Adjusting structure of guide plate chain

Abstract

The utility model provides a guide plate chain adjusting structure which comprises a shell, a guide plate, a guide plate cover and a chain arranged outside the guide plate, the guide plate is arranged on the shell in a sliding mode, the guide plate cover is provided with an adjusting knob which can rotate to adjust the sliding of the guide plate so as to adjust the tightness of the chain, the guide plate is provided with an adjusting sliding block, and the adjusting sliding block is arranged on the shell. And a transmission structure capable of adjusting the sliding of the adjusting sliding block to drive the guide plate to slide is arranged between the adjusting knob and the adjusting sliding block. The device is convenient and rapid to submit, can be adjusted by manually turning a knob, does not need to be disassembled, and saves time.

Description

Technical Field

[0001] This utility model relates to the field of chainsaw technology, and in particular to an adjustment structure for a guide chain. Background Technology

[0002] A typical chainsaw consists of a housing, a guide plate cover, a guide plate, and a chain. The housing houses a drive mechanism. The rear end of the guide plate is slidably mounted on the housing. The rear end of the chain is poweredly connected to the drive mechanism, and the front end of the chain is wrapped around the front end of the guide plate. In other words, when the drive mechanism is activated, it rotates the chain, thereby sawing trees and other materials.

[0003] However, after a period of use, the chain will inevitably deform and lengthen. At this point, the chain tension needs to be manually adjusted. The common adjustment method is to loosen the fixing screws of the guide plate and manually push the guide plate forward. Obviously, this adjustment method is extremely inconvenient and requires frequent adjustments. Utility Model Content

[0004] To address the problems of the prior art, this utility model provides an adjustment structure for a guide chain, which allows for easy adjustment of the chain tension by directly turning an external knob.

[0005] The technical solution adopted is as follows:

[0006] An adjustment structure for a guide plate chain includes a housing, a guide plate, a guide plate cover, and a chain disposed outside the guide plate. The guide plate is slidably disposed on the housing. The guide plate cover is provided with an adjustment knob that allows the guide plate to slide and adjust the chain tension. The guide plate is provided with an adjustment slider. A transmission structure is provided between the adjustment knob and the adjustment slider to adjust the sliding of the adjustment slider and drive the guide plate to slide.

[0007] Furthermore, the transmission structure includes a first gear mounted on the adjustment knob, an adjustment rod capable of driving the adjustment slider to slide, and a transmission rod between the adjustment rod and the first gear.

[0008] Furthermore, one end of the transmission rod is provided with a second gear that engages with the first gear for transmission, and the other end is provided with a worm gear; one end of the adjustment rod is provided with a screw that engages with the adjustment slider, and the other end is provided with a worm gear that engages with the worm gear.

[0009] Furthermore, the housing is provided with a protrusion that engages with the guide plate, and the guide plate is provided with a sliding groove at the protrusion for sliding, the sliding groove engaging with the protrusion.

[0010] Furthermore, the adjusting rod is rotatably mounted on the guide plate cover and / or the housing.

[0011] Furthermore, the adjusting rod is rotatably mounted on the housing, and the guide plate is provided with a passage groove for the transmission rod to pass through without affecting the sliding of the guide plate.

[0012] Furthermore, the adjustment knob is located on the knob cover, and the knob cover is located on the guide plate cover.

[0013] Furthermore, the housing is provided with a drive structure for driving the chain to rotate on one side of the guide plate, and the chain is located outside the drive structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model provides an adjustment structure for a guide plate chain, including a housing, a guide plate, and a guide plate cover. The guide plate is slidable on the housing, and the chain is located outside the guide plate and drive structure. The tension of the chain is adjusted by driving the guide plate to slide. An adjustment knob is provided on the guide plate cover, and an adjustment slider is provided on the guide plate. A transmission structure is provided between the adjustment knob and the adjustment slider to adjust the movement of the adjustment slider. The transmission structure includes gear transmission and worm gear transmission, which are converted into screw rotation, thereby driving the adjustment slider to slide, i.e., the guide plate slides. The chain tension can be adjusted directly by manually rotating the knob, which is convenient to operate, requires no tools, and does not require disassembling the guide plate cover to adjust the guide plate, allowing for quick and accurate adjustment of the guide plate tension. Attached Figure Description

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

[0017] Figure 2 , 3 This is a disassembly diagram of the present invention;

[0018] Figure 4 , 7 These are schematic diagrams of the structure of this utility model from different angles;

[0019] Figure 5 for Figure 2 Enlarged view of point a in the middle;

[0020] Figure 6 for Figure 3 Enlarged view of point b in the middle;

[0021] The components include: housing 1, guide plate 2, slide groove 201, chain 3, adjusting knob 4, adjusting slider 5, transmission structure 6, first gear 601, adjusting rod 602, screw 6021, worm gear 6022, transmission rod 603, second gear 6031, worm wheel 6032, guide plate cover 7, drive structure 8, protrusion 9, and knob cover 10. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments.

[0023] refer to Figure 1-7 An adjustment structure for a guide plate chain includes a housing 1, a guide plate 2 slidably disposed on the housing 1, a guide plate cover 7, and a chain 3 disposed outside the guide plate 2. The guide plate cover 7 is provided with an adjustment knob 4 that can rotate to adjust the sliding of the guide plate to adjust the tension of the chain 3. The guide plate 2 is provided with an adjustment slider 5. A transmission structure 6 is provided between the adjustment knob 4 and the adjustment slider to adjust the sliding of the adjustment slider 5 to drive the guide plate 2 to slide.

