Chain saw with quick release function

Abstract

The utility model discloses a chain saw with a quick release function. The chain saw comprises a chain saw main machine and a chain plate assembly, the chain plate assembly is located on the right side of the chain saw main machine, a cover body used for covering the rear end of the chain plate assembly is arranged on the right side of the chain saw main machine, the chain saw main machine is connected with the chain plate assembly through a quick release assembly, and a main driving wheel is arranged on the right end face of the chain saw main machine. A chain saw chain is in power connection between the chain plate assembly and the main driving wheel, the quick release assembly comprises a guide hole formed in the right side of the chain saw main machine, the guide hole is formed in the front-back direction, a sliding block capable of sliding along the guide hole is arranged in the guide hole, and the right end of the sliding block extends out of the guide hole and is connected with the chain plate assembly. A locking assembly and a driving assembly are arranged on the chain saw main machine, the locking assembly is used for locking / unlocking the sliding block, and the driving assembly is used for driving the sliding block to move. The chain saw chain can be rapidly replaced, the replacement efficiency is high, and consumed time is short.

Description

Technical Field

[0001] The utility model relates to the technical field of chain saws, in particular to a chain saw with a quick-release function. Background Art

[0002] A chain saw is a commonly used electric tool, mostly used for cutting wood. After a chain saw is used for a period of time, the chain saw chain is worn due to the reaction force of the wood on the chain saw chain during cutting, which reduces the cutting performance of the chain saw. When the chain saw chain is worn out and cannot continue to work, the chain saw chain needs to be replaced. The prior art is to remove the main drive wheel that needs to drive the chain saw chain to rotate, then remove the loosened chain saw chain from the chain plate assembly, replace the new chain saw chain, and then reinstall the main drive wheel to complete the replacement of the chain saw chain. This replacement of the chain saw chain is not only inefficient but also time-consuming. Summary of the invention

[0003] In order to solve the above technical problems, the utility model provides a chain saw with a quick-release function, which can quickly replace the chain saw chain with high replacement efficiency and short time consumption.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a chain saw with a quick-release function, comprising a chain saw main body and a chain plate assembly, wherein the chain plate assembly is located on the right side of the chain saw main body, a cover body for covering the rear end of the chain plate assembly is arranged on the right side of the chain saw main body, the chain saw main body is connected to the chain plate assembly through the quick-release assembly, a main driving wheel is arranged on the right end surface of the chain saw main body, a chain saw chain is connected between the chain plate assembly and the main driving wheel by power, the quick-release assembly comprises a guide hole arranged on the right side of the chain saw main body, the guide hole is arranged in a front-rear direction, a slider which can slide along the guide hole is arranged in the guide hole, the right end of the slider extends out of the guide hole and is connected to the chain plate assembly, a locking assembly and a driving assembly are arranged on the chain saw main body, the locking assembly is used to lock / unlock the slider, and the driving assembly is used to drive the slider to move.

[0006] In this solution, when the chain saw chain is excessively worn and cannot continue to work, the driving assembly drives the slider to move backward, and the slider drives the chain plate assembly to move backward. The main drive wheel and the chain plate assembly no longer support the chain saw chain. At this time, the chain saw chain can be replaced. After the replacement is completed, the driving assembly drives the slider to move forward, and the slider drives the chain plate assembly to move forward. After the slider has moved, the locking assembly locks the slider, and the main drive wheel and the chain plate assembly tighten the chain saw chain.

[0007] Preferably, the driving assembly includes a driving rod, a working chamber is provided in the chain saw main body, a notch is provided on the top of the chain saw main body, the notch is connected to the working chamber, the notch is arranged in a front-to-back direction, the driving rod extends into the notch and is connected to the slider.

[0008] Preferably, a guide rod is provided in the guide hole, the guide rod is arranged to run forward and backward, the slider is sleeved on the guide rod, a spring is sleeved on the outer wall of the guide rod, and the spring is arranged between the slider and the front side wall of the guide hole.

