A torque wrench for a dental scaler

Abstract

A torque wrench for dental scaler relates to the field of oral cleaning apparatus, comprising a shell, a wrench assembly, a limiting mechanism and an adjusting mechanism, the wrench assembly is rotatably arranged in the accommodating cavity, comprising a sleeve, a gear and an internal hexagonal wrench, the sleeve is coaxially rotatably arranged in the accommodating cavity with the accommodating hole; the gear is arranged on the outer side of the sleeve and rotates with it; the internal hexagonal wrench is arranged on the inner side of the sleeve, opposite to the accommodating hole and matched with the working head of the dental scaler; the limiting mechanism comprises a limiting block and a limiting assembly, the limiting block can be moved upward above the gear tooth top or downward in contact with the gear tooth root; the limiting assembly is connected with the limiting block and makes it always have the tendency to move close to the gear; the adjusting mechanism is connected with the limiting assembly to adjust the force applied by the limiting assembly on the limiting block. The present application can accurately control the torque size to adapt to different dental scalers, which has high practicability.

Description

Technical Field

[0001] This utility model belongs to the field of oral cleaning instruments, specifically a torque wrench for dental cleaning devices. Background Technology

[0002] In clinical dental treatment, tooth cleaning (including supragingival scaling, subgingival scaling, and root planing) is frequently involved. Currently, the commonly used technique is the use of ultrasonic scalers to remove supragingival and subgingival plaque, tartar, and tooth surface stains. Currently, ultrasonic scalers typically use separate handles and tips; the tip is screwed onto the handle using a wrench. Ultrasonic scalers usually require relatively low torque, approximately 20-30 N·cm. Conventional scaler wrenches are difficult to adjust in torque, making it impossible to precisely control the torque required for tip installation. Furthermore, different tip sizes require different torques. Because scalers are generally small in size, the threads at the point of contact between the tip and the scaler are quite fine, making it difficult to control torque manually and easily damaging the scaler. This requires improvement. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a torque wrench for dental flossers.

[0004] The present invention adopts the following technical solution:

[0005] A torque wrench for a dental flosser includes a housing, a wrench assembly, a limiting mechanism, and an adjusting mechanism. The housing has an internal cavity for accommodating components, and a clearance hole on one side of the housing, communicating with the cavity and allowing the dental flosser's working head to extend into it. The wrench assembly, rotatably disposed within the cavity, includes a socket, a gear, and an internal hex wrench. The socket is rotatably disposed coaxially with the clearance hole within the cavity. The gear is disposed on the outer side of the socket and rotates with it. The internal hex wrench is disposed on the inner side of the socket, opposite the clearance hole, and adapted to the dental flosser's working head. The limiting mechanism includes a limiting block and a limiting assembly. The limiting block can move upwards to above the gear tooth tip or downwards to contact the gear tooth root. The limiting assembly is connected to the limiting block and always tends to move towards the gear. The adjusting mechanism is connected to the limiting assembly to adjust the force applied by the limiting assembly to the limiting block.

[0006] Preferably, the limiting block is vertically and vertically disposed above the gear, and the limiting component includes a mounting base and a first spring. The mounting base is disposed in the receiving cavity and has a sliding space formed inside for the limiting block to move. The first spring is disposed in the mounting base and applies a downward force to the limiting block.

[0007] Preferably, the adjustment mechanism includes a pressure plate, an adjustment screw hole, and an adjustment screw. The pressure plate is movably disposed in the mounting base and connected to the top surface of the first spring. The adjustment screw hole is formed on the surface of the housing and communicates with the sliding space in the mounting base. The adjustment screw extends from the adjustment screw hole into the sliding space and contacts the pressure plate. As the adjustment screw rotates in the adjustment screw hole, it compresses or releases the first spring, thereby adjusting the force applied to the limiting block.

[0008] Preferably, the housing is further provided with a torque scale parallel to the moving direction of the adjusting screw.

