A chain saw chain

Abstract

The present invention discloses a chain saw chain, comprising a plurality of sequentially connected link units, wherein the blade assembly and transmission assembly in two adjacent link units are connected via a connecting assembly; the connecting assembly comprises a connecting plate, a load-bearing assembly, a locking bolt, and a locknut; the connecting plate is provided with two sets of waist-shaped holes that cooperate with the pivot shaft, and a connecting hole is provided between the two sets of waist-shaped holes; the load-bearing assembly comprises two load-bearing plates, each provided with a pivot hole that cooperates with the pivot shaft, and a first positioning hole and a second positioning hole are provided between the two sets of pivot holes. The present invention eliminates the use of a traditional tension adjustment mechanism and changes the connection spacing between each link unit to an adjustable design with two usable sizes. The chain tension can be adjusted by adjusting the connection spacing of a small number of link units.

Description

Technical Field

[0001] The present invention relates to the technical field of electric chain saws, in particular to a chain of a chain saw. Background Art

[0002] Electric chainsaws are commonly used tools in garden pruning. As one of the core components of a chainsaw, the chain tension must be adjusted during assembly to meet usage requirements. Currently, there are two main methods for adjusting chain tension: one is to use an automatic adjustment mechanism, and the other is to use auxiliary tools for manual adjustment. Both methods require the chainsaw to be equipped with corresponding tensioning components. However, the current research and development of automated equipment is more focused on controlling processing costs, achieving the same or even better functionality with less component cost investment, and better meeting the development requirements of technological improvements. Summary of the Invention

[0003] In response to the above problems, the present invention provides a chain for a chain saw, which eliminates the use of a traditional tension adjustment mechanism and changes the connection spacing between each chain link unit into an adjustable design. The chain tension can be adjusted by adjusting the connection spacing of a few chain link units. At the same time, when a few blade assemblies are damaged, they can be directly removed, and by adjusting the connection spacing between other chain link units, the chain can meet the usage length requirements and can continue to be used without replacing the blade assemblies.

[0004] The technical solutions of the present invention are as follows:

[0005] A chain saw chain comprises a plurality of sequentially connected link units, each of the link units comprising a blade assembly and a transmission assembly connected to each other, and the blade assemblies and transmission assemblies in two adjacent link units are connected via a connecting assembly;

[0006] The connecting assembly includes:

[0007] The connecting plates are divided into two groups and are respectively arranged on both sides of the chain link unit. The connecting plates are provided with two groups of waist-shaped holes for respectively cooperating with the pivot shafts on the blade assembly and the transmission assembly. The length directions of the two groups of waist-shaped holes are parallel to each other. A connecting hole is provided on the connecting plate between the two groups of waist-shaped holes.

[0008] The load-bearing assembly comprises two groups, each of which cooperates with the two groups of connecting plates. Each group of the load-bearing assembly comprises two load-bearing plates, and the ends of the two load-bearing plates facing each other are in a step-shaped manner that cooperate with each other. The two load-bearing plates are respectively provided with pivot holes for cooperating with the pivot shafts on the blade assembly and the transmission assembly. The two load-bearing plates are respectively provided with a first positioning hole and a second positioning hole corresponding to the position of the connecting hole between the two groups of pivot holes (the first positioning hole and the second positioning hole are distributed laterally).

[0009] The locking bolt is used to pass through the connecting hole and the first positioning hole / the second positioning hole