[0009] Preferably, the locking assembly includes a locking rod, a working chamber is provided in the chainsaw main body, a locking hole is provided on the top front side of the slider, a through hole is provided on the top front side of the chainsaw main body extending upward and downward, the through hole is connected to the working chamber, the locking rod passes through the through hole and is threadedly connected to the through hole, the upper part of the locking rod extends out of the chainsaw main body and is provided with a knob, the lower part of the locking rod extends into the working chamber, and when the slider slides to contact the front side wall of the guide hole, the locking hole is located directly below the locking rod, and the bottom end of the locking rod can extend into the locking hole.

[0010] Preferably, the chain plate assembly includes a slider connecting plate, a rear chain plate, a front chain plate and a fine-tuning mechanism, the left side of the slider connecting plate is fixedly connected to the right end face of the slider, the rear chain plate is fixedly connected to the right rear end of the slider connecting plate, the main drive wheel is located on the rear side of the rear chain plate, the front chain plate is located on the front side of the rear chain plate, and the fine-tuning mechanism is used to drive the front chain plate to move forward and backward along the slider connecting plate.

[0011] Preferably, the fine-tuning mechanism includes a guide block and a fine-tuning drive device, the guide block is fixedly connected to the right side of the slider connecting plate, the front chain plate is provided with a guide block sliding hole corresponding to the guide block position, the guide block sliding hole is arranged in a forward and backward direction, the guide block extends into the guide block sliding hole and can slide along the guide block sliding hole, and the fine-tuning drive device is used to drive the front chain plate to move forward and backward.

[0012] Preferably, the fine-tuning drive device includes a fine-tuning rotating rod and a screw rod arranged on the rear chain plate, the fine-tuning rotating rod is rotatably connected to the rear chain plate, the screw rod is rotatably connected to the cover body, the fine-tuning rotating rod is arranged to extend left and right, the right side of the fine-tuning rotating rod passes through the cover body, the right end of the fine-tuning rotating rod is fixedly connected with a fine-tuning knob, the middle part of the fine-tuning rotating rod is fixedly connected with a first bevel gear, the screw rod is arranged to extend forward and backward, and a second bevel gear meshing with the first bevel gear is arranged on the screw rod, a pushing block is fixedly connected to the right side of the front chain plate, and the pushing block is threadedly connected to the screw rod.

[0013] When a chain saw chain is used for a long time, it will become loose due to wear. The fine-tuning knob is rotated to drive the fine-tuning rotating rod and the first bevel gear to rotate. The first bevel gear drives the second bevel gear to rotate synchronously, thereby driving the lead screw to rotate. After the lead screw rotates, it drives the front chain plate forward through the push block, the guide block and the guide block slide hole, thereby extending the distance between the front chain plate and the rear chain plate, so that the slack chain is tensioned.

[0014] Preferably, the fine-tuning mechanism also includes a front chain plate locking module, which includes a locking screw and a front chain plate pressure block. The locking screw is fixedly connected to the left side of the front chain plate pressure block, the left side of the locking screw passes through the guide block sliding hole and is threadedly connected to the slider connecting plate, the locking screw is located between the guide block and the front side wall of the guide block sliding hole, the right side of the locking screw passes through the cover body, and the right end of the locking screw is fixedly connected with a locking knob.

[0015] Rotate the locking knob to drive the locking screw and the front chain plate pressing block away from / close to the slider connecting plate, thereby unlocking / locking the front chain plate pressing block and the slider connecting plate.

[0016] The beneficial effects of the utility model are as follows: the driving component can drive the slider to move forward and backward; the locking component can lock / unlock the slider; the fine-tuning driving device can make the front chain plate move forward and backward along the slider connecting plate so as to tension the slightly worn chain saw chain; the front chain plate locking module can unlock / lock the front chain plate pressure block and the slider connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the quick-release assembly in the utility model;

[0019] Figure 3 It is a partial enlarged structural schematic diagram of the chain plate assembly in the utility model.

