Connecting mechanism for dental chair

Abstract

The invention relates to the technical field of dental chair equipment, and discloses a connecting mechanism for a dental chair, the connecting mechanism comprises a rotating arm, one end of the rotating arm is horizontally and rotatably connected with a balance arm, one end, far away from the rotating arm, of the balance arm is horizontally and rotatably connected with an instrument tray, the balance arm comprises a shell I and a shell II, the top face of the first shell is rotationally connected with the rotating arm, a third shell is rotationally connected between the first shell and the second shell, the first shell is provided with a first connecting piece, a second connecting piece is arranged in the second shell, and the first connecting rod and the second connecting rod are fixed through a pressing assembly. The pressing assembly is arranged, a unilateral fixing mode is adopted, the cost is low, the thickness of the balance arm is reduced, the problem of inaccurate positioning in the prior art is solved, the situation that the first connecting rod and the second connecting rod change after the positions are adjusted is reduced, and the situation that the first connecting rod and the second connecting rod fall down is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of dental chair equipment, in particular to a connecting mechanism for a dental chair. Background Art

[0002] The dental chair is used for oral surgery and examination and treatment of oral diseases. Its working principle is: the control switch starts the motor to run and drive the transmission mechanism to move the corresponding parts of the dental chair. According to the treatment needs, the control switch button is operated, and the dental chair can complete the actions of rising, falling, tilting, supine and resetting. Among them, the connection mechanism is one of the important components of the dental chair.

[0003] The connecting mechanism comprises a rotating arm, one end of which is horizontally rotatably connected to a balancing arm, and one end of the balancing arm away from the rotating arm is horizontally rotatably connected to an instrument arm, and the instrument arm is used to connect to the instrument tray.

[0004] However, in the prior art, after the doctor adjusts the position of the balance arm, when the items placed on the instrument tray are heavy, the balance arm is prone to fall down, and the cost of manufacturing the balance arm is high, which needs further improvement.

[0005] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop a connection mechanism for a dental chair. Summary of the invention

[0006] The object of the present invention is to provide a connection mechanism for a dental chair to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A technical solution for a connection mechanism for a dental chair, comprising a rotating arm, one end of the rotating arm being horizontally rotatably connected to a balancing arm, and one end of the balancing arm away from the rotating arm being horizontally rotatably connected to an instrument tray, the balancing arm comprising a shell 1 and a shell 2, the top surface of the shell 1 being rotatably connected to the rotating arm, the top surface of the shell 2 being rotatably connected to the instrument tray, a shell 3 being rotatably connected between the shell 1 and the shell 2, the shell 1 being provided with a connecting piece 1, the shell 2 being provided with a connecting piece 2, the shell 3 being provided with a connecting rod 1 and a connecting rod 2 having one end rotatably connected to the connecting piece 1, the connecting rod 1 and the connecting rod 2 being fixed by a clamping assembly.

[0009] As a preferred technical solution, the clamping assembly includes a cylinder, a strip-shaped hole is opened on one side of the connecting rod one, the cylinder is horizontally installed on one side of the connecting rod one and the piston rod passes through the strip-shaped hole, and a clamping block slidably connected to the strip-shaped hole is installed on the piston rod of the cylinder.

[0010] As a preferred technical solution, a tooth surface one is provided on a side of the clamping block away from the cylinder, and a tooth surface two meshing with the tooth surface one is provided on a side of the connecting rod two close to the connecting rod one.

[0011] As a preferred technical solution, a spring 1 is installed on the piston rod of the cylinder, one end of which is fixed to the side wall of the strip-shaped hole.

[0012] As a preferred technical solution, the connecting member 1 includes a connecting block 1, a through hole 1 is opened on the top surface of the connecting block 1 in the vertical direction, a sleeve 1 is installed in the through hole 1, and two connecting blocks 2 are symmetrically installed on the connecting block 1.

[0013] As a preferred technical solution, the connecting member 2 includes a connecting block 3, the top surface of the connecting block 3 is provided with a through hole 2 in the vertical direction, the through hole 2 is installed with a sleeve 2, and two connecting blocks 4 are symmetrically installed on the connecting block 3.

[0014] As a preferred technical solution, two limit grooves 1 are symmetrically opened on both sides of the connecting block 1 in the vertical direction, and limit blocks 1 are installed in the two limit grooves 1. The two limit blocks 1 are respectively fixed to the top surfaces of the two connecting blocks 2. The top surface of the connecting block 3 is provided with two limit grooves 3, and limit blocks 2 are respectively fixed to the two connecting blocks 4 in the two limit grooves 3.

