Belt tightness adjusting device and trephine

Abstract

The invention provides a belt tightness adjusting device and a trephine, and relates to the technical field of cutting tools, the belt tightness adjusting device provided by the invention comprises a shell, an operation assembly and a tensioning mechanism; the tensioning mechanism is movably connected to the interior of the shell; the operation assembly is movably matched with the shell, the outer end of the operation assembly extends out of the shell, the inner end of the operation assembly extends into the shell and is connected with the tensioning mechanism, and the operation assembly is configured to drive the tensioning mechanism to move relative to the shell so as to adjust the position of the tensioning end in the tensioning mechanism. According to the belt tightness adjusting device, the position of the tensioning end can be adjusted from the outside of the shell, the shell does not need to be disassembled, time and labor are saved, and the phenomenon that parts are lost and forgotten to be installed in the adjusting process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting tools, in particular to a belt tension adjusting device and a ring saw. Background Art

[0002] As a common cutting tool, ring saws typically rely on a belt drive system for power transmission. A motor drives a driving pulley, which in turn rotates a driven pulley, driving the saw blade for cutting. To ensure efficient transmission, the belt needs to be properly tensioned.

[0003] In existing technology, the belt adjustment mechanism of a circular saw is typically located inside the device, enclosed within a protective end cap housing along with the transmission system. When the belt becomes loose due to wear or stretching over time, the operator must first remove the end cap fixing bolts and the entire end cap assembly to access the belt adjustment mechanism. This requires disassembling the device every time the belt is adjusted, which is not only time-consuming and labor-intensive, but also prone to losing screws or forgetting to install parts such as gaskets during the disassembly process. Summary of the Invention

[0004] The present invention is directed to a belt tensioning device that can adjust the tensioning end position from outside a housing without removing the housing, saving time and effort, and preventing the loss or forgetfulness of installed components during the adjustment process. A ring saw incorporating the belt tensioning device is also provided.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: In a first aspect, the present invention provides a belt tension adjustment device, comprising a housing, an operating assembly, and a tensioning mechanism; The tensioning mechanism is movably connected to the interior of the housing; The operating component is movably engaged with the shell, the outer end of the operating component extends out of the shell, the inner end of the operating component extends into the shell and is connected to the tensioning mechanism, and the operating component is configured to drive the tensioning mechanism to move relative to the shell to adjust the position of the tensioning end in the tensioning mechanism.

[0006] In an optional embodiment, the operating component includes a button having the outer end and the inner end, and the button is slidably engaged with the housing along a direction from the outer end to the inner end.

[0007] In an optional embodiment, the operating assembly further includes a sealing member, which is disposed between the button and the housing.

[0008] In an optional embodiment, the tensioning mechanism includes a bracket assembly, an adjustment assembly, and a roller assembly; The bracket assembly has the tensioning end, the operating assembly and the housing are respectively rotatably connected to the bracket assembly, and the operating assembly is parallel to the rotation axis of the bracket assembly and spaced from the rotation axis of the housing and the bracket assembly; The adjustment assembly is connected between the bracket assembly and the housing, the adjustment assembly has an adjustment end extending out of the housing, and the adjustment assembly is used to lock the position of the bracket assembly relative to the housing and unlock the position of the bracket assembly relative to the housing; The roller assembly is connected to the tensioning end of the bracket assembly.

[0009] In an optional embodiment, one end of the bracket assembly is rotatably connected to the housing, and the other end has the tensioning end, and the operating assembly is rotatably connected between the two ends of the bracket assembly.

[0010] In an optional embodiment, the bracket assembly includes a first bracket, a second bracket and a connecting member, the connecting member, the adjustment assembly and the roller assembly are all connected between the first bracket and the second bracket, and the operating assembly is rotatably connected to the connecting member.

[0011] In an optional embodiment, the roller assembly includes a roller body, a bearing, a positioning structure and a first locking member, the first locking member is locked to the bracket assembly, the bearing is sleeved on the outside of the first locking member, the positioning structure cooperates with the bearing to limit the axial position of the bearing relative to the first locking member, and the roller body is sleeved on the outside of the bearing.

[0012] In an optional embodiment, the adjustment assembly includes a second locking member and a positioning member, the positioning member is arranged in the bracket assembly, one end of the second locking member is the adjustment end, and the other end passes through the bracket assembly and the positioning member and is detachably connected to the shell.

