WO2021073342A1

WO2021073342A1 - Meshing mechanism, rotating module applying meshing mechanism, and operating bed

Info

Publication number: WO2021073342A1
Application number: PCT/CN2020/115530
Authority: WO
Inventors: 扈钧; 邓子林; 谢超群
Original assignee: 深圳市科曼医疗设备有限公司
Priority date: 2019-10-17
Filing date: 2020-09-16
Publication date: 2021-04-22
Also published as: CN110812089A

Abstract

Disclosed are a meshing mechanism, a rotating module applying the meshing mechanism, and an operating bed. Provided is an operating bed comprising a rotating module, the rotating module comprising a first module member, a second module member, and a meshing mechanism, wherein the meshing mechanism comprises a base (1), a shaft body (2), a meshing assembly (3), and a self-locking wrench (4), the base (1) is provided with a first shaft seat (11) and a second shaft seat (12), the meshing assembly (3) comprises a first meshing block (31), a second meshing block (32), and a first elastic member (36), the self-locking wrench (4) comprises a wrench body (41), a second elastic member (42), and a button (43), the wrench body (41) comprises a hinge part (411) and a handle (412) connected to the hinge part (411), the peripheral face of the hinge part (411) is provided with a first limiting face (4111) and a second limiting face (4112) that are adjacent, and the side, close to the end part of the shaft body (2), of the button (43) protrudes to form an abutting part (431). The button (43) is pressed, and the self-locking wrench (4) is adjusted to enable the abutting part (431) to move to the end part of the shaft body (2), such that the meshing mechanism can be kept stable when colliding; and the self-locking wrench (4) is adjusted to enable the second limiting face (4112) to face the second meshing block (32) such that the meshing mechanism can be kept quiet in the adjustment process.

Description

Tightening mechanism, rotating module using the tightening mechanism, and operating table

Technical field

The application belongs to the technical field of medical devices, and in particular relates to a tightening mechanism, a rotating module using the tightening mechanism, and an operating bed.

Background technique

The operating table, also known as the operating table, can support the patient during the operation and adjust the position according to the needs of the operation to provide a convenient operating environment for the doctor. The operating table is the basic equipment of the operating room. The operating bed is usually composed of multiple modules with different functions. These modules usually include a support, a sitting board, a head board, a hand rest, a leg board, and a foot board. The sitting board is carried on the top of the support and is used to support the human body. Waist, the head board is connected to one end of the sitting board to support the head of the human body, the hand rest is connected to both sides of the sitting board to support the hands of the human body, and the leg board is connected to the other end of the sitting board for support For the legs of the human body, the foot plates are arranged on the leg plates for supporting the feet.

technical problem

In some cases, it is necessary to rotate the hand plate and the leg plate relative to the seat plate. In related technologies, the hand plate and the leg plate are usually connected to the seat plate through a tightening mechanism. The tightening mechanism usually includes a wrench, a shaft, and Two meshing blocks, the adjacent sides of the two meshing blocks are provided with cooperating teeth, but the prior art meshing mechanism is easy to interfere with each other and generate noise during use, and the angles of the hand plate, leg plate, etc. are adjusted. After the wrench is locked, the wrench is easy to loosen when impacted and the two engaging pieces are loosened, causing the hand plate or the leg plate to rotate relative to the seat plate. Therefore, the tightening mechanism in the prior art does not meet the requirements of the operating table. Demand for use.

Technical solutions

The technical problem to be solved by this application is to provide a tightening mechanism, a rotating module using the tightening mechanism, and an operating table, which are not easy to make noise when rotating and are not easy to loosen due to collision when in a locked state, and can be more adapted to the operating table Demand for use.

In order to solve the above technical problems, the present application implements an engagement mechanism, including: a base, a shaft, an engagement assembly, and a self-locking wrench; the base has a first shaft seat and a second shaft seat A gap is formed between the first shaft seat and the second shaft seat, one end of the shaft body is fixedly connected to the first shaft seat, and the engaging assembly includes a first engaging block, a second engaging block, and The first elastic member, the first engagement block is rotatably assembled on the shaft body and close to the first shaft seat, the second engagement block is assembled on the shaft body and close to the second shaft seat, the The side of the first engaging block close to the second shaft seat and the side of the second engaging block close to the first shaft seat are provided with mutually matching teeth, and the first elastic member is provided on the first engaging block. Between the second engaging block and the second engaging block and the two ends of the first elastic member are respectively connected to the first engaging block and the second engaging block, and the elastic member is used to provide the second engaging block Block away from the elastic force of the first engagement block; the self-locking wrench includes a wrench body, a second elastic member and a button, the wrench body includes a hinge part and a handle connected to the hinge part, and the shaft body One end is connected to the second shaft seat, the hinge part is hinged to the other end of the shaft body, and the peripheral surface of the hinge part has adjacent first and second limit surfaces. The distance from a limit surface to the rotation axis of the hinge portion is greater than the distance from the second limit surface to the rotation axis, and the first limit surface and the second limit surface are used to resist The second engagement block, the button is rotatably connected to the hinge part, the button is protruded from a side close to the end of the shaft to form an abutting top, and the second elastic member is arranged on the button and the Between the hinged parts, the second elastic member provides elastic force for rotating the button relative to the hinged part so that the abutment part moves in a direction close to the end of the shaft body.

Further, the shaft body of the shaft body protrudes in a radially outward direction to form a limiting shaft shoulder, and the first engagement block is located on a side of the limiting shaft shoulder close to the first shaft seat, and The limiting shaft shoulder is used to block the movement of the first engaging block in a direction approaching the second shaft seat, and the second engaging block is located on the side of the limiting shaft shoulder close to the second shaft seat.

Further, a first shaft hole is defined in the first engagement block, a first stepped groove coaxial with the first shaft hole is formed on the inner wall of the first shaft hole near the second engagement block, and the shaft body Passing through the first shaft hole, the limiting shaft shoulder is received in the first stepped groove.

Further, the engagement assembly further includes a top abutment piece, a top abutment block and a transmission member, the second engagement block defines a second shaft hole, the shaft body penetrates the second shaft hole, and the second A second stepped groove is defined on the inner wall of the shaft hole close to the second shaft seat, the abutting piece is sleeved on the shaft body and embedded in the second stepped groove, and the elastic member is located at the limit position Between the shaft shoulder and the abutting piece, the abutting block is sleeved on the shaft body and abuts on the side of the second engaging block close to the second shaft seat, the transmission member includes a base and A drive foot extending from the base body, the base body is sleeved on the shaft body and located between the abutment block and the wrench, the drive foot passes through the abutment block and abuts On the side of the top plate away from the second engaging block.

