A linkage transmission structure

Abstract

The application discloses a linkage transmission structure and belongs to the transmission field. The linkage transmission structure comprises a fixing frame and a transmission mechanism. The top of the fixing frame is fixedly connected with two limiting frames. The transmission mechanism is movably connected between the two limiting frames. The transmission mechanism comprises a moving frame which is slidably connected between the two limiting frames. One end of the moving frame is provided with a leg support. Two torsional springs are fixedly arranged between the leg support and the moving frame. A linear motion mechanism is arranged between the bottom of the moving frame and the top of the fixing frame. A transmission module is arranged between the top of the fixing frame, the bottom of the moving frame and the inner side of the leg support. Sliding grooves are formed in the two sides of the moving frame. The inner wall of the sliding groove is slidably connected with the outer periphery of the corresponding limiting frame. The linkage transmission structure can greatly reduce the number of the transmission module and the related space requirement, the control mode is simplified under the condition of meeting the function, and certain cost requirement is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the transmission field, more particularly, to a linkage transmission structure. BACKGROUND

[0002] Common linkage transmission mechanism, such as used in the seat, cushion and leg support are controlled movement by a separate transmission module, but the existing linkage transmission mechanism in use mostly increased the space occupied, also increased the number of module, so that the control mode is complicated, thereby increasing its cost, therefore, in view of this, for the existing structure to be improved, provide a linkage transmission structure, in order to achieve more practical value of the purpose. SUMMARY

[0003] 1. Technical problems to be solved

[0004] In view of the problems existing in the prior art, the purpose of the present application is to provide a linkage transmission structure, which can greatly reduce the number of the whole transmission module and the related space requirement, and make the control mode simple and reduce the cost requirement under the condition of meeting the function.

[0005] 2. Technical scheme

[0006] In order to solve the above problems, the present application adopts the following technical scheme.

[0007] A linkage transmission structure, comprising a fixed frame and a transmission mechanism, the top of the fixed frame is fixedly connected with two limiting frames, the transmission mechanism is movably connected between the two limiting frames, the transmission mechanism comprises a moving frame movably connected between the two limiting frames, one end of the moving frame is provided with a leg support, two torsional springs are fixedly installed between the leg support and the moving frame, a linear motion mechanism is arranged between the bottom of the moving frame and the top of the fixed frame, and a transmission module is arranged between the top of the fixed frame, the bottom of the moving frame and the inner side of the leg support.

[0008] Further, the moving frame is provided with a sliding groove on both sides, and the inner wall of the sliding groove is slidably connected with the outer periphery of the corresponding limiting frame.

[0009] Further, the leg support comprises two baffles fixed to one end of the moving frame, a rotating shaft is fixedly connected between the two baffles, and a supporting plate is rotatably connected to the outer periphery of the rotating shaft.

[0010] Further, the torsional spring is sleeved on the outer periphery of the rotating shaft, and the two ends of the torsional spring are fixedly connected with the bottom of the moving frame and the inner side of the supporting plate, respectively.

[0011] Further, the straight line motion mechanism comprises a mounting frame fixed to the top of the fixed frame and a rack fixed to the bottom of the moving frame, a gear wheel is rotatably connected to the mounting frame through a bearing, and the outer periphery of the gear wheel is in meshing connection with the bottom of the rack.

[0012] Further, the transmission module comprises two fixed blocks fixed to the bottom of the moving frame, a pin shaft is fixedly installed between the two fixed blocks, the outer periphery of the pin shaft is rotatably connected with a pulley through a bearing, and the outer periphery of the pulley is provided with a rope.

[0013] Further, the rope is divided into an A section and a B section through the pulley, one end of the A section is fixedly connected with the top of the fixed frame, and one end of the B section is fixedly connected with the inner side of the supporting plate.

[0014] Further, the top of the moving frame is fixedly connected with a cushion, and the inside of the cushion is provided with a sponge.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present application are that:

[0017] In the scheme, through the cooperation of a single transmission module and a torsion spring, the linkage between the moving frame and the leg support can be realized, the number of transmission modules and the related space requirement in the device are greatly reduced, the control mode is simplified under the condition of meeting the function, and certain cost requirements are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0019] Figure 2 It is a schematic diagram of the bottom view structure of the present application;

[0020] Figure 3 It is a schematic diagram of the bottom plane of the present application;

[0021] Figure 4 It is a schematic diagram of the side plane of the present application;

[0022] Figure 5 It is a schematic diagram of the Figure 2 enlarged structure in position A of the present application;

[0023] Figure 6 It is a schematic diagram of the Figure 2 enlarged structure in position B of the present application.