[0009] Preferably, the limiting component includes a rotating plate and a second spring. The rotating plate is rotatably disposed within the housing, and the limiting block is disposed at one end of the rotating plate, located above the gear and moving away from or closer to the gear as it rotates. The second spring is connected to the other end of the rotating plate and is located on both sides of the rotating shaft, respectively, and applies an upward pulling force to the other end of the rotating plate so that the limiting block has a tendency to always move downward.

[0010] Preferably, the adjustment mechanism includes a sliding groove, a limiting groove, and a sliding rod. The sliding groove is formed on the housing and is parallel to the extension direction of the second spring. Several limiting grooves are provided and extend outward from the side of the sliding groove. The sliding rod is connected to the bottom of the second spring and can drive the second spring to extend or shorten. The sliding rod is movably disposed in the sliding groove and enters the limiting groove to fix the second spring.

[0011] Preferably, the limiting groove includes an extension section extending vertically outward from the side of the sliding groove and a limiting section formed from the end of the extension section toward the spring.

[0012] Preferably, the second spring is connected to the other end of the rotating plate via a traction rope.

[0013] Preferably, it further includes a fixing mechanism, which includes a fixing block rotatably disposed in the housing and a handle for driving the fixing block to rotate. The fixing block includes a rotating section and a fixing section. The rotating section is rotatably disposed in the housing. The fixing section is disposed at the end of the rotating section and can rotate with the rotating section to contact the bottom of the rotating plate to restrict its rotation.

[0014] Preferably, the housing is further provided with mounting plates. There are two mounting plates, which are distributed along the axial direction of the sleeve and located on both sides of the gear. The mounting plates are formed with through holes for the gear to pass through. The limiting mechanism and the adjusting mechanism are arranged between the two mounting plates.

[0015] As can be seen from the above description of this utility model, compared with the prior art, the beneficial effects of this utility model are: the force applied to the gear by the limiting block can be quickly adjusted by the adjusting mechanism, so that the pressure of the limiting block is adapted to the torque required when different cleaning tips are locked. The cleaning tip extends into the relief hole and cooperates with the internal hex wrench. When the housing rotates, the gear rotates along with the limiting block, thereby realizing the internal hex wrench driving the cleaning tip to lock. When rotating, the gear always applies an upward force to the limiting block. As the locking proceeds, the upward force gradually increases until it exceeds the pressure of the limiting block when locked. At this time, the limiting block and the gear slip out to prevent the internal hex wrench from continuing to lock the cleaning tip. This application can precisely control the torque to adapt to different cleaning devices and has high practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a structural cross-sectional view of Embodiment 1 of the present utility model;

[0018] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0020] Figure 5 for Figure 3 A magnified view of a section at point B in the middle;

[0021] Figure 6 This is a partial cross-sectional view of Embodiment 2 of the present invention. Figure 1 ;

[0022] Figure 7 This is a partial cross-sectional view of Embodiment 2 of the present invention. Figure 2 ;

[0023] In the diagram: 1-Housing; 11-Receiving cavity; 12-Leaving hole; 13-Mounting plate; 14-Through hole; 15-Torque scale; 16-Blocking section; 2-Wrench assembly; 21-Socket; 22-Gear; 23-Hex wrench; 3-Limiting mechanism; 31-Limiting block; 32-Limiting assembly; 321-Mounting base; 322-First spring; 323-Rotating plate; 324-Second spring; 4-Adjusting mechanism; 41-Pressure plate; 42-Adjusting screw hole; 43-Adjusting screw; 44-Sliding groove; 45-Limiting groove; 451-Extension section; 452-Limiting section; 46-Sliding rod; 5-Fixing mechanism; 51-Fixing block; 511-Rotating section; 512-Fixing section; 52-Handle. Detailed Implementation

[0024] The present invention will be further described below through specific embodiments.

[0025] Example 1:

[0026] Reference Figures 1 to 3 As shown, a torque wrench for a dental flosser includes a housing 1, a wrench assembly 2, a limiting mechanism 3, and an adjusting mechanism 4.