Further, the peripheral side of the abutment block is provided with a limiting rib whose extending direction is parallel to the extending direction of the shaft body, the second shaft seat is provided with a second assembly hole, and the inner wall of the second assembly hole is opened with The limiting ribs correspond to and matching limiting grooves, the abutment block is slidably assembled in the second assembly hole and the limiting ribs are slidably connected in the limiting groove; the second stepped groove The peripheral wall is recessed to form a card embedding groove corresponding and matched with the limiting rib, and the limiting rib is partially snapped and embedded in the card embedding groove.

Further, the engagement assembly further includes an abutment block and a transmission member, the abutment block is sleeved on the shaft body and fixed on the side of the second shaft seat close to the second engagement block. The two engaging blocks are slidably connected with the abutment block in the extension direction of the shaft body, the wrench is hinged on one end of the shaft body close to the second shaft seat, and the transmission member includes a base and a slave A drive foot extending from a base body, the base body is sleeved on the shaft body and located between the wrench and the abutment block, the drive foot passes through the abutment block and the end of the drive foot Abutting against the side of the second engaging block close to the second shaft seat.

Further, the second engagement block defines a second shaft hole, the shaft body penetrates the second shaft hole, and a second stepped groove is formed on the inner wall of the second shaft hole near the second shaft seat. The transmission foot abuts against the bottom of the second stepped groove, the abutment block is partially embedded in the second stepped groove, and the peripheral side of the abutment block is set to extend in parallel to the shaft body The peripheral wall of the second stepped groove is recessed to form a locking groove corresponding to and matching with the limiting rib, and the limiting rib is slidably assembled in the card inserting groove.

Further, a first shaft hole is defined in the first engagement block, a first stepped groove coaxial with the first shaft hole is formed on the inner wall of the first shaft hole near the second engagement block, and the shaft body Through the first shaft hole, a connecting groove is formed on the side of the second engaging block close to the first engaging block, the connecting groove corresponds to the first stepped groove, and the elastic member is close to the One end of the first engaging block is arranged in the first stepped groove, and the other end of the elastic member is arranged in the connecting groove.

Further, a side of the hinge part away from the shaft body is recessed to form an assembly groove, the groove bottom of the assembly groove is opened with an opening, the opening corresponds to the end of the shaft body, and the two inner walls of the assembly groove are opposite to each other. A first connecting hole is opened at the corresponding position of the button, a second connecting hole is opened at the corresponding position of the button, the tightening mechanism further includes a connecting shaft, the button is embedded in the assembling groove, and the connecting shaft penetrates through the In the first connecting hole and the second connecting hole, the second elastic member and the abutting top are respectively located on two sides of the connecting shaft, and the abutting top faces the opening.

Further, a first positioning hole is opened in the bottom of the assembling groove, a second positioning hole corresponding to the first positioning hole is opened on the bottom side of the button toward the bottom of the assembling groove, and the second elastic member The two ends are respectively embedded in the first positioning hole and the second positioning hole.

Further, the top abutment includes a sliding surface and a top abutment surface, the sliding surface and the top abutment surface are smoothly connected, and the sliding surface is located on the side of the top abutment surface that is close to the second elastic member. The top abutment surface is a flat surface, and the top abutment surface is parallel to the extension line of the connecting shaft.

Further, the first limit surface is perpendicular to the second limit surface; the first limit surface and the second limit surface are connected by a smooth transition surface.

Further, the hinge portion extends toward the shaft side to form two connecting seats, a gap is formed between the two connecting seats, and the two connecting seats respectively define first shaft holes with axes on the same straight line. A second shaft hole with an axis perpendicular to the extending direction of the shaft is opened near the end of the shaft, the engagement mechanism further includes a hinge shaft, and the end of the shaft is accommodated in the gap, so The hinge shaft passes through the first shaft hole and the second shaft hole.

Further, one end of the hinge shaft is provided with a limiting edge, the limiting edge extends outward along the radial direction of the hinge shaft, and the connecting seat corresponding to the limiting edge is provided with a recessed groove, the The limiting edge is embedded in the embedding groove, a limiting groove is provided on the peripheral side of the other end of the hinge shaft, and the tightening mechanism further includes a limiting gasket, the limiting gasket has a clamping hole, and the limiting gasket The spacer is inserted and assembled with the restriction groove through the clamping hole.

Further, the engaging assembly further includes a protective sleeve, the protective sleeve including a sleeve and an abutting edge extending radially outward from one end edge of the sleeve, and the first engaging block is close to the first The end of the shaft seat and/or the end of the first engaging block close to the second engaging block is provided with the protective sleeve, and the sleeve of the protective sleeve is sleeved on the shaft body and connected with the first engaging block , The abutting edge of the protective sleeve is tightly attached to the end of the first engaging block.

Further, the engagement assembly further includes a first washer, a second washer and a locking screw, the first shaft seat is provided with a first assembly hole, and the shaft body is inserted through the first assembly hole, The first washer is sleeved on the shaft body and is located between the first engagement block and the first shaft seat, and the second washer is fixed to the shaft body close to the shaft by the locking screw. At one end of the first shaft seat, the second gasket is located on a side of the first shaft seat away from the first engaging block.

Further, a rotating module is provided, which includes a first module, a second module, and any one of the above-mentioned tightening mechanism, wherein the first module is assembled with the first engaging block, and the The second module is assembled with the base.

Further, an operating table is provided, which includes the tightening mechanism as described in any one of the above.