[0024] Explanation of reference numerals in the drawing:

[0025] 1, fixed frame;

[0026] 2, transmission mechanism;

[0027] 3. Limiting frame;

[0028] 4. Moving frame; 401. Slide groove;

[0029] 5. Leg support; 501. Baffle; 502. Rotation shaft; 503. Support plate;

[0030] 6. Torsion spring;

[0031] 7. Linear motion mechanism; 701. Mounting frame; 702. Rack; 703. Gear;

[0032] 8. Transmission module; 801. Fixed block; 802. Pin shaft; 803. Pulley; 804. Rope; 8041. Section A; 8042. Section B;

[0033] 9. Cushion. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0035] EMBODIMENT:

[0036] Please refer to Figures 1-6 A linkage transmission structure, comprising a fixed frame 1 and a transmission mechanism 2, the top of the fixed frame 1 is fixedly connected with two limiting frames 3, the transmission mechanism 2 is movably connected between the two limiting frames 3, the transmission mechanism 2 can be limited and guided during movement through the two limiting frames 3, avoiding position deviation, and also serving as support, the transmission mechanism 2 comprises a moving frame 4 movably connected between the two limiting frames 3, the moving frame 4 is provided with a leg support 5 at one end, two torsion springs 6 are fixedly installed between the leg support 5 and the moving frame 4, a linear motion mechanism 7 is arranged between the bottom of the moving frame 4 and the top of the fixed frame 1, and a transmission module 8 is arranged between the top of the fixed frame 1, the bottom of the moving frame 4 and the inner side of the leg support 5, the device is provided with a single transmission module 8, linkage between the moving frame 4 and the leg support 5 can be realized through the cooperation of the transmission module 8 and the torsion spring 6, so that the control mode is simplified, and the number of the entire transmission module 8 and the related space requirement are greatly reduced.

[0037] Please refer to Figure 6 The two sides of the moving frame 4 are both provided with a slide groove 401, and the inner wall of the slide groove 401 is movably connected with the outer periphery of the corresponding limiting frame 3, in use, the slide groove 401 can serve as a limiting mechanism, so that the moving frame 4 will not deviate in position during movement.

[0038] Referring to Figure 1 , Figure 2 and Figure 4 , the leg rest 5 comprises two baffles 501 fixed to one end of the moving frame 4, a rotating shaft 502 fixedly connected between the two baffles 501, and a supporting plate 503 rotatably connected to the outer periphery of the rotating shaft 502. In use, the supporting plate 503 can be installed and rotated through the rotating shaft 502, so that linkage between the moving frame 4 and the leg rest 5 can be achieved.

[0039] Referring to Figure 1 and Figure 3 , the torsional spring 6 is sleeved on the outer periphery of the rotating shaft 502, and the two ends of the torsional spring 6 are fixedly connected to the bottom of the moving frame 4 and the inner side of the supporting plate 503, respectively. In use, the supporting plate 503 can be slowly unfolded by the torsional force of the torsional spring 6 until it is flush with the moving frame 4 or unfolded to the desired position.

[0040] Referring to Figure 2 and Figure 4 , the linear motion mechanism 7 comprises a mounting frame 701 fixed to the top of the fixed frame 1 and a rack 702 fixed to the bottom of the moving frame 4. The mounting frame 701 is rotatably connected to a gear 703 through a bearing, and the outer periphery of the gear 703 is meshingly connected to the bottom of the rack 702. In use, the linear motion of the moving frame 4 and the seat cushion 9 can be achieved through the cooperation of the rack 702 and the gear 703.

[0041] Referring to Figure 2 , Figure 3 and Figure 5 , the transmission module 8 comprises two fixed blocks 801 fixed to the bottom of the moving frame 4, a pin shaft 802 fixedly installed between the two fixed blocks 801, and a pulley 803 rotatably connected to the outer periphery of the pin shaft 802 through a bearing. The outer periphery of the pulley 803 is provided with a rope 804. In use, the linkage between the leg rest 5 and the moving frame 4 can be achieved through the cooperation of the pulley 803 and the rope 804, so that the unfolding and retracting actions of the leg rest 5 can be quickly realized.