[0013] In an optional embodiment, the adjustment assembly further includes an anti-slip structure, wherein the anti-slip structure is provided between the second locking member and the bracket assembly, and / or the anti-slip structure is provided between the bracket assembly and the housing.

[0014] In a second aspect, the present invention provides a ring saw comprising a belt tension adjustment device as described in any one of the aforementioned embodiments.

[0015] The belt tension adjustment device and ring saw provided by the present invention can produce the following beneficial effects: Compared with the prior art, the belt tension adjustment device provided by the present invention can be operated from the outside of the housing to adjust the tensioning end position without removing the housing, saving time and effort, and there will be no loss or forgetting of installed parts during the adjustment process.

[0016] The ring saw provided in the second aspect of the present invention has the belt tension adjusting device provided in the first aspect of the present invention, thereby having all the beneficial effects of the belt tension adjusting device provided in the first aspect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A front view of a belt tension adjustment device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the internal structure of a belt tension adjustment device provided by an embodiment of the present invention; Figure 3 A cross-section of a belt tension adjustment device provided by an embodiment of the present invention Figure 1 ; Figure 4 A cross-section of a belt tension adjustment device provided by an embodiment of the present invention Figure 2 ; Figure 5 An exploded view of a belt tension adjustment device provided by an embodiment of the present invention.

[0019] Icons: 1-housing; 11-first shell; 12-second shell; 2-operating assembly; 21-button; 211-pressing part; 212-sliding part; 22-seal; 221-ring groove; 3-tensioning mechanism; 31-bracket assembly; 311-first bracket; 312-second bracket; 313-connecting part; 32-adjusting assembly; 321-second locking part; 322-positioning part; 323-anti-slip structure; 33-roller assembly; 331-roller body; 332-bearing; 333-positioning structure; 3331-positioning sleeve; 3332-elastic retaining ring; 334-first locking part; 4-belt; 5-driving wheel; 6-driven wheel. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0024] The embodiment of the first aspect of the present invention is to provide a belt tension adjustment device, such as Figure 1 and Figure 2 As shown, it includes a housing 1, an operating component 2 and a tensioning mechanism 3; The tensioning mechanism 3 is movably connected to the interior of the housing 1; The operating component 2 is movably engaged with the housing 1, the outer end of the operating component 2 extends out of the housing 1, and the inner end of the operating component 2 extends into the housing 1 and is connected to the tensioning mechanism 3. The operating component 2 is configured to drive the tensioning mechanism 3 to move relative to the housing 1 to adjust the position of the tensioning end in the tensioning mechanism 3.

[0025] In the belt tensioning adjustment device provided by the embodiment of the first aspect of the present invention, when the belt needs to be tensioned, the operating component 2 can be extended from the end of the shell 1 to realize the movement of the operating component 2, thereby driving the tensioning mechanism 3 to move relative to the shell 1, adjusting the position of the tensioning end, and achieving the tensioning effect on the belt 4.

[0026] The belt tension adjustment device can be operated from the outside of the housing 1 to adjust the tensioning end position without removing the housing, saving time and effort, and there will be no loss or forgetfulness of installed parts during the adjustment process.

[0027] There are many ways in which the operating component 2 and the shell 1 can be movably coordinated. For example, the operating component 2 is threadedly connected to the shell 1, and the user can rotate the outer end of the operating component 2 from the outside of the shell 1, so that the inner end of the operating component 2 gradually penetrates into the shell 1, driving the tensioning mechanism 3 to move relative to the shell 1; or the operating component 2 is rotatably connected to the shell 1, and the user can press or lift the outer end of the operating component 2 from the outside of the shell 1, so that the inner end of the operating component 2 drives the tensioning mechanism 3 to move relative to the shell 1.

[0028] In an optional embodiment, if Figure 2 As shown, the operating assembly 2 includes a button 21 , which has an outer end and an inner end. The button 21 is slidably engaged with the housing 1 in a direction from the outer end to the inner end.

[0029] During use, the user can press the button to make the inner end of the button 21 go deeper into the shell 1, thereby driving the tensioning mechanism 3 to move relative to the shell 1, adjusting the position of the tensioning end in the tensioning mechanism 3, and tensioning the belt 4 in the shell 1.

[0030] The operating assembly 2 includes a button 21 , and the user can adjust the position of the button 21 by pressing it, making the operation more convenient and simple.