Beneficial effect

Compared with the prior art, the tightening mechanism, the rotating module using the tightening mechanism, and the operating table in this application have the following beneficial effects:

Press and hold the button and move the handle to rotate the hinge until the first limit surface faces the second engagement block, the first limit surface abuts against the second engagement block so that the first engagement block and the second engagement block engage tightly. When the button is released, the button rotates under the action of the second elastic member, and the top of the abutment is driven to move to the end of the shaft body. When the handle is hit, the top of the abutment will abut on the end face of the end of the shaft to prevent the wrench. The body rotates to ensure the tight state of the engagement assembly. To loosen the engagement assembly to adjust the angle, press and hold the button. At this time, the top part will be far away from the end of the shaft body, and then the handle can be moved to make the hinge part rotate. Make the second limiting surface face the second engaging block, the elastic force provided by the first elastic member will make the second engaging block away from the first engaging block, so that the teeth of the first engaging block and the second engaging block are separated. The first engagement block and the second engagement block will not interfere with each other, so the angle adjustment process is more quiet. After the angle adjustment is completed, adjust the self-locking wrench to make the first limit surface press against the second engagement block to keep the angle stable , The tightening mechanism of this solution can keep quiet when adjusting the angle, and can remain stable when the angle is adjusted after the angle adjustment is completed, so as to ensure the reliability of the tightening mechanism and better meet the requirements of the operating table.

Description of the drawings

FIG. 1 is a schematic diagram of the overall structure of the tightening mechanism in the first implementation of the embodiment of the present application;

Figure 2 is a schematic cross-sectional view of the tightening mechanism in Figure 1 along the A-A direction;

3 is a schematic diagram of the three-dimensional exploded structure of the tightening mechanism in the first implementation of the embodiment of the present application;

4 is a schematic diagram 1 of the overall structure of the tightening mechanism in the second implementation manner of the embodiment of the present application;

Figure 5 is a schematic cross-sectional view of the tightening mechanism in Figure 4 along the B-B direction;

6 is a schematic diagram of the three-dimensional exploded structure of the tightening mechanism in the second implementation manner of the embodiment of the present application;

FIG. 7 is a second schematic diagram of the overall structure of the tightening mechanism in the second implementation of the embodiment of the present application;

Fig. 8 is a structural schematic diagram of the tightening mechanism after the wrench body is cut along the direction C-C in Fig. 7;

9 is a schematic diagram of a three-dimensional exploded structure of the self-locking wrench and the shaft in the second implementation manner of the embodiment of the present application;

Fig. 10 is a schematic diagram of the structure of a button in an embodiment of the present application.

In the drawings, the reference signs indicate: 1. base; 11, first shaft seat; 12, second shaft seat; 111, first assembly hole; 121, second assembly hole; 1211, limit slot; 2. Shaft body; 21. Limit shaft shoulder; 3. Engagement component; 31. First engagement block; 32. Second engagement block; 33. Abutment block; 34. Transmission; 35. Abutment piece; 36. 37. Protective sleeve; 38. First gasket; 39. Second gasket; 301. Locking screw; 302. Lining; 311. First shaft hole; 321. Second shaft hole; 331 , Limiting rib; 341, base body; 342, driving foot; 371, sleeve; 372, abutting edge; 3021, first positioning piece; 3022, second positioning piece; 3111, first step groove; 3211, second Step groove; 32111, card slot; 4. self-locking wrench; 41, wrench body; 42, second elastic member; 43, button; 44, hinge shaft; 45, limit gasket; 46, connecting shaft; 411, Hinge part; 412, handle; 431, abutting top; 432, second positioning hole; 441, limit edge; 442, limit groove; 451, card hole; 4111, first limit surface; 4112, second limit surface 4113. Connecting seat; 4114. Assembly groove; 4311. Sliding surface; 4312. Top surface; 41141. Opening; 41142. First positioning hole.

Embodiments of the present invention

In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and not used to limit the application.

Examples:

In this embodiment, the operating table includes a rotating module, and the rotating module includes a first module, a second module, and a tightening mechanism. As shown in Figs. 1-10, the tightening mechanism includes: a base 1, The shaft body 2, the engagement assembly 3 and the self-locking wrench 4; the base 1 has a first shaft seat 11 and a second shaft seat 12, a gap is formed between the first shaft seat 11 and the second shaft seat 12, and one end of the shaft body 2 Fixedly connected to the first shaft seat 11, the engaging assembly 3 includes a first engaging block 31, a second engaging block 32 and a first elastic member 36. The first engaging block 31 is rotatably assembled on the shaft body 2 and is close to the first shaft seat 11. The second engaging block 32 is assembled on the shaft body 2 and is close to the second shaft base 12. The side of the first engaging block 31 close to the second shaft base 12 and the side of the second engaging block 32 close to the first shaft base 11 are arranged to match each other The first elastic member 36 is arranged between the first engaging block 31 and the second engaging block 32, and both ends of the first elastic member 36 are connected with the first engaging block 31 and the second engaging block 32 respectively. The elastic member is used for To provide elastic force to keep the second engaging block 32 away from the first engaging block 31; the self-locking wrench 4 includes a wrench body 41, a second elastic member 42 and a button 43. The wrench body 41 includes a hinge part 411 and a handle connected to the hinge part 411 412. The other end of the shaft body 2 is connected to the second shaft base 12, the hinge part 411 is hinged to the other end of the shaft body 2, and the peripheral surface of the hinge part 411 has adjacent first limit surfaces 4111 and second limit surfaces 4112, the distance from the first limit surface 4111 to the rotation axis of the hinge part 411 is greater than the distance from the second limit surface 4112 to the rotation axis. The first limit surface 4111 and the second limit surface 4112 are used to abut the second engagement Block 32, the button 43 is rotatably connected to the hinge portion 411, the side of the button 43 near the end of the shaft 2 protrudes to form a top 431, the second elastic member 42 is arranged between the button 43 and the hinge portion 411, the second elastic member 42 provides elastic force to rotate the button 43 relative to the hinge part 411 to move the top 431 toward the end of the shaft 2; the first module is assembled with the first engaging block 31, and the second module is opposite to the base 1. Assemble, the first module can be a seat board, and the second module can be a hand board or a leg board.

