates 31 extending to the outside. A first threaded portion 321 and a second threaded portion 322 that can form a threaded fit with the threaded hole are fixed on the transmission rod 32. The thread directions of the first threaded portion 321 and the second thread are opposite. The two connecting plates 31 are formed to move toward or away from each other through the threaded fit of the first threaded portion 321 and the second thread with the threaded holes on the corresponding connecting plates 31; the two connecting plates 31 can be controlled at the same time to drive the sliding blocks 21 to slide. Since there are two sliding blocks 21 that respectively form a fit with the sliding grooves 11, the stability of the sliding restriction is enhanced.

[0028] A plurality of springs 4 are distributed on both sides of the inner wall of the vertical slot 24, one end of each spring 4 is fixedly set on the vertical slot 24, and the other end of each spring 4 acts on the two connecting plates 31 respectively; the spring 4 can squeeze the connecting plates 31 to prevent the connecting plates 31 from shaking, so that the first limiting portion 22 and the second limiting portion 12 that form a limiting fit are disengaged from the limiting fit.

[0029] The elastic force of the spring 4 is not greater than the force of the twisting transmission rod 32 to drive the connecting plate 31 to move.

[0030] A knob 323 for driving the rotating rod to rotate is fixedly provided on one end of the transmission rod 32 , and an anti-slip portion is provided on the knob 323 .

[0031] The other end of the adjusting sleeve 1 and the end of the sliding rod 2 extending outward are both connected to a universal connector 5 through a cross package.

[0032] When the cam 32 is in the unlock position, the first and second stop portions 321 and 322 of the first and second stop portions 322 are engaged with each other, and the sliding rod 2 is fixed in the inner part of the adjusting sleeve 1 and cannot slide under the action of the first and second stop portions 321 and 322.

[0033] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A retractable universal joint having an adjusting sleeve (1); characterized in that: The adjusting sleeve (1) is internally slidably connected to a sliding rod (2), and a sliding groove (11) is provided inside the adjusting sleeve (1). One end of the sliding groove (11) is communicated with the outside, and the other end of the sliding groove (11) is located inside the adjusting sleeve (1); a sliding block (21) is telescopically provided on the sliding rod (2) and can form a sliding fit with the sliding groove (11); a first limiting portion (22) is fixedly provided on the sliding block (21); a second limiting portion (12) is fixedly provided on the sliding groove (11) and can form a limiting fit with the first limiting portion (22); (2) is also provided with a driving component (3) for driving the first limiting extension of the sliding block (21) to seek limiting cooperation or disengagement with the second limiting part (12); the adjusting sleeve (1) is provided with a through groove (13) which is communicated with the interior and can allow the driving component (3) to extend and slide; the sliding rod (2) is provided with a limiting sliding arrangement inside the adjusting sleeve (1) through the sliding cooperation between the sliding block (21) and the sliding groove (11) and the driving component (3) driving the first limiting part (22) and the second limiting part (12) to seek limiting cooperation or disengagement.

2. The telescopic universal coupling according to claim 1, characterized in that: The middle section of the sliding rod (2) is provided with a transverse groove (23) and a vertical groove (24), both of which are extended along the extension direction of the sliding rod (2) and one end of which is connected to the outside, and the other ends of the transverse groove (23) and the vertical groove (24) are connected to each other; the sliding block (21) is slidably provided inside the transverse groove (23); the driving assembly (3) includes a connecting plate (31), a transmission rod (32) and a support seat ( 33), the support seat (33) is fixedly arranged at the notch communicating with the outside of the vertical slot (24), the transmission rod (32) is rotatably arranged on the support seat (33), the connecting plates (31) are all located in the vertical slot (24), one end of the connecting plates (31) extends to the outside, the other end of the connecting plates (31) is fixedly connected to the sliding block (21), the end of the connecting plate (31) extending to the outside is penetrated and connected to the transmission rod (32), and the transmission rod (32) is threadedly connected to the connecting plate (31).

3. The telescopic universal coupling according to claim 2, characterized in that: The transverse groove (23), the sliding block (21), the sliding groove (11) and the connecting plate (31) are each provided with two, and threaded holes are correspondingly provided on one end of the two connecting plates (31) extending to the outside, and a first threaded portion (321) and a second threaded portion (322) are fixedly provided on the transmission rod (32) and can form a threaded match with the threaded hole, and the thread directions of the first threaded portion (321) and the second thread are opposite, and the two connecting plates (31) move toward or away from each other through the threaded match of the first threaded portion (321) and the second thread with the threaded hole on the corresponding connecting plate (31).

4. The telescopic universal coupling according to claim 3, characterized in that: A plurality of springs (4) are provided on both sides of the inner wall of the vertical slot (24), one end of each spring (4) is fixedly arranged on the vertical slot (24), and the other end of each spring (4) acts on the two connecting plates (31) respectively.

5. The telescopic universal coupling according to claim 4, characterized in that: A knob (323) for driving the rotating rod to rotate is fixedly provided on one end of the transmission rod (32), and an anti-slip portion is provided on the knob (323).

6. The telescopic universal coupling according to claim 1, characterized in that: The other end of the adjusting sleeve (1) and the end of the sliding rod (2) extending outward are both connected to a universal connector (5) via a cross package.

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