[0015] As a preferred technical solution, a limiting groove four is opened on one side of the connecting block three, the limiting groove four is installed in the limiting block three, the connecting block five is installed on the bottom surface of the limiting block three, and an adjustment component is rotatably arranged between one of the connecting blocks four and the connecting block five.

[0016] As a preferred technical solution, the adjustment component includes a rotating column, one end of which is rotatably connected between the connecting block four and the connecting block five, a threaded rod is installed at one end of the rotating column, a nut is threadedly connected to the threaded rod, a fixed block is provided on one side of the connecting rod one, a through hole three is opened on the fixed block for the threaded rod to pass through, and a spring two is provided on the threaded rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The present invention is a connection mechanism for a dental chair, which is provided with a clamping assembly and adopts a single-side fixing method, so that the cost is low and the thickness of the balance arm is thinner.

[0019] (2) The present invention is a connection mechanism for a dental chair. The tooth surface 1 and the tooth surface 2 are provided to solve the problem of inaccurate positioning in the prior art, and reduce the change in the position of the connecting rod 1 and the connecting rod 2 after the positions are adjusted, thereby preventing the connecting rod 1 and the connecting rod 2 from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic diagram of the overall structure of a connecting mechanism for a dental chair.

[0021] Figure 2 The figure is a schematic diagram of the overall structure of a balance arm in a connecting mechanism for a dental chair.

[0022] Figure 3 The present invention is a schematic diagram of the positional relationship and angle structure of a connecting member 1, a connecting member 2, a connecting rod 1 and a connecting rod 2 in a connecting mechanism for a dental chair.

[0023] Figure 4 The present invention is a structural schematic diagram showing the positional relationship among a connecting member 1, a connecting member 2, a connecting rod 1 and a connecting rod 2 in a connecting mechanism for a dental chair from another angle.

[0024] Figure 5 The present invention is a schematic diagram showing the position relationship between a cylinder and a spring in a connecting mechanism for a dental chair.

[0025] Figure 6 The present invention is a schematic structural diagram of the position relationship between connecting rod 1 and connecting rod 2 of a connecting mechanism for a dental chair.

[0026] Figure 7 The present invention is a structural schematic diagram showing the position relationship between a connecting rod and a cylinder of a connecting mechanism for a dental chair.

[0027] In the accompanying drawings: 1, rotating arm; 2, balancing arm; 3, instrument tray; 4, shell one; 5, shell two; 6, shell three; 8, connecting rod one; 9, connecting rod two; 10, cylinder; 11, strip hole; 12, clamping block; 13, tooth surface one; 14, tooth surface two; 15, spring one; 16, connecting block one; 17, sleeve one; 18, connecting block two; 19, connecting block three; 20, sleeve two; 21, connecting block four; 22, limit groove one; 23, limit block one; 24, limit groove three; 25, limit block two; 26, limit groove four; 27, limit block three; 28, connecting block five; 29, rotating column; 30, threaded rod; 31, fixing block; 32, spring two; 33, threaded hole; 34, arc groove; 35, bolt two. DETAILED DESCRIPTION

[0028] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0029] like Figure 1-7 As shown, the present invention provides a technical solution of a connection mechanism for a dental chair: it includes a rotating arm 1, a balancing arm 2 is horizontally rotatably connected to one end of the rotating arm 1, an instrument arm is horizontally rotatably connected to the end of the balancing arm 2 away from the rotating arm 1, and an instrument tray 3 is installed on the instrument arm.

[0030] In this embodiment, the body of the balancing arm 2 includes a shell 1 4 and a shell 2 5. The top surface of the shell 1 4 is rotatably connected to the rotating arm 1, and the top surface of the shell 2 5 is rotatably connected to the instrument arm. A shell 3 6 is rotatably connected between the shell 1 4 and the shell 2 5, and the shell 3 6 can achieve up and down movement. The interiors of the shell 1 4, the shell 2 5, and the shell 3 6 are all hollow, and some pipes for connecting the dental chair ventilation, power supply, etc. are placed in the shell 1 4, the shell 2 5, and the shell 3 6.

[0031] In this embodiment, a connecting member 1 is provided in the shell 1 4, and a connecting member 2 is provided in the shell 2 5, wherein the connecting member 1 includes a connecting block 16, the connecting block 16 is installed on the bottom wall of the shell, a through hole 1 is opened on the top surface of the connecting block 16 in the vertical direction, a sleeve 17 is installed in the through hole 1, and two connecting blocks 2 18 are symmetrically installed on the connecting block 16.