Press and hold the button 43 and move the handle 412 to rotate the hinge portion 411 until the first limiting surface 4111 faces the second engaging block 32, the first limiting surface 4111 abuts against the second engaging block 32 so that the first engaging block 31 and The second engaging block 32 is engaged tightly. At this time, the button 43 is released. The button 43 rotates under the action of the second elastic member 42, and the top portion 431 is driven to move to the end of the shaft body 2. When the handle 412 is impacted, the button 43 rotates. The top 431 will abut on the end face of the end of the shaft body 2 to prevent the wrench body 41 from rotating, so as to ensure the engagement state of the engagement assembly 3. To loosen the engagement assembly 3 to adjust the angle, press and hold the button 43. The top portion 431 will be far away from the end of the shaft body 2, and then the hinge portion 411 can be rotated by pushing the handle 412, so that the second limiting surface 4112 faces the second engaging block 32. The elastic force provided by the first elastic member 36 will make the The two meshing blocks 32 are far away from the first meshing block 31, so that the teeth of the first meshing block 31 and the second meshing block 32 are separated. When the angle is adjusted, the first meshing block 31 and the second meshing block 32 will not interfere with each other, so The angle adjustment process is quieter. After the angle adjustment is completed, adjust the self-locking wrench 4 to make the first limit surface 4111 abut against the second engagement block 32 to keep the angle stable. The tightening mechanism of this solution can maintain the angle when adjusting the angle. Quiet, after the angle adjustment is completed, it can remain stable in the event of a collision, so as to ensure the reliability of the tightening mechanism and better meet the needs of the operating table.

As shown in Figure 1-3, in the first implementation of this embodiment:

In order to keep the engagement mechanism quiet when the hand plate or leg plate rotates in the horizontal direction relative to the seat plate, the shaft body of the shaft body 2 protrudes radially outward to form a limiting shaft shoulder 21, and the first engaging block 31 is located in the limiting shaft. The positioning shaft shoulder 21 is close to the side of the first shaft seat 11, the limiting shaft shoulder 21 is used to block the first engaging block 31 from moving toward the second shaft seat 12, and the second engaging block 32 is located close to the limiting shaft shoulder 21 One side of the second axle seat 12. When installing, the first engaging block 31 is located at a relatively high place. When the first engaging block 31 and the second engaging block 32 are required to be relatively rotatable, the second engaging block is driven by the first elastic member 36 by loosening the self-locking wrench 4 The engaging block 32 slides in a direction away from the first engaging block 31, the teeth of the first engaging block 31 and the second engaging block 32 are released. At this time, the first engaging block 31 will abut on the limiting shaft shoulder 21, so , The first meshing block 31 will not slide along the shaft 2 toward the second meshing block 32 under its own gravity and the weight of the loaded module, ensuring that the teeth between the first meshing block 31 and the second meshing block 32 are not There is interference, which keeps the meshing mechanism quiet when adjusting.

The first engaging block 31 defines a first shaft hole 311. The inner wall of the first shaft hole 311 is close to the second engaging block 32, and a first stepped groove 3111 coaxial with the first shaft hole 311 is formed on the inner wall of the first shaft hole 311. The shaft body 2 penetrates the first shaft. Hole 311, the limiting shoulder 21 is accommodated in the first stepped groove 3111; the engaging assembly 3 also includes two protective sleeves 37, the protective sleeve 37 includes a sleeve 371 and a sleeve 371 extending radially outward from one end edge. The two protective sleeves 37 are respectively arranged on the two ends of the first shaft hole 311. The sleeves 371 of the two protective sleeves 37 are sleeved on the shaft body 2 and extend into the first shaft hole 311, close to the first shaft seat The abutting edge 372 of the protective sleeve 37 of 11 is embedded between the first engagement block 31 and the first shaft seat 11, and the abutting edge 372 of the protective sleeve 37 close to the limiting shaft shoulder 21 is embedded in the limiting shaft shoulder 21 and the first shaft seat. A meshing block 31 between. The limiting shaft shoulder 21 is embedded in the first stepped groove 3111, which can make the assembly of the first engaging block 31 more stable. The two protective sleeves 37 are located between the shaft body 2 and the first engaging block 31, thereby avoiding the first shaft hole 311. The inner wall is in direct contact with the shaft body 2, which can reduce wear and increase the service life.

The engaging assembly 3 further includes a top plate 35, a top block 33 and a transmission member 34. The second engaging block 32 defines a second shaft hole 321. The shaft body 2 penetrates the second shaft hole 321. The inner wall of the second shaft hole 321 is close to A second stepped groove 3211 is opened at the second shaft base 12, the top plate 35 is sleeved outside the shaft body 2 and embedded in the second stepped groove 3211, and the elastic member is located between the stop shoulder 21 and the top plate 35 , The abutting block 33 is sleeved outside the shaft body 2 and abutting on the side of the second engaging block 32 close to the second shaft seat 12, the transmission member 34 includes a base 341 and a driving leg 342 extending from the base 341, the base 341 sets It is arranged on the shaft body 2 and is located between the abutting block 33 and the spanner. The transmission foot 342 passes through the abutting block 33 and abuts against a side of the abutting sheet 35 away from the second engaging block 32.

The second engaging block 32 defines a second shaft hole 321. The shaft body 2 is inserted through the second shaft hole 321. The inner wall of the second shaft hole 321 is close to the second shaft seat 12 and defines a second stepped groove 3211, which is sleeved against the top plate 35 Outside the shaft body 2 and embedded in the second stepped groove 3211, the first elastic member 36 is located between the limiting shoulder 21 and the top abutment piece 35, and the abutment block 33 is sleeved outside the shaft body 2 and abuts against On the side of the second engagement block 32 that is close to the second shaft seat 12, the transmission member 34 includes a base 341 and a transmission foot 342 extending from the base 341. The base 341 is sleeved on the shaft 2 and located on the abutment block 33 and the self-locking wrench 4 In between, the transmission foot 342 passes through the abutting block 33 and abuts on the side of the abutting sheet 35 away from the second engaging block 32. Specifically, the inner diameter of the second shaft hole 321 is larger than the corresponding diameter of the shaft body 2, so that the first elastic member 36 is located between the inner wall of the second shaft hole 321 and the shaft body 2. The sheet 35 is fixed to the second engaging block 32 by screws. A through hole is opened in the middle of the top sheet 35. The through hole matches with the shaft body 2, and the shaft body 2 passes through the through hole, thereby preventing the second engaging block 32 from opposing the shaft body 2. Shaking in the radial direction makes the movement process of the second engagement block 32 more stable; four transmission feet 342 extend from the transmission member 34, and the four transmission feet 342 are arranged at equal angular intervals around the center of the base 341 to abut the top block 33 An opening for the driving foot 342 to pass through is opened at the corresponding position.