[0027] The housing 1 has a cavity 11 inside that can accommodate the components. A clearance hole 12 is formed on one side of the housing 1, which communicates with the cavity 11 and allows the working head of the dental flosser to extend into it. The end of the clearance hole 12 is recessed inward and has a blocking section 16 that restricts the dental flosser working head from extending too far.

[0028] The wrench assembly 2 is rotatably disposed in the receiving cavity 11, including a sleeve 21, a gear 22, and an internal hex wrench 23. The sleeve 21 is rotatably disposed in the receiving cavity 11 coaxially with the relief hole 12, and is rotatably disposed therein via bearing seats disposed at both ends of the housing 1. The gear 22 is disposed on the outer side of the sleeve 21 and rotates with it. The internal hex wrench 23 is disposed on the inner side of the sleeve 21, opposite to the relief hole 12 and adapted to the working head of the dental scaler. Specifically, the housing 1 is also provided with mounting plates 13. There are two mounting plates 13, which are distributed along the axial direction of the sleeve 21 and located on both sides of the gear 22. The mounting plates 13 are formed with through holes 14 for the gear 22 to pass through. The limiting mechanism 3 and the adjusting mechanism 4 are disposed between the two mounting plates 13.

[0029] The limiting mechanism 3 includes a limiting block 31 and a limiting component 32. The limiting block 31 is vertically and vertically mounted above the gear 22, and can move upward to above the tooth tip of the gear 22 or downward to contact the tooth root of the gear 22. The limiting component 32 is connected to the limiting block 31 and always tends to move closer to the gear 22. Specifically, the limiting component 32 includes a mounting base 321 and a first spring 322. The mounting base 321 is disposed in the receiving cavity 11 and has a sliding space formed inside for the limiting block 31 to move. The first spring 322 is disposed in the mounting base 321 and applies a downward force to the limiting block 31. When the housing 1 rotates, the gear 22 rotates along with the limiting block 31, thereby enabling the internal hex wrench 23 to drive the cleaning tip to lock. During rotation, the gear 22 always applies an upward force to the limiting block 31. As the locking proceeds, the upward force gradually increases until it exceeds the pressure of the limiting block 31. At this point, the limiting block 31 and the gear 22 slip out, preventing the internal hex wrench 23 from continuing to lock the cleaning tip.

[0030] The adjusting mechanism 4 is connected to the limiting component 32 to adjust the force applied by the limiting component 32 to the limiting block 31. The adjusting mechanism 4 includes a pressure plate 41, an adjusting screw hole 42, and an adjusting screw 43. The pressure plate 41 is movably disposed in the mounting base 321 and connected to the top surface of the first spring 322. The adjusting screw hole 42 is formed on the surface of the housing 1 and communicates with the sliding space in the mounting base 321. The adjusting screw 43 extends from the adjusting screw hole 42 into the sliding space and contacts the pressure plate 41. As the adjusting screw 43 rotates in the adjusting screw hole 42, it compresses or releases the first spring 322, thereby adjusting the force applied to the limiting block 31. Specifically, the housing 1 is also provided with a torque scale 15 parallel to the moving direction of the adjusting screw 43, which facilitates adjusting the pressure of the limiting block 31 according to the height of the adjusting screw 43.

[0031] In use, the adjusting screw 43 is raised and lowered according to the required installation torque of the cleaning tip, causing the pressure plate 41 to rise and fall within the mounting base 321 to adjust the compression of the first spring 322, thereby adjusting the force applied to the gear 22 by the limiting block 31. During installation, the cleaning tip is placed on the dental scaler and passed through the clearance hole 12 to engage with the Allen wrench 23. The housing 1 is then rotated to tighten the cleaning tip. When the cleaning tip is not tightened, the force applied to the gear 22 by the limiting block 31 is greater than the upward thrust exerted on the limiting block 31 by the rotation of the gear 22. At this time, the gear 22 rotates with the housing 1 to drive the Allen wrench 23 to continue locking the cleaning tip. When the cleaning tip is tightened, the force applied to the gear 22 by the limiting block 31 is less than the upward thrust exerted on the limiting block 31 by the rotation of the gear 22. At this time, as the housing 1 continues to rotate, the gear 22 will slip off the limiting block 31, preventing the Allen wrench 23 from continuing to rotate and damaging the dental scaler.