[0032] In order to reduce the position change between the two connecting blocks 18 and the connecting block 16, two limit grooves 22 are symmetrically opened along the vertical direction on both sides of the connecting block 16, and limit blocks 23 are installed in the two limit grooves 22. The two limit blocks 23 are respectively fixed to the top surfaces of the two connecting blocks 18. When installing the connecting block 16 and the two connecting blocks 18, the user puts the two limit blocks 23 into the two limit grooves 22 respectively. The two limit blocks 23 have a guiding effect on the connection between the two connecting blocks 18 and the connecting block 16.

[0033] In this embodiment, the connecting block 2 18 includes a connecting block 3 19, which is installed on the bottom wall of the shell 2 5. A through hole 2 is opened on the top surface of the connecting block 3 19 in the vertical direction, a sleeve 2 20 is installed in the through hole 2, and two connecting blocks 4 21 are symmetrically installed on the connecting block 3 19.

[0034] Among them, two limit grooves three 24 are opened on the top surface of the connecting block three 19, and limit blocks two 25 respectively fixed to the two connecting blocks four 21 are installed in the two limit grooves three 24. The two limit blocks two 25 have a guiding function for the connecting block four 21 installed on the connecting block three 19.

[0035] In this embodiment, connecting rod 1 8 and connecting rod 2 9 are rotatably connected between two connecting blocks 2 18 and two connecting blocks 4. After the positions of connecting rod 1 8 and connecting rod 2 9 are adjusted, connecting rod 1 8 and connecting rod 2 9 are fixed by a clamping assembly.

[0036] Among them, the clamping assembly includes a cylinder 10, a strip hole 11 is opened on one side of the connecting rod 8, the cylinder 10 is horizontally installed on one side of the connecting rod 8 and the piston rod passes through the strip hole 11, and a clamping block 12 slidably connected to the strip hole 11 is installed on the piston rod of the cylinder 10. After the position between the connecting rod 1 8 and the connecting rod 2 9 is adjusted, the cylinder 10 is started, and the piston rod of the cylinder 10 drives the clamping block 12 to move linearly. One side of the clamping block 12 abuts against the connecting rod 2 9 to reduce the relative sliding between the connecting rod 1 8 and the connecting rod 2 9.

[0037] A tooth surface 13 is provided on the side of the clamping block 12 away from the cylinder 10, and a tooth surface 14 meshing with the tooth surface 13 is provided on the side of the connecting rod 29 close to the connecting rod 18. When fixing, the tooth surface 13 and the tooth surface 2 14 mesh with each other, and the meshing surface further improves the fixing effect between the connecting rod 1 8 and the connecting rod 2 9.

[0038] In this embodiment, a spring 15 having one end fixed to the side wall of the strip hole 11 is installed on the piston rod of the cylinder 10. When the piston rod of the cylinder 10 is working, the piston rod of the cylinder 10 compresses the spring. When it is necessary to loosen the connecting rod 1 8 and the connecting rod 2 9, the spring restores its deformation and drives the piston rod to move to a preset position.

[0039] In this embodiment, a threaded hole 33 is provided on one side of the connecting rod 1 8, and at the same time, an arc-shaped groove 34 is provided on one side of the connecting rod 2 9. A bolt with one end threadedly connected to the threaded hole 33 is slidably connected in the arc-shaped groove 34. The bolt has a guiding effect on the movement between the connecting rod 1 8 and the connecting rod 2 9. Since the thrust of the cylinder 10 is relatively large, the bolt has a limiting effect on the linear movement of the connecting rod 2 9, thereby reducing the situation where the connecting rod 2 9 is directly pushed. Moreover, when processing the connecting rod 1 8 and the connecting rod 2 9, due to processing errors, the connecting rod 2 9 and the connecting rod 2 9 may bend. The bolt 2 35 ensures that the connecting rod 2 9 is in a straight state.

[0040] In this embodiment, a limiting groove four 26 is opened on one side of the connecting block three 19, a limiting block three 27 is installed in the limiting groove four 26, and a connecting block five 28 is installed on the bottom surface of the limiting block three 27. An adjustment component is rotatably arranged between one of the connecting blocks four 21 and the connecting block five 28, and the adjustment component changes the movement range of the connecting rod one 8 and the connecting rod two 9.