The peripheral side of the abutment block 33 is provided with a limiting rib 331 whose extending direction is parallel to the extending direction of the shaft body 2, and the inner wall of the second assembly hole 121 is provided with a limiting groove 1211 corresponding to and matching the limiting rib 331, and the limiting rib 331 slides Connected in the limiting groove 1211; the peripheral wall of the second stepped groove 3211 is recessed to form a locking groove 32111 corresponding to and matching the limiting rib 331, and the limiting rib 331 is partially inserted into the card insertion groove 32111. Specifically, four limiting ribs 331 are provided at equal intervals on the peripheral side of the abutting block 33. Correspondingly, the inner wall of the second assembly hole 121 is provided with four limiting grooves 1211 corresponding to each other, and the peripheral wall of the second stepped groove 3211 The recesses form one-to-one corresponding four card insertion grooves 32111. The limiting groove 1211 can prevent the abutment block 33 from rotating and restrict the abutment block 33 from sliding along the extension direction of the shaft body 2. In the groove 32111, the second engaging block 32 can be prevented from rotating around the shaft body 2, which is more stable.

As shown in Figure 4-6, in the second implementation of this embodiment:

The first engaging block 31 defines a first shaft hole 311. The inner wall of the first shaft hole 311 is adjacent to the second engaging block 32 and a first stepped groove 3111 coaxial with the first shaft hole 311 is opened. The shaft body 2 penetrates the first shaft. Hole 311, one end of the first elastic member 36 close to the first engaging block 31 is set in the first stepped groove 3111; the second engaging block 32 is provided with a connecting groove on the side close to the first engaging block 31, and the connecting groove is connected to the first stepped groove Corresponding to 3111, the other end of the first elastic member 36 is disposed in the connecting groove. In this embodiment, the first elastic member 36 is a spring, the first elastic member 36 is sleeved on the shaft body 2, and both ends of the first elastic member 36 are respectively placed in the first stepped groove 3111 and the connecting groove. Therefore, The position of the first elastic member 36 is relatively stable, and is more reliable when exerting an elastic force. The tightening mechanism of this implementation can be used to realize the rotation between the modules in the vertical direction. The shaft body 2 is set horizontally during installation. Therefore, the first engaging block 31 and the second engaging block 32 will not be affected by gravity. When moving along the shaft 2 to adjust the angle, the elastic force provided by the first elastic member 36 can separate the first engaging block 31 and the second engaging block 32, thereby ensuring a quiet adjustment process.

The engaging assembly 3 further includes a protective sleeve 37, which includes a sleeve 371 and an abutting edge 372 formed radially outwardly extending from one end edge of the sleeve 371. The protective sleeve 37 is disposed on the first engaging block 31 near the first shaft. On the seat 11 side, the sleeve 371 of the protective sleeve 37 is sleeved on the shaft body 2 and extends into the first shaft hole 311, and the abutting edge 372 is embedded between the first engaging block 31 and the first shaft seat 11. In this embodiment, the outer wall of the protective sleeve 37 is close to the inner wall of the first shaft hole 311, and the abutting edge 372 is fixedly assembled with the first engagement block 31 by screws. The protective sleeve 37 can avoid the inner wall of the first shaft hole 311. The direct friction with the shaft body 2 can reduce the wear of the first engagement seat, thereby increasing its service life.

The engagement assembly 3 also includes a first washer 38, a second washer 39 and a locking screw 301. The first shaft base 11 is provided with a first assembly hole 111, the shaft body 2 is inserted into the first assembly hole 111, and the first washer The piece 38 is sleeved outside the shaft body 2 and located between the first engagement block 31 and the first shaft seat 11. The second washer 39 is fixed to the shaft body 2 at an end close to the first shaft seat 11 by a locking screw 301. The two spacers 39 are located on the side of the first shaft seat 11 away from the first engaging block 31. Under the action of the first washer 38, the second washer 39 and the locking screw 301, one end of the shaft body 2 can be firmly fixed on the first shaft seat 11, and the first washer 38 and the second washer 39 can increase the force-receiving area and is more reliable. The first gasket 38 can isolate the protective sleeve 37 and the shaft seat to avoid direct friction between the protective sleeve 37 and the shaft seat. In this embodiment, the engagement assembly 3 also includes an inner liner 302 , The inner liner 302 is fixedly assembled to the base 1, the inner liner 302 has a first positioning piece 3021, the first positioning piece 3021 is located between the first gasket 38 and the first shaft seat 11, the first positioning piece 3021 defines a first positioning Hole 41142. The first positioning hole 41142 has a first positioning edge. The first gasket 38 extends toward the first positioning hole 41142 to form a first positioning block that matches the first positioning hole 41142. The first positioning block is embedded in the first positioning hole 41142. In the positioning hole 41142, the first washer 38 cannot rotate relative to the shaft body 2, which is more stable.

The engaging assembly 3 includes an abutting block 33 and a transmission member 34. The abutting block 33 is sleeved outside the shaft body 2 and fixed on the side of the second shaft base 12 close to the second engaging block 32. The second engaging block 32 and the abutting block 33 is slidably connected in the extending direction of the shaft body 2. The self-locking wrench 4 is hinged on the shaft body 2 at one end close to the second shaft seat 12. The transmission member 34 includes a base body 341 and a drive foot 342 extending from the base body 341. The base body 341 sets Located outside the shaft body 2 and between the self-locking wrench 4 and the abutting block 33, the transmission foot 342 passes through the abutment block 33 and the end of the transmission foot 342 abuts against the second shaft seat of the second engagement block 32 12 sides.

The second engagement block 32 defines a second shaft hole 321. The shaft body 2 penetrates through the second shaft hole 321. The inner wall of the second shaft hole 321 defines a second stepped groove 3211 near the second shaft seat 12, and the transmission foot 342 abuts against At the bottom of the second stepped groove 3211, the abutment block 33 is partially embedded in the second stepped groove 3211, and the peripheral side of the abutment block 33 is provided with a limiting rib 331 whose extending direction is parallel to the extending direction of the shaft body 2. The circumferential wall of the groove 3211 is recessed to form a clamping groove 32111 corresponding to and matching the limiting rib 331, and the limiting rib 331 is slidably fitted in the clamping groove 32111. Specifically, four limiting ribs 331 are provided at equal intervals on the peripheral side of the abutment block 33. Correspondingly, the peripheral wall of the second stepped groove 3211 is recessed to form four engaging grooves 32111 corresponding to each other. Because the limiting ribs 331 slide Assembled in the card insertion groove 32111, therefore, when the second engaging block 32 slides along the shaft body 2, the limiting rib 331 will also slide relatively along the card insertion groove 32111, and the end of the limiting rib 331 abuts against the card When the groove bottom of the groove 32111 is inserted, the second engaging block 32 can be prevented from moving in a direction approaching the second shaft base 12, thereby limiting the movement stroke of the second engaging block 32.