[0024] The transmission structure 6 includes a first gear 601 mounted on the adjustment knob 4, an adjustment rod 602 that can drive the adjustment slider 5 to slide, and a transmission rod 603 between the adjustment rod and the first gear.

[0025] The transmission rod 603 has a second gear 6031 at one end that cooperates with the first gear 601 for transmission, and a worm gear 6032 at the other end; the adjusting rod 602 has a screw 6021 at one end that cooperates with the adjusting slider 5, and a worm 6022 at the other end that cooperates with the worm gear 6032.

[0026] Rotating the adjustment knob 4 drives the first gear 601 to rotate. The first gear 601 engages with the second gear 6031, causing the second gear 6031 to rotate, which in turn drives the transmission rod 603 to rotate. The rotation of the transmission rod 603 causes the worm gear 6032 at one end to rotate as well. Since the worm gear 6032 engages with the worm 6022, it drives the adjustment rod 602 to rotate, which in turn drives the screw 6021 to rotate. The rotation of the screw 6021 causes the adjustment slider 5 to slide. Since the adjustment slider 5 is mounted on the guide plate 2, it causes the guide plate 2 to slide onto the housing 1.

[0027] The housing 1 is further provided with a drive structure 8 on one side of the guide plate 2, which drives the chain to rotate. The chain is located on the outer periphery of the drive structure 8 and the guide plate 2. The rotation of the drive structure 8 drives the chain to rotate. The sliding of the drive guide plate 2 changes the distance between the guide plate 2 and the drive structure 8, thereby controlling the tension of the chain.

[0028] The chain tension can be adjusted manually by turning the adjustment knob directly. It is easy to operate and can be adjusted at any time. The angle of the knob can be adjusted as needed. The adjustment is quick and accurate, and there is no need to remove the guide plate cover for adjustment.

[0029] The housing 1 is provided with a protrusion 9 that mates with the guide plate. The guide plate 2 is provided with a sliding groove 201 at the protrusion 9 for sliding. The sliding groove 201 mates with the protrusion 9. The sliding groove 201 facilitates the sliding of the guide plate 2 and also facilitates the installation of the guide plate cover 7 on the housing 1. The connection structure between the guide plate cover 7 and the housing 1 can be achieved through the sliding groove 201.

[0030] The adjusting rod 602 is rotatably mounted on the guide plate cover 7 and / or the housing 1. It must be ensured that the adjusting rod 601 only rotates and does not slip; the rotation is to drive the adjusting slider to slide. If the adjusting rod 602 is rotatably mounted on the housing 1, then the guide plate 2 needs to have a passage groove for the transmission rod 603 to pass through without affecting the sliding of the guide plate 2.

[0031] In this embodiment, the adjusting rod 601 is rotatably mounted on the guide plate cover 7. The transmission rod 603 can also be rotatably mounted on the guide plate cover 7.

[0032] The adjusting knob 4 is mounted on the knob cover 10, which is mounted on the guide plate cover 7. The knob cover 10 is provided to accommodate the first and second gears. The first and second gears are located on one side of the guide plate cover 7, and the worm gear and adjusting rod are located on the other side of the guide plate cover 7.

[0033] The guide plate cover 7 is connected to the housing 1.

[0034] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An adjustment structure for a guide plate chain, comprising a housing (1), a guide plate (2), a guide plate cover (7), and a chain (3) disposed outside the guide plate (2), characterized in that: The guide plate is slidably mounted on the housing (1). The guide plate cover (7) is provided with an adjustment knob (4) that can rotate to adjust the guide plate sliding to adjust the tightness of the chain (3). The guide plate (2) is provided with an adjustment slider (5). Between the adjustment knob (4) and the adjustment slider, there is a transmission structure (6) that allows the adjustment slider (5) to slide to drive the guide plate (2) to slide.

2. The adjustment structure of the guide chain as described in claim 1, characterized in that: The transmission structure (6) includes a first gear (601) on the adjustment knob (4), an adjustment rod (602) that can drive the adjustment slider (5) to slide, and a transmission rod (603) between the adjustment rod and the first gear.

3. The adjustment structure of the guide chain as described in claim 2, characterized in that: The transmission rod (603) has a second gear (6031) at one end that cooperates with the first gear (601) for transmission, and a worm gear (6032) at the other end; the adjustment rod (602) has a screw (6021) at one end that cooperates with the adjustment slider (5), and a worm gear (6022) at the other end that cooperates with the worm gear (6032).

4. The adjustment structure of the guide chain as described in claim 1, characterized in that: The housing is provided with a protrusion (9) that is connected to the guide plate. The guide plate (2) is provided with a sliding groove (201) at the protrusion (9) for sliding. The sliding groove is connected to the protrusion.

5. The adjustment structure of the guide chain as described in claim 2, characterized in that: The adjusting rod (602) is rotatably mounted on the guide plate cover (7) and / or the housing (1).

6. The adjustment structure of the guide chain as described in claim 5, characterized in that: The adjusting rod (602) is rotatably mounted on the housing (1), and the guide plate (2) is provided with a passage groove for the transmission rod (603) to pass through without affecting the sliding of the guide plate.

7. The adjustment structure of the guide chain as described in claim 1, characterized in that: The adjustment knob (4) is located on the knob cover (10), and the knob cover (10) is located on the guide plate cover (7).

8. The adjustment structure of the guide chain as described in claim 1, characterized in that: The housing (1) is provided with a drive structure (8) for driving the chain to rotate on one side of the guide plate (2), and the chain is located outside the drive structure (8).

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