[0031] Specifically, if Figure 2 As shown, the button 21 includes a pressing portion 211 and a sliding portion 212. The pressing portion 211 is located outside the housing 1. One end of the sliding portion 212 extends out of the housing 1 and connects to the pressing portion 211, while the other end extends into the interior of the housing 1 and connects to the tensioning mechanism 3. The pressing portion 211 and the sliding portion 212 are both cylindrical, and the outer diameter of the pressing portion 211 is larger than that of the sliding portion 212.

[0032] The above design can increase the contact area between the button 21 and the finger, so that the user has a better tactile feeling when pressing the button 21.

[0033] In an optional embodiment, if Figure 2 As shown, since the button 21 and the housing 1 are in sliding cooperation, in order to ensure a better sealing between the button 21 and the housing 1 , the operating assembly 2 further includes a sealing member 22 , which is provided between the button 21 and the housing 1 .

[0034] The sealing member 22 can compensate for the gap between the button 21 and the housing 1 , thereby preventing dust and other substances from entering the housing 1 through the gap therebetween.

[0035] The outer surface of the sealing member 22 has an annular groove 221 , and the housing 1 is inserted into the annular groove 221 , thereby ensuring that the sealing member 22 does not move with the button 21 when the button 21 slides relative to the housing 1 .

[0036] The material of the sealing member 22 may be, but is not limited to, rubber.

[0037] It should be noted that any structure that can be moved relative to the housing 1 to tighten the belt 4 under the drive of the operating assembly 2 can be the tensioning mechanism 3 mentioned in the above embodiment. For example, the tensioning mechanism 3 may include a sliding block that moves and tightens the belt 4 under the drive of the operating assembly 2; or the tensioning mechanism 3 may include a swinging member that swings and tightens the belt 4 under the drive of the operating assembly 2, etc.

[0038] In an optional embodiment, if Figure 2 As shown, the tensioning mechanism 3 includes a bracket assembly 31, an adjustment assembly 32 and a roller assembly 33; the bracket assembly 31 has a tensioning end, the operating assembly 2 and the housing 1 are respectively rotatably connected to the bracket assembly 31, and the rotation axis of the operating assembly 2 and the bracket assembly 31 are parallel and spaced from the rotation axis of the housing 1 and the bracket assembly 31; the adjustment assembly 32 is connected between the bracket assembly 31 and the housing 1, and the adjustment assembly 32 has an adjustment end extending out of the housing 1, and the roller assembly 33 is connected to the tensioning end of the bracket assembly 31.

[0039] The rotation axis of the operating component 2 and the bracket component 31 is set as the first axis, and the rotation axis of the shell 1 and the bracket component 31 is set as the second axis. Since the first axis is parallel to the second axis and is arranged at intervals, when the button 21 in the operating component 2 is pressed down, it will drive the bracket component 31 to rotate relative to the shell 1, so that the roller component 33 tightens the belt 4. After the tensioning is completed, the position of the bracket component 31 relative to the shell 1 can be locked by adjusting the component; when the tension of the belt 4 needs to be adjusted later, the lock of the position of the bracket component 31 relative to the shell 1 can be released by adjusting the component.

[0040] In the above embodiment, the adjustment assembly 32 is provided to ensure that the bracket assembly 31 can stably press the belt 4 and keep the belt 4 in a tensioned state.

[0041] In an optional embodiment, if Figure 2 As shown, one end of the bracket assembly 31 is hinged to the housing 1 , and the other end has a tensioning end, and the operating assembly 2 is hinged between the two ends of the bracket assembly 31 .

[0042] The advantage of the above embodiment is that the positional rotational fit between the operating assembly 2 and the two ends of the bracket assembly 31 makes the matching structure of the operating assembly 2 and the tensioning mechanism 3 more compact, and the volume of the housing 1 can be designed to be smaller.

[0043] In an optional embodiment, if Figure 3 As shown, the bracket assembly 31 includes a first bracket 311, a second bracket 312 and a connecting member 313. The connecting member 313, the adjustment assembly 32 and the roller assembly 33 are all connected between the first bracket 311 and the second bracket 312. The operating assembly 2 is rotatably connected to the connecting member 313.

[0044] The connector 313 connects the first bracket 311 and the second bracket 312. Specifically, it can be a bolt that penetrates the first bracket 311 and is locked to the second bracket 312. Furthermore, the adjustment assembly 32 and the roller assembly 33 also connect the first bracket 311 and the second bracket 312. Together, the three ensure the stability of the first bracket 311 relative to the second bracket 312.