The inner liner 302 also has a second positioning piece 3022. The second positioning piece 3022 is located between the abutting block 33 and the second shaft base 12. The second positioning piece 3022 defines a second positioning hole 432. The second positioning hole 432 has a second positioning hole 432. For the positioning edge, the abutting block 33 extends toward the second positioning hole 432 to form a second positioning block matching the second positioning hole 432. The second positioning block is fitted in the second positioning hole 432. Therefore, the abutting block 33 will not rotate relative to the shaft body 2, and the limiting rib 331 is fitted in the engaging groove 32111. Therefore, the second engaging block 32 It cannot rotate relative to the abutting block 33. With the cooperation of the two functions, the second engaging block 32 cannot rotate relative to the shaft body 2. When the second engaging block 32 is engaged with the first engaging block 31, the first engaging block 31 can be made relative to Base 1 is fixed.

In the first implementation manner and the second implementation manner of this embodiment, the structure of the self-locking wrench 4 is similar:

With reference to Figures 2, 5, and 7-10, the hinge portion 411 is recessed on the side away from the shaft 2 to form an assembly groove 4114. The bottom of the assembly groove 4114 is provided with an opening 41141. The opening 41141 corresponds to the end of the shaft 2. A first connecting hole is opened at the two opposite inner walls of the groove 4114, and a second connecting hole is opened at the corresponding position of the button 43. The self-locking wrench 4 also includes a connecting shaft 46. The button 43 is embedded in the assembling groove 4114, and the connecting shaft 46 passes through In the first connecting hole and the second connecting hole, the second elastic member 42 and the abutting portion 431 are respectively located on two sides of the connecting shaft 46, and the abutting portion 431 faces the opening 41141. The opening 41141 communicates with the gap formed between the two connecting seats 4113, that is, during the rotation of the shaft 2 relative to the hinge portion 411, when the first limit surface 4111 faces the engagement assembly 3, the end surface of the shaft 2 will Right to the opening 41141, in this embodiment, the second elastic member 42 adopts a spring. Pressing the end of the button 43 corresponding to the second elastic member 42 can drive the top 431 to move away from the end of the shaft 2, namely The top portion 431 deviates toward the outer edge of the opening 41141, thereby causing the top portion 431 to deviate from the shaft 2. When the button 43 is released, under the elastic force of the second elastic member 42, the button 43 rotates to drive the top portion 431 to approach The direction of the end of the shaft 2 moves, that is, the top portion 431 moves toward the center of the opening 41141, so that the top portion 431 is close to the shaft 2.

The bottom of the assembling groove 4114 is provided with a first positioning hole 41142, the button 43 faces the bottom of the assembling groove 4114, and a second positioning hole 432 corresponding to the first positioning hole 41142 is opened. Both ends of the second elastic member 42 are respectively embedded in the first A positioning hole 41142 and a second positioning hole 432.

The top abutment 431 includes a sliding surface 4311 and a top abutment surface 4312. The sliding surface 4311 and the top abutment surface 4312 are smoothly connected. The sliding surface 4311 is located on the side of the top abutment surface 4312 close to the second elastic member 42. The top abutment surface 4312 is parallel to the connecting shaft 46. Extension line. Specifically, the end of the shaft 2 has a chamfered surface. When the wrench body 41 is turned to make the first limit surface 4111 face the engagement assembly 3, the end surface of the end of the shaft 2 faces the opening 41141 and acts on the elastic force of the second elastic member 42. The top part 431 will move in the direction of the opening 41141. In this process, the sliding surface 4311 and the chamfered surface can reduce the friction between the shaft 2 and the top part 431, and then the top part 4312 will face the shaft. The end face of the body 2 abuts against the end face 4312 of the shaft body 2 or has a small interval. If the wrench body 41 is hit at this time, the end face of the shaft body 2 will abut against the top face 4312, thereby blocking the shaft. The body 2 rotates relative to the hinge portion 411; when the button 43 is pressed, the top portion 431 deviates from the end surface of the shaft body 2, so the shaft body 2 and the hinge portion 411 can be rotated, and the wrench body 41 is to be rotated to make the second limit surface When 4112 faces the engagement assembly 3, release the button 43, and the button 43 will abut against the peripheral wall of the shaft body 2 under the action of the elastic force.

In this embodiment, the first limiting surface 4111 is perpendicular to the second limiting surface 4112, and the first limiting surface 4111 and the second limiting surface 4112 are connected by a smooth transition surface. Specifically, in this embodiment, the first limiting surface 4111 is parallel to the extending direction of the handle 412, and the second limiting surface 4112 is perpendicular to the extending direction of the handle 412 and is located on the side of the hinge portion 411 away from the handle 412, that is, the handle 412 When the extension direction of the shaft is parallel to the extension direction of the shaft body 2, the first engagement block 31 and the second engagement block 32 are in a loose state, and when the extension direction of the handle 412 is perpendicular to the extension direction of the shaft body 2, the first engagement block 31 and The second engagement block 32 is in a tightly engaged state, and the smooth transition surface can make the operation of turning the wrench body 41 to switch the first limit surface 4111 and the second limit surface 4112 more labor-saving.

The hinge portion 411 extends toward the shaft body 2 to form two connecting seats 4113. A gap is formed between the two connecting seats 4113. The two connecting seats 4113 respectively have first shaft holes 311 with axes on the same straight line. The shaft body 2 is close to the end. A second shaft hole 321 with an axis perpendicular to the extending direction of the shaft body 2 is opened. The self-locking wrench 4 also includes a hinge shaft 44. The end of the shaft body 2 is accommodated in the gap, and the hinge shaft 44 penetrates the first shaft hole. 311 and the second shaft hole 321.