[0032] Example 2:

[0033] Reference Figures 4 to 7 As shown, the difference between this embodiment and Embodiment 1 is that:

[0034] The limiting component 32 includes a rotating plate 323 and a second spring 324. The rotating plate 323 is rotatably disposed inside the housing 1, and the limiting block 31 is disposed at one end of it, located above the gear 22 and can move away from or closer to the gear 22 as it rotates. The second spring 324 is connected to the other end of the rotating plate 323 and is located on both sides of the rotating shaft with the limiting block 31. It applies an upward pulling force to the other end of the rotating plate 323 so that the limiting block 31 has a tendency to always move downward.

[0035] The adjusting mechanism 4 includes a sliding groove 44, a limiting groove 45, and a sliding rod 46. The sliding groove 44 is formed on the housing 1 and is parallel to the extending direction of the second spring 324. Several limiting grooves 45 are provided, extending outward from the side of the sliding groove 44. The sliding rod 46 is connected to the bottom of the second spring 324 and can drive the second spring 324 to extend or shorten. The sliding rod 46 extends from outside the housing 1 into the sliding groove 44 and moves within it, and can enter the limiting groove 45 to fix the second spring 324. Specifically, the limiting groove 45 includes an extension section 451 extending vertically outward from the side of the sliding groove 44 and a limiting section 452 formed from the end of the extension section 451 towards the spring. The second spring 324 is connected to the other end of the rotating plate 323 via a traction rope, and the second spring 324 is arranged on the other side via the traction rope, thus arranging the space reasonably. The extension of the second spring 324 is adjusted by moving the sliding rod 46 to adjust its tension. The tension applied to the rotating plate 323 is converted into a force applied downward to the gear 22 by the limiting block 31 due to the influence of the rotating shaft.

[0036] It also includes a fixing mechanism 5, which includes a fixing block 51 rotatably disposed in the housing 1 and a handle 52 for driving the fixing block 51 to rotate. The fixing block 51 includes a rotating section 511 and a fixing section 512. The rotating section 511 is rotatably disposed in the housing 1, and an operating rod is formed extending outward from the rotating section 511. The rotating section 511 rotates around the operating rod, and the operating rod is threadedly connected to the housing 1 to ensure that the fixing block 51 can be fixedly supported when rotating. The fixing section 512 is disposed at the end of the rotating section 511 and can rotate with the rotating section 511 to contact the bottom of the rotating plate 323 to restrict its rotation.

[0037] In use, the sliding rod 46 is moved according to the required installation torque of the cleaning tip to adjust the extension of the second spring 324, thereby adjusting the force applied to the gear 22 by the limiting block 31. During installation, the cleaning tip is placed on the dental scaler and passed through the clearance hole 12 to engage with the Allen wrench 23. The housing 1 is then rotated to tighten the cleaning tip. When the cleaning tip is not tightened, the force applied to the gear 22 by the limiting block 31 is greater than the upward thrust exerted on the limiting block 31 by the rotation of the gear 22. At this time, the gear 22 rotates with the housing 1 to drive the Allen wrench 23 to continue locking the cleaning tip. When the cleaning tip is tightened, the force applied to the gear 22 by the limiting block 31 is less than the upward thrust exerted on the limiting block 31 by the rotation of the gear 22. At this time, as the housing 1 continues to rotate, the gear 22 will slip off the limiting block 31, preventing the Allen wrench 23 from continuing to rotate and damaging the dental scaler.

[0038] This application allows for rapid adjustment of the force applied to the gear 22 by the limiting block 31 via the adjustment mechanism 4. This enables the pressure of the limiting block 31 to be adapted to the torque required for locking different dental cleaning tips, precisely controlling the torque to adapt to different dental cleaning devices, preventing damage during installation, and providing fast and efficient torque adjustment with high practicality.

[0039] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present utility model shall still fall within the scope of the patent of the present utility model.