[0020] In the figure: 1. chain saw mainframe, 11. main driving wheel, 12. chain saw chain, 2. chain plate assembly, 21. slider connecting plate, 22. rear chain plate, 23. front chain plate, 24. guide block slide hole, 3. cover body, 4. quick release assembly, 41. guide hole, 42. slider, 43. guide rod, 5. drive assembly, 51. drive rod, 52. notch, 6. locking assembly, 61. locking rod, 7. fine-tuning mechanism, 71. guide block, 8. fine-tuning drive device, 81. fine-tuning rotating rod, 811. fine-tuning knob, 82. screw, 83. first bevel gear, 84. second bevel gear, 85. pushing block, 9. front chain plate locking module, 91. front chain plate pressure block, 92. locking knob. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] Embodiment: A chain saw with a quick release function in this embodiment, such as Figures 1 to 3 As shown, it includes a chain saw main body 1 and a chain plate assembly 2, the chain plate assembly 2 is located on the right side of the chain saw main body 1, and a cover body 3 for covering the rear end of the chain plate assembly 2 is arranged on the right side of the chain saw main body 1, the chain saw main body 1 is connected to the chain plate assembly 2 through a quick release assembly 4, a main driving wheel 11 is arranged on the right end face of the chain saw main body 1, and a chain saw chain 12 is dynamically connected between the chain plate assembly 2 and the main driving wheel 11, the quick release assembly 4 includes a guide hole 41 arranged on the right side of the chain saw main body 1, the guide hole 41 is arranged in a front-to-back direction, a slider 42 that can slide along the guide hole 41 is arranged in the guide hole 41, the right end of the slider 42 extends out of the guide hole 41 and is connected to the chain plate assembly 2, and a locking assembly 6 and a driving assembly 5 are arranged on the chain saw main body 1.

[0023] The driving assembly 5 includes a driving rod 51. A working chamber is provided in the chain saw main body 1. A notch 52 is provided on the top of the chain saw main body 1. The notch 52 is connected to the working chamber. The notch 52 is arranged to extend forward and backward. The driving rod 51 extends into the notch 52 and is connected to the slider 42. A guide rod 43 is provided in the guide hole 41. The guide rod 43 is arranged to extend forward and backward. The slider 42 is sleeved on the guide rod 43. A spring is sleeved on the outer wall of the guide rod 43. The spring is arranged between the slider 42 and the front side wall of the guide hole 41.

[0024] The locking assembly 6 includes a locking rod 61, a working chamber is provided in the chainsaw main body 1, a locking hole is provided on the top front side of the slider 42, a through hole is provided on the top front side of the chainsaw main body 1 which passes through the through hole and is connected with the working chamber, the locking rod 61 passes through the through hole and is threadedly connected with the through hole, the upper part of the locking rod 61 extends out of the chainsaw main body 1 and is provided with a knob, and the lower part of the locking rod 61 extends into the working chamber, and when the slider slides to contact the front side wall of the guide hole, the locking hole is located directly below the locking rod, and the bottom end of the locking rod can extend into the locking hole.

[0025] The chain plate assembly 2 includes a slider connecting plate 21, a rear chain plate 22, a front chain plate 23 and a fine-tuning mechanism 7. The left side of the slider connecting plate 21 is fixedly connected to the right end face of the slider 42. The rear chain plate 22 is fixedly connected to the rear end of the right side of the slider connecting plate 21. The main driving wheel is located at the rear side of the rear chain plate 22. The front chain plate 23 is located at the front side of the rear chain plate 22. The fine-tuning mechanism 7 includes a guide block 71 and a fine-tuning drive device 8. The guide block 71 is fixedly connected to the right side of the slider connecting plate 21. The front chain plate 23 is provided with a guide block slide hole 24 at a position corresponding to the guide block 71. The guide block slide hole 24 is arranged in a front-to-back direction. The guide block 71 extends into the guide block slide hole 24 and can slide along the guide block slide hole 24.

[0026] The fine-tuning drive device 8 includes a fine-tuning rotating rod 81 and a screw rod 82 arranged on the rear chain plate 22. The fine-tuning rotating rod 81 is rotatably connected to the rear chain plate 22, and the screw rod 82 is rotatably connected to the cover body 3. The fine-tuning rotating rod 81 is set to move left and right, and the right side of the fine-tuning rotating rod 81 passes through the cover body 3. The right end of the fine-tuning rotating rod 81 is fixedly connected with a fine-tuning knob 811, and the middle part of the fine-tuning rotating rod 81 is fixedly connected with a first bevel gear 83. The screw rod 82 is set to move forward and backward, and a second bevel gear 84 meshing with the first bevel gear 83 is arranged on the screw rod 82. A pushing block 85 is fixedly connected to the right side of the front chain plate 23, and the pushing block 85 is threadedly connected to the screw rod 82.