One end of the hinge shaft 44 is provided with a limiting edge 441, the limiting edge 441 extends outward along the radial direction of the hinge shaft 44, the connecting seat 4113 corresponding to the limiting edge 441 is provided with an embedded groove, and the limiting edge 441 is embedded in the embedded groove Inside, the other end of the hinge shaft 44 is provided with a restriction groove 442 on the peripheral side. The self-locking wrench 4 further includes a restriction washer 45. The restriction washer 45 has a clamping hole 451. The restriction washer 45 passes through the clamping hole 451 and the restriction groove 442. Card embedded assembly. Specifically, the restricting groove 442 is an annular groove coaxial with the hinge shaft 44, the clamping hole 451 is a circular hole having a gap and matching with the restricting groove 442, and the restricting washer 45 has an extension on both sides of the gap of the clamping hole 451. The limit washer 45 has elasticity. Therefore, the clamping hole 451 of the limit washer 45 can be opened by the two extension legs to clamp the limit washer 45 in the annular groove, and the limit washer 45 is located in the corresponding On the side of the connecting seat 4113 away from the shaft body 2, the hinge shaft 44 can be prevented from loosening under the cooperation of the limiting edge 441 and the limiting washer 45, so that the connection between the wrench body 41 and the shaft body 2 is more stable and reliable.

The above descriptions are only the preferred embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement and improvement made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