[0045] When in use, the button 21 in the operating assembly 2 can be hinged to the connecting member 313 , and the connecting member 313 drives the bracket assembly 31 to swing relative to the housing 1 .

[0046] In an optional embodiment, if Figure 3 As shown, the roller assembly 33 includes a roller body 331, a bearing 332, a positioning structure 333 and a first locking member 334. The first locking member 334 is locked to the bracket assembly 31, the bearing 332 is sleeved on the outside of the first locking member 334, the positioning structure 333 cooperates with the bearing 332 to limit the axial position of the bearing 332 relative to the first locking member 334, and the roller body 331 is sleeved on the outside of the bearing 332.

[0047] The first locking member 334 serves to connect the first bracket 311 and the second bracket 312, while also providing a mounting point for the bearing 332 and the positioning structure 333. Because the roller body 331 is mounted externally of the bearing 332, the roller body 331 can rotate relative to the bracket assembly 31 while pressing against the belt 4, thereby reducing friction with the belt 4. The positioning structure 333 defines the axial position of the bearing 332 relative to the first locking member 334, limiting the bearing 332 and ensuring its stable mounting externally of the first locking member 334.

[0048] Specifically, if Figure 3 As shown, two bearings 332 are provided so that the roller body 331 can stably rotate relative to the first locking member 334 .

[0049] The first locking member 334 may include a bolt and a nut, and the bolt passes through the first bracket 311 and the second bracket 312 and is then locked by the nut.

[0050] In addition, if Figure 3As shown, the positioning structure 333 includes a positioning sleeve 3331, which is sleeved on the outside of the first locking member 334, and the positioning sleeve 3331 can be configured as more than one. The first positioning sleeve 3331 is located between the two bearings 332, the second positioning sleeve 3331 is located between one of the bearings 332 and the first bracket 311, and the third positioning sleeve 3331 is located between the other bearing 332 and the second bracket 312.

[0051] like Figure 3 As shown, the positioning structure 333 can also include a hole elastic retaining ring 3332, which is clamped on the inner wall of the roller body 331 and protrudes from the inner wall, and abuts against the right end face of the bearing 332 close to the first bracket 311 to limit the axial position of the bearing 332.

[0052] In an optional embodiment, if Figure 4 As shown, the adjustment assembly 32 includes a second locking member 321 and a positioning member 322. The positioning member 322 is arranged between the first bracket 311 and the second bracket 312. One end of the second locking member 321 is the adjustment end, and the other end passes through the first bracket 311, the positioning member 322, and the second bracket 312 and is detachably connected to the shell 1.

[0053] When the position of the bracket assembly 31 needs to be adjusted, the second locking member 321 can be adjusted through the adjustment end to allow the bracket assembly 31 to rotate relative to the shell 1. After the adjustment is completed, the second locking member 321 can be adjusted through the adjustment end to lock the position of the bracket assembly 31 relative to the shell 1.

[0054] In addition, the positioning member 322 can define the position of the first bracket 311 relative to the second bracket 312 .

[0055] The second locking member 321 may be a screw that is threadably matched with the housing 1 to facilitate loosening and tightening of the second locking member 321 .

[0056] The positioning member 322 may be a shaft sleeve, which is located between the first bracket 311 and the second bracket 312 . The shaft sleeve is sleeved on the outside of the second locking member 321 and is threadedly connected to the second locking member 321 .

[0057] In an optional embodiment, the adjustment assembly 32 also includes an anti-slip structure 323, which is arranged between the second locking member 321 and the bracket assembly 31. For example, the anti-slip structure 323 may include an internal thread arranged on the first bracket 311 and the second bracket 312. The external thread on the second locking member 321 can cooperate with the internal thread on the first bracket 311 and the second bracket 312 to prevent the second locking member 321 from loosening after long-term use.

[0058] Of course, the anti-slip structure 323 may also be anti-slip teeth on the second locking member 321 .

[0059] In an optional embodiment, if Figure 4 As shown, the anti-slip structure 323 is arranged between the bracket assembly 31 and the shell 1. For example, the anti-slip structure 323 may include a gasket, which is clamped between the second bracket 312 and the shell 1. The second locking member 321 passes through the gasket, and the end face of the gasket may be provided with a serrated structure, thereby increasing the friction between the second bracket 312 and the shell 1 and playing an anti-slip role.