[0027] The fine-tuning mechanism 7 also includes a front chain plate locking module 9, which includes a locking screw and a front chain plate pressure block 91. The locking screw is fixedly connected to the left side of the front chain plate pressure block 91. The left side of the locking screw passes through the guide block slide hole 24 and is threadedly connected to the slider connecting plate 21. The locking screw is located between the guide block 71 and the front side wall of the guide block slide hole 24. The right side of the locking screw passes through the cover body 3, and the right end of the locking screw is fixedly connected with a locking knob 92.

[0028] In the present scheme, when the chainsaw chain needs to be replaced, the knob is rotated to drive the locking rod to rotate, and the locking rod is threadedly connected to the through hole so that the locking rod moves upward in the through hole, and the bottom end of the locking rod gradually extends out of the locking hole. At this time, the slider is unlocked, and the driving rod is pulled backward to drive the slider to move backward along the guide hole. During the movement of the slider, the slider no longer contacts the front side wall of the guide hole. When the slider moves to the rear side of the guide hole, the slider contacts the rear side wall of the guide hole, and the slider drives the chain plate assembly to move backward synchronously, so that the chain saw chain mounted on the chain plate assembly and the main drive wheel enters a relaxed state. At this time, to replace the chain saw chain, you only need to remove the chain saw chain from the chain plate assembly, and then install the chain saw chain to be replaced.

[0029] After installing the chain saw chain to be replaced, push the driving rod forward so that the driving rod drives the slider to move forward along the guide hole until the slider slides and contacts the front side wall of the guide hole. At this time, the locking hole is located directly below the locking rod. Rotate the knob so that the knob drives the locking rod to rotate. The locking rod is threadedly connected to the through hole so that the locking rod moves downward in the through hole. The bottom end of the locking rod gradually extends into the locking hole, and the slider is locked. During the sliding process of the slider, the chain saw chain assembly is supported by the chain plate assembly and the main drive wheel.

[0030] The chain saw chain will become loose due to wear when used for a long time. At this time, the locking knob is rotated to make the locking knob drive the locking screw and the front chain plate pressure block away from the slider connecting plate, so that the slider connecting plate and the front chain plate are no longer in contact, and the slider connecting plate and the front chain plate are unlocked. The fine-tuning knob is rotated to make the fine-tuning knob drive the fine-tuning rotating rod and the first bevel gear to rotate, and the first bevel gear drives the second bevel gear to synchronize the rotating shaft to drive the screw rod to rotate. After the screw rod rotates, it drives the front chain plate to move forward through the pushing block, the guide block and the guide block sliding hole, thereby extending the distance between the front chain plate and the rear chain plate, so that the slackened chain is tensioned, and the locking knob is rotated again to make the locking knob drive the locking screw and the front chain plate pressure block close to the slider connecting plate until the front chain plate pressure block squeezes the front chain plate so that the front chain plate squeezes the slider connecting plate. At this time, the front chain plate and the slider connecting plate are locked.

Claims

1. A chain saw with a quick-release function, comprising a chain saw main body (1) and a chain plate assembly (2), characterized in that: The chain plate assembly (2) is located on the right side of the chain saw main body (1). A cover body (3) for covering the rear end of the chain plate assembly (2) is arranged on the right side of the chain saw main body (1). The chain saw main body (1) is connected to the chain plate assembly (2) via a quick release assembly (4). A main drive wheel (11) is arranged on the right end face of the chain saw main body (1). A chain saw chain (12) is connected between the chain plate assembly (2) and the main drive wheel (11). The quick release assembly (4) includes a cover body (3) arranged on the right side of the chain saw main body (1). A guide hole (41) is provided, the guide hole (41) is arranged in a front-to-back direction, a slider (42) is provided in the guide hole (41) and can slide along the guide hole (41), the right end of the slider (42) extends out of the guide hole (41) and is connected to the chain plate assembly (2), the chain saw main body (1) is provided with a locking assembly (6) and a driving assembly (5), the locking assembly (6) is used to lock / unlock the slider (42), and the driving assembly (5) is used to drive the slider (42) to move.