Claims

1. A torque wrench for dental flossers, characterized in that: The device includes a housing, a wrench assembly, a limiting mechanism, and an adjusting mechanism. The housing has an internal cavity for accommodating components, and a clearance hole on one side of the housing, communicating with the cavity and allowing the dental floss head to extend into it. The wrench assembly, rotatably mounted within the cavity, includes a socket, a gear, and an internal hex wrench. The socket is coaxially and rotatably mounted within the cavity with the clearance hole. The gear is located on the outer side of the socket and rotates with it. The internal hex wrench is located on the inner side of the socket, opposite the clearance hole, and adapted to the dental floss head. The limiting mechanism includes a limiting block and a limiting assembly. The limiting block can move upwards to above the gear tooth tip or downwards to contact the gear tooth root. The limiting assembly is connected to the limiting block and always tends to move towards the gear. The adjusting mechanism is connected to the limiting assembly to adjust the force applied by the limiting assembly to the limiting block.

2. A torque wrench for a dental flosser according to claim 1, characterized in that: The limiting block is vertically and vertically mounted above the gear. The limiting assembly includes a mounting base and a first spring. The mounting base is disposed in a receiving cavity, and a sliding space for the limiting block to move is formed inside. The first spring is disposed in the mounting base and applies a downward force to the limiting block.

3. A torque wrench for a dental flosser according to claim 2, characterized in that: The adjustment mechanism includes a pressure plate, an adjustment screw hole, and an adjustment screw rod. The pressure plate is movably disposed in the mounting base and connected to the top surface of the first spring. An adjusting screw hole is formed on the surface of the housing and communicates with the sliding space in the mounting base; the adjusting screw extends from the adjusting screw hole into the sliding space and contacts the pressure plate, and the force applied to the limiting block is adjusted by the rotation of the adjusting screw in the adjusting screw hole to compress or release the first spring.

4. A torque wrench for a dental flosser according to claim 3, characterized in that: The housing is also provided with a torque scale parallel to the direction of movement of the adjusting screw.

5. A torque wrench for a dental flosser according to claim 1, characterized in that: The limiting component includes a rotating plate and a second spring. The rotating plate is rotatably disposed within the housing, and the limiting block is disposed at one end of the plate, located above the gear and moving away from or closer to the gear as it rotates. The second spring is connected to the other end of the rotating plate and is located on both sides of the rotating shaft, respectively, and applies an upward pulling force to the other end of the rotating plate so that the limiting block has a tendency to always move downward.

6. A torque wrench for a dental flosser according to claim 5, characterized in that: The adjustment mechanism includes a sliding groove, a limiting groove, and a sliding rod. The sliding groove is formed on the housing and is parallel to the extension direction of the second spring. Several limiting grooves are provided and extend outward from the side of the sliding groove. The sliding rod is connected to the bottom of the second spring and can drive the second spring to extend or shorten. The sliding rod is movably disposed in the sliding groove and enters the limiting groove to fix the second spring.

7. A torque wrench for a dental flosser according to claim 6, characterized in that: The limiting groove includes an extension section extending vertically outward from the side of the sliding groove and a limiting section formed from the end of the extension section toward the spring.

8. A torque wrench for a dental flosser according to claim 5, characterized in that: The second spring is connected to the other end of the rotating plate via a traction rope.

9. A torque wrench for a dental flosser according to claim 5, characterized in that: It also includes a fixing mechanism, which includes a fixing block rotatably disposed in the housing and a handle for driving the fixing block to rotate. The fixing block includes a rotating section and a fixing section. The rotating section is rotatably disposed in the housing. The fixing section is disposed at the end of the rotating section and can rotate with the rotating section to contact the bottom of the rotating plate to restrict its rotation.

10. A torque wrench for a dental flosser according to claim 1, characterized in that: The housing is also provided with mounting plates. There are two mounting plates, which are distributed along the axial direction of the sleeve and located on both sides of the gear. The mounting plates are formed with through holes for the gear to pass through. The limiting mechanism and the adjusting mechanism are arranged between the two mounting plates.

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