[0060] In an optional embodiment, if Figure 5 As shown, the housing 1 includes a first shell 11 and a second shell 12, which are snap-fitted and installed to form a cavity. A driving wheel 5 and a driven wheel 6 are provided in the cavity. The belt 4 is arranged between the driving wheel 5 and the driven wheel 6. The tensioning mechanism 3 is rotatably connected to the cavity, and the adjusting end of the second locking member 321 extends from the second shell 12.

[0061] An embodiment of the second aspect of the present invention provides a ring saw. The ring saw provided by the embodiment of the second aspect of the present invention includes the above-mentioned belt tension adjustment device.

[0062] The ring saw provided in the embodiment of the second aspect of the present invention has the belt tension adjusting device provided in the embodiment of the first aspect of the present invention, thereby having all the beneficial effects of the belt tension adjusting device provided in the embodiment of the first aspect of the present invention.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A belt tension adjustment device, characterized in that: It comprises a housing (1), an operating assembly (2) and a tensioning mechanism (3); The tensioning mechanism (3) is movably connected to the interior of the housing (1); The operating component (2) is movably engaged with the housing (1), the outer end of the operating component (2) extends out of the housing (1), the inner end of the operating component (2) extends into the housing (1) and is connected to the tensioning mechanism (3), and the operating component (2) is configured to drive the tensioning mechanism (3) to move relative to the housing (1) to adjust the position of the tensioning end in the tensioning mechanism (3).

2. The belt tension adjustment device according to claim 1, characterized in that: The operating assembly (2) comprises a button (21), the button (21) having the outer end and the inner end, and the button (21) slidingly cooperates with the housing (1) along the direction from the outer end to the inner end.

3. The belt tension adjustment device according to claim 2, characterized in that: The operating assembly (2) further includes a sealing member (22), wherein the sealing member (22) is provided between the button (21) and the housing (1).

4. The belt tension adjustment device according to claim 1, characterized in that: The tensioning mechanism (3) comprises a bracket assembly (31), an adjustment assembly (32) and a roller assembly (33); The bracket assembly (31) has the tensioning end, the operating assembly (2) and the housing (1) are respectively rotatably connected to the bracket assembly (31), and the operating assembly (2) is parallel to the rotation axis of the bracket assembly (31) and spaced from the rotation axis of the housing (1) and the bracket assembly (31); The adjusting assembly (32) is connected between the bracket assembly (31) and the housing (1), the adjusting assembly (32) having an adjusting end extending out of the housing (1), and the adjusting assembly (32) is used to lock the position of the bracket assembly (31) relative to the housing (1) and unlock the position of the bracket assembly (31) relative to the housing (1); The roller assembly (33) is connected to the tensioning end of the bracket assembly (31).

5. The belt tension adjustment device according to claim 4, characterized in that: One end of the bracket assembly (31) is rotatably connected to the housing (1), and the other end has the tensioning end. The operating assembly (2) is rotatably connected between the two ends of the bracket assembly (31).

6. The belt tension adjustment device according to claim 4, characterized in that: The bracket assembly (31) comprises a first bracket (311), a second bracket (312) and a connecting member (313); the connecting member (313), the adjustment assembly (32) and the roller assembly (33) are all connected between the first bracket (311) and the second bracket (312); and the operating assembly (2) is rotatably connected to the connecting member (313).

7. The belt tension adjustment device according to claim 4, characterized in that: The roller assembly (33) comprises a roller body (331), a bearing (332), a positioning structure (333) and a first locking member (334), wherein the first locking member (334) is locked to the bracket assembly (31), the bearing (332) is sleeved on the outside of the first locking member (334), the positioning structure (333) cooperates with the bearing (332) to limit the axial position of the bearing (332) relative to the first locking member (334), and the roller body (331) is sleeved on the outside of the bearing (332).

8. The belt tension adjustment device according to claim 4, characterized in that: The adjustment assembly (32) comprises a second locking member (321) and a positioning member (322). The positioning member (322) is arranged in the bracket assembly (31). One end of the second locking member (321) is the adjustment end, and the other end passes through the bracket assembly (31) and the positioning member (322) and is detachably connected to the housing (1).

9. The belt tension adjustment device according to claim 8, characterized in that: The adjustment assembly (32) further includes an anti-slip structure (323), wherein the anti-slip structure (323) is provided between the second locking member (321) and the bracket assembly (31), and / or the anti-slip structure (323) is provided between the bracket assembly (31) and the housing (1).

10. A ring saw, characterized in that: The invention comprises a belt tension adjusting device according to any one of claims 1 to 9.

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