[0042] Referring to Figure 4 , the rope 804 is divided into an A section 8041 and a B section 8042 through the pulley 803. One end of the A section 8041 is fixedly connected to the top of the fixed frame 1, and one end of the B section 8042 is fixedly connected to the inner side of the supporting plate 503. In use, the lengths of the A section 8041 and the B section 8042 can be controlled by moving the moving frame 4, so that the unfolding and retracting actions of the leg rest 5 can be controlled.

[0043] Referring to Figure 1The top of the moving frame 4 is fixedly connected with a cushion 9, and the inside of the cushion 9 is provided with a sponge. In use, the sponge can improve the comfort of the user during use.

[0044] In use: the cooperation of the pulley 803, the rope 804 and the torsion spring 6 can make the moving frame 4 and the leg support 5 linkage. When the support plate 503 needs to be unfolded, the moving frame 4 drives the cushion 9 to move under the cooperation of the rack 702 and the gear 703. In the process of moving of the moving frame 4, the position of the pulley 803 also moves synchronously. At this time, the length of the A section 8041 is reduced, and the length of the B section 8042 is increased. In this process, the support plate 503 is slowly unfolded by the torsion of the torsion spring 6 until it is flush with the moving frame 4 or is unfolded to the required position. At this time, the torsion spring 6 has released the stored torsion. When the support plate 503 needs to be retracted, the moving frame 4 is retracted to drive the pulley 803 to be retracted. At this time, the length of the A section 8041 is increased, and the length of the B section 8042 is reduced. The rope 804 overcomes the torsion of the torsion spring 6 to drive the support plate 503 to be retracted, and returns to the state before the support plate 503 is unfolded.

[0045] The above is only the preferred embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A linkage transmission structure comprising a fixed frame (1) and a transmission mechanism (2), characterized in that: The top of the fixed frame (1) is fixedly connected with two limiting frames (3), the transmission mechanism (2) is movably connected between the two limiting frames (3), the transmission mechanism (2) comprises a moving frame (4) movably connected between the two limiting frames (3), one end of the moving frame (4) is provided with a leg support (5), two torsion springs (6) are fixedly installed between the leg support (5) and the moving frame (4), a linear motion mechanism (7) is arranged between the bottom of the moving frame (4) and the top of the fixed frame (1), a transmission module (8) is arranged between the top of the fixed frame (1), the bottom of the moving frame (4) and the inner side of the leg support (5), and sliding grooves (401) are formed in the two sides of the moving frame (4); the inner wall of the sliding groove (401) is slidably connected with the outer periphery of the corresponding limiting frame (3). The transmission module (8) comprises two fixed blocks (801) fixedly installed at the bottom of the moving frame (4), a pin shaft (802) is fixedly installed between the two fixed blocks (801), the outer periphery of the pin shaft (802) is rotatably connected with a pulley (803) through a bearing, and the outer periphery of the pulley (803) is provided with a rope (804). The leg support (5) comprises two baffles (501) fixedly installed at one end of the moving frame (4), a rotating shaft (502) is fixedly connected between the two baffles (501), the outer periphery of the rotating shaft (502) is rotatably connected with a supporting plate (503), the torsion spring (6) is sleeved on the outer periphery of the rotating shaft (502), and the two ends of the torsion spring (6) are fixedly connected with the bottom of the moving frame (4) and the inner side of the supporting plate (503) respectively, and the linear motion mechanism (7) comprises a mounting frame (701) fixedly installed at the top of the fixed frame (1) and a rack (702) fixedly installed at the bottom of the moving frame (4), the mounting frame (701) is rotatably connected with a gear (703) through a bearing, and the outer periphery of the gear (703) is meshedly connected with the bottom of the rack (702).

2. The linkage drive structure of claim 1, wherein: The rope (804) is divided into an A section (8041) and a B section (8042) through the pulley (803), one end of the A section (8041) is fixedly connected with the top of the fixed frame (1), and one end of the B section (8042) is fixedly connected with the inner side of the supporting plate (503).

3. The linkage drive structure of claim 1, wherein: The top of the moving frame (4) is fixedly connected with a cushion (9), and the inside of the cushion (9) is provided with a sponge.

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