A tightening mechanism, which is characterized by comprising: a base (1), a shaft (2), an engaging component (3) and a self-locking wrench (4); the base (1) has a first shaft seat ( 11) and a second shaft seat (12), a gap is formed between the first shaft seat (11) and the second shaft seat (12), and one end of the shaft body (2) is fixedly connected to the first shaft seat (12). A shaft seat (11), the engagement assembly (3) includes a first engagement block (31), a second engagement block (32) and a first elastic member (36), and the first engagement block (31) is rotatably assembled On the shaft body (2) and close to the first shaft seat (11), the second engagement block (32) is assembled on the shaft body (2) and close to the second shaft seat (12), The side of the first engagement block (31) close to the second shaft seat (12) and the side of the second engagement block (32) close to the first shaft seat (11) are provided with matching teeth , The first elastic member (36) is arranged between the first engaging block (31) and the second engaging block (32), and both ends of the first elastic member (36) are connected to the The first engaging block (31) is connected to the second engaging block (32), and the elastic member is used to provide elastic force to keep the second engaging block (32) away from the first engaging block (31); The self-locking wrench (4) includes a wrench body (41), a second elastic member (42) and a button (43). The wrench body (41) includes a hinge part (411) and is connected to the hinge part (411) The other end of the shaft body (2) is connected to the second shaft seat (12), the hinge part (411) is hinged to the other end of the shaft body (2), the other end of the shaft body (2) is connected to the second shaft seat (12). The peripheral surface of the hinge part (411) has a first limit surface (4111) and a second limit surface (4112) adjacent to each other, and the rotation of the first limit surface (4111) to the hinge part (411) The distance of the shaft is greater than the distance from the second limiting surface (4112) to the rotating shaft, and the first limiting surface (4111) and the second limiting surface (4112) are used to abut against the first limiting surface (4112). Two engaging blocks (32), the button (43) is rotatably connected to the hinge part (411), and the button (43) protrudes from a side close to the end of the shaft body (2) to form a top part (431) ), the second elastic member (42) is disposed between the button (43) and the hinge part (411), and the second elastic member (42) provides for the button (43) to oppose the The hinge part (411) rotates so that the abutting top part (431) moves in a direction close to the end of the shaft body (2) with elastic force.
The tightening mechanism according to claim 1, characterized in that the shaft body (2) protrudes radially outward to form a limit shaft shoulder (21), and the first engagement block (31) ) Is located on the side of the limiting shaft shoulder (21) close to the first shaft seat (11), and the limiting shaft shoulder (21) is used to block the first engaging block (31) from approaching the Moving in the direction of the second shaft seat (12), the second engagement block (32) is located on the side of the limiting shaft shoulder (21) close to the second shaft seat (12).
The tightening mechanism according to claim 2, wherein the first engaging block (31) is provided with a first shaft hole (311), and the inner wall of the first shaft hole (311) is close to the second engaging block A first stepped slot (3111) coaxial with the first shaft hole (311) is opened at (32), the shaft body (2) is penetrated through the first shaft hole (311), and the limit The shaft shoulder (21) is accommodated in the first stepped groove (3111).
The tightening mechanism according to claim 2, wherein the engaging assembly (3) further comprises a top piece (35), a top piece (33) and a transmission member (34), and the second engaging block (32) A second shaft hole (321) is opened, the shaft body (2) is inserted through the second shaft hole (321), and the inner wall of the second shaft hole (321) is close to the second shaft seat ( 12) is provided with a second stepped groove (3211), the abutment piece (35) is sleeved outside the shaft body (2) and embedded in the second stepped groove (3211), the elastic member Located between the limiting shaft shoulder (21) and the abutting piece (35), the abutting block (33) is sleeved on the shaft body (2) and abuts against the second engagement On the side of the block (32) close to the second shaft seat (12), the transmission member (34) includes a base (341) and a transmission foot (342) extending from the base (341). 341) is sleeved on the shaft body (2) and located between the abutting block (33) and the wrench, the transmission foot (342) passes through and abuts the abutting block (33) Abutting the top plate (35) away from the side of the second engaging block (32).
The tightening mechanism according to claim 4, characterized in that the peripheral side of the abutment block (33) is provided with a limiting rib (331) whose extending direction is parallel to the extending direction of the shaft body (2), and the The second shaft seat (12) is provided with a second assembly hole (121), and the inner wall of the second assembly hole (121) is provided with a limiting groove (1211) corresponding and matching with the limiting rib (331), the The abutment block (33) is slidably assembled in the second assembly hole (121) and the limiting rib (331) is slidably connected in the limiting groove (1211); the second stepped groove (3211) The peripheral wall of the rim is recessed to form a card embedding groove (32111) corresponding and matching with the limiting rib (331), and the limiting rib (331) is partially clamped and embedded in the card embedding groove (32111).
The tightening mechanism according to claim 1, characterized in that the engagement assembly (3) further comprises an abutting block (33) and a transmission member (34), and the abutting block (33) is sleeved on the The shaft body (2) is outside and fixed on the side of the second shaft seat (12) close to the second engaging block (32), and the second engaging block (32) and the abutting block (33) are in contact with each other. The shaft (2) is slidably connected in the extending direction, the wrench is hinged on one end of the shaft (2) close to the second shaft seat (12), and the transmission member (34) includes a base (341) ) And a drive foot (342) extending from the base (341), the base (341) is sleeved on the shaft (2) and located between the wrench and the abutment block (33) In between, the transmission foot (342) passes through the abutment block (33) and the end of the transmission foot (342) abuts against the second engagement block (32), which is close to the second shaft seat (12) Side.
The tightening mechanism according to claim 6, wherein the second engagement block (32) is provided with a second shaft hole (321), and the shaft body (2) penetrates the second shaft hole ( 321), the inner wall of the second shaft hole (321) defines a second stepped groove (3211) near the second shaft seat (12), and the transmission foot (342) abuts against the second stepped groove ( 3211), the abutment block (33) is partially embedded in the second stepped groove (3211), and the peripheral side of the abutment block (33) is arranged in an extension direction parallel to the shaft body (2 ) In the extension direction of the limiting rib (331), the peripheral wall of the second stepped groove (3211) is recessed to form a clamping groove (32111) corresponding to and matching the limiting rib (331), and the limiting rib (331) It is slidably fitted in the card insertion groove (32111).
The tightening mechanism according to claim 6, wherein the first engaging block (31) is provided with a first shaft hole (311), and the inner wall of the first shaft hole (311) is close to the second engaging block (32) is provided with a first stepped groove (3111) coaxial with the first shaft hole (311), the shaft body (2) is penetrated through the first shaft hole (311), and the second The engaging block (32) is provided with a connecting groove on the side close to the first engaging block (31), the connecting groove corresponds to the first stepped groove (3111), and the elastic member is close to the first engaging block ( One end of 31) is arranged in the first stepped groove (3111), and the other end of the elastic member is arranged in the connecting groove.
The tightening mechanism according to any one of claims 1-8, characterized in that the side of the hinge part (411) away from the shaft body (2) is recessed to form an assembly groove (4114), and the assembly groove The bottom of the groove (4114) is provided with an opening (41141), the opening (41141) corresponds to the end of the shaft (2), and the two inner walls of the assembly groove (4114) are provided with first connecting holes, so A second connecting hole is opened at the corresponding position of the button (43), the tightening mechanism further includes a connecting shaft (46), the button (43) is embedded in the assembling groove (4114), and the connecting shaft ( 46) Passing through the first connecting hole and the second connecting hole, the second elastic member (42) and the abutting top portion (431) are respectively located on both sides of the connecting shaft (46), The top portion (431) faces the opening (41141).
The tightening mechanism according to claim 9, characterized in that the bottom of the assembling groove (4114) is provided with a first positioning hole (41142), and the button (43) faces the assembling groove (4114). A second positioning hole (432) corresponding to the first positioning hole (41142) is opened on the bottom side, and both ends of the second elastic member (42) are respectively embedded in the first positioning hole (41142) and the Inside the second positioning hole (432).
The tightening mechanism according to claim 9, characterized in that the abutting top (431) comprises a sliding surface (4311) and a top abutting surface (4312), the sliding surface (4311) and the top abutting surface ( 4312) is smoothly connected, the sliding surface (4311) is located on the side of the abutting surface (4312) close to the second elastic member (42), the abutting surface (4312) is a flat surface, and the abutting surface (4312) is parallel to the extension line of the connecting shaft (46).
The tightening mechanism according to claim 9, wherein the first limit surface (4111) is perpendicular to the second limit surface (4112); the first limit surface (4111) and the The second limit surfaces (4112) are connected by a smooth transition surface.
The tightening mechanism according to claim 9, wherein the hinge portion (411) extends toward the shaft body (2) to form two connecting seats (4113), and one of the two connecting seats (4113) A gap is formed between the two connecting seats (4113), and a first shaft hole (311) with an axis on the same line is respectively opened in the two connecting seats (4113), and an axis is perpendicular to the shaft body (2) at the near end of the shaft body (2). ) In the extension direction of the second shaft hole (321), the engagement mechanism further includes a hinge shaft (44), the end of the shaft body (2) is accommodated in the gap, the hinge shaft (44) ) Penetrates through the first shaft hole (311) and the second shaft hole (321).
The tightening mechanism according to claim 13, wherein a limit edge (441) is provided at one end of the hinge shaft (44), and the limit edge (441) is along the diameter of the hinge shaft (44). Extending outward in the direction, the connecting seat (4113) corresponding to the limiting edge (441) is provided with an embedding groove, the limiting edge (441) is embedded in the embedding groove, and the hinge shaft ( 44) A restriction groove (442) is provided on the peripheral side of the other end, the tightening mechanism further includes a restriction washer (45), the restriction washer (45) has a hole (451), and the restriction washer The sheet (45) is inserted and assembled with the restriction groove (442) through the clamping hole (451).
The tightening mechanism according to claim 9, characterized in that, the engagement assembly (3) further comprises a protective sleeve (37), and the protective sleeve (37) includes a sleeve (371) and a slave sleeve ( 371) An abutment edge (372) formed by one end edge extending radially outward, the end of the first engagement block (31) close to the first shaft seat (11) and/or the first engagement block (31) ) Is provided with the protective sleeve (37) close to the end of the second engaging block (32), and the sleeve (371) of the protective sleeve (37) is sleeved outside the shaft body (2) and connected with the The first engaging block (31) is connected, and the abutting edge (372) of the protective sleeve (37) is close to the end of the first engaging block (31).
The tightening mechanism according to claim 9, characterized in that, the engagement assembly (3) further comprises a first washer (38), a second washer (39) and a locking screw (301), and the first washer (38), a second washer (39) and a locking screw (301) A shaft seat (11) is provided with a first assembling hole (111), the shaft (2) is inserted in the first assembling hole (111), and the first gasket (38) is sleeved in the The shaft body (2) is outside and located between the first engagement block (31) and the first shaft seat (11), and the second washer (39) is fixed to the shaft by the locking screw (301) The shaft body (2) is close to one end of the first shaft seat (11), and the second gasket (39) is located on the first shaft seat (11) away from the first engagement block (31). One side.
A rotating module, characterized in that it comprises a first module, a second module and the tightening mechanism according to any one of claims 1-16, wherein the first module is engaged with the first The block (31) is assembled, and the second module is assembled with the base (1).
An operating bed, characterized by comprising the tightening mechanism according to any one of claims 1-17.