[0041] Among them, the adjustment component includes a rotating column 29, one end of which is rotatably connected between the connecting block four 21 and the connecting block five 28, a threaded rod 30 is installed at one end of the rotating column 29, a nut is threadedly connected to the threaded rod 30, a fixed block 31 is arranged on one side of the connecting rod one 8, a through hole three is opened on the fixed block 31 for the threaded rod 30 to pass through, a spring two 32 is arranged on the threaded rod 30, and when the nut is turned, the nut compresses the spring, and the spring tension will change.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0043] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0045] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection mechanism for a dental chair, characterized in that: The invention comprises a rotating arm (1), one end of the rotating arm (1) is horizontally rotatably connected to a balancing arm (2), one end of the balancing arm (2) away from the rotating arm (1) is horizontally rotatably connected to an instrument plate (3), the balancing arm (2) comprises a shell one (4) and a shell two (5), the top surface of the shell one (4) is rotatably connected to the rotating arm (1), the top surface of the shell two (5) is rotatably connected to the instrument plate (3), a shell three (6) is rotatably connected between the shell one (4) and the shell two (5), the shell one (4) is provided with a connecting piece one, the shell two (5) is provided with a connecting piece two, the shell three (6) has one end rotatably connected to the connecting piece one, and a connecting rod one (8) and a connecting rod two (9) are provided in the shell three (6), the connecting rod one (8) and the connecting rod two (9) are fixed by a clamping assembly.

2. The connection mechanism for a dental chair according to claim 1, characterized in that: The clamping assembly comprises a cylinder (10), a strip-shaped hole (11) is provided on one side of the connecting rod (8), the cylinder (10) is horizontally mounted on one side of the connecting rod (8) and a piston rod passes through the strip-shaped hole (11), and a clamping block (12) is mounted on the piston rod of the cylinder (10) and is slidably connected to the strip-shaped hole (11).

3. The connection mechanism for a dental chair according to claim 2, characterized in that: The side of the clamping block (12) away from the cylinder (10) is provided with a tooth surface one (13), and the side of the connecting rod (9) close to the connecting rod (8) is provided with a tooth surface two (14) meshing with the tooth surface one (13).

4. The connection mechanism for a dental chair according to claim 3, characterized in that: A spring (15) is installed on the piston rod of the cylinder (10) and has one end fixed to the side wall of the strip-shaped hole (11).

5. The connection mechanism for a dental chair according to claim 1, characterized in that: The connecting member 1 comprises a connecting block 1 (16), the top surface of the connecting block 1 (16) is provided with a through hole 1 in the vertical direction, the through hole 1 is provided with a sleeve 1 (17), and two connecting blocks 2 (18) are symmetrically provided on the connecting block 1 (16).

6. The connection mechanism for a dental chair according to claim 5, characterized in that: The connecting member 2 comprises a connecting block 3 (19), the top surface of the connecting block 3 (19) is provided with a through hole 2 along the vertical direction, the through hole 2 is installed with a sleeve 2 (20), and two connecting blocks 4 (21) are symmetrically installed on the connecting block 3 (19).

7. The connection mechanism for a dental chair according to claim 6, characterized in that: Two limiting grooves (22) are symmetrically provided on both sides of the connecting block (16) in the vertical direction, and limiting blocks (23) are installed in the two limiting grooves (22). The two limiting blocks (23) are respectively fixed to the top surfaces of the two connecting blocks (18). Two limiting grooves (24) are provided on the top surface of the connecting block (19), and limiting blocks (25) are respectively fixed to the two connecting blocks (21) in the two limiting grooves (24).

8. The connection mechanism for a dental chair according to claim 7, characterized in that: A limiting groove four (26) is provided on one side of the connection block three (19), a limiting block three (27) is installed in the limiting groove four (26), a connection block five (28) is installed on the bottom surface of the limiting block three, and an adjustment component is rotatably arranged between one of the connection blocks four (21) and the connection block five (28).

9. The connection mechanism for a dental chair according to claim 8, characterized in that: The adjustment component comprises a rotating column (29), one end of which is rotatably connected between the connecting block four (21) and the connecting block five (28), a threaded rod (30) is installed at one end of the rotating column (29), a nut is threadedly connected to the threaded rod (30), a fixing block (31) is arranged on one side of the connecting rod one (8), a through hole three is opened on the fixing block (31) for the threaded rod (30) to pass through, and a spring two (32) is arranged on the threaded rod (30).

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