2. The chain saw with quick release function according to claim 1, characterized in that: The driving assembly (5) comprises a driving rod (51), a working chamber is arranged in the chain saw main body (1), a notch (52) is arranged on the top of the chain saw main body (1), the notch (52) is communicated with the working chamber, the notch (52) is arranged in a front-to-back direction, and the driving rod (51) extends into the notch (52) and is connected to the slider (42).

3. The chain saw with quick release function according to claim 2, characterized in that: A guide rod (43) is arranged in the guide hole (41), and the guide rod (43) is arranged to extend forward and backward. The slider (42) is sleeved on the guide rod (43), and a spring is sleeved on the outer wall of the guide rod (43). The spring is arranged between the slider (42) and the front side wall of the guide hole (41).

4. The chain saw with quick release function according to claim 1, characterized in that: The locking assembly (6) comprises a locking rod (61), a working chamber is provided in the chain saw main body (1), a locking hole is provided on the top front side of the slider (42), a through hole is provided on the top front side of the chain saw main body (1) extending upward and downward, the through hole is connected to the working chamber, the locking rod (61) passes through the through hole and is threadedly connected to the through hole, the upper part of the locking rod (61) extends out of the chain saw main body (1) and is provided with a knob, the lower part of the locking rod (61) extends into the working chamber, when the slider slides to contact the front side wall of the guide hole, the locking hole is located directly below the locking rod, and the bottom end of the locking rod can extend into the locking hole.

5. The chain saw with quick release function according to claim 1, 2, 3 or 4, characterized in that: The chain plate assembly (2) comprises a slider connecting plate (21), a rear chain plate (22), a front chain plate (23) and a fine adjustment mechanism (7); the left side of the slider connecting plate (21) is fixedly connected to the right end surface of the slider (42); the rear chain plate (22) is fixedly connected to the right rear end of the slider connecting plate (21); the main driving wheel is located at the rear side of the rear chain plate (22); the front chain plate (23) is located at the front side of the rear chain plate (22); and the fine adjustment mechanism (7) is used to drive the front chain plate to move forward and backward along the slider connecting plate (21).

6. The chain saw with quick release function according to claim 5, characterized in that: The fine-tuning mechanism (7) comprises a guide block (71) and a fine-tuning drive device (8); the guide block (71) is fixedly connected to the right side of the slider connecting plate (21); a guide block sliding hole (24) is provided on the front chain plate (23) at a position corresponding to the guide block (71); the guide block sliding hole (24) is arranged to extend forward and backward; the guide block (71) extends into the guide block sliding hole (24) and can slide along the guide block sliding hole (24); and the fine-tuning drive device (8) is used to drive the front chain plate (23) to move forward and backward.

7. The chain saw with quick release function according to claim 6, characterized in that: The fine-tuning driving device (8) comprises a fine-tuning rotating rod (81) and a screw rod (82) arranged on the rear chain plate (22); the fine-tuning rotating rod (81) is rotatably connected to the rear chain plate (22); the screw rod (82) is rotatably connected to the cover body (3); the fine-tuning rotating rod (81) is arranged to run left and right; the right side of the fine-tuning rotating rod (81) passes through the cover body (3); the right end of the fine-tuning rotating rod (81) is fixedly connected to a fine-tuning knob (811); the middle part of the fine-tuning rotating rod (81) is fixedly connected to a first bevel gear (83); the screw rod (82) is arranged to run forward and backward; a second bevel gear (84) meshing with the first bevel gear (83) is arranged on the screw rod (82); a pushing block (85) is fixedly connected to the right side of the front chain plate (23); and the pushing block (85) is threadedly connected to the screw rod (82).

8. The chain saw with quick release function according to claim 6, characterized in that: The fine-tuning mechanism (7) also includes a front chain plate locking module (9), the front chain plate locking module (9) includes a locking screw and a front chain plate pressure block (91), the locking screw is fixedly connected to the left side of the front chain plate pressure block (91), the left side of the locking screw passes through the guide block sliding hole (24) and is threadedly connected to the slider connecting plate (21), the locking screw is located between the guide block (71) and the front side wall of the guide block sliding hole (24), the right side of the locking screw passes through the cover body (3), and the right end of the locking screw is fixedly connected to a locking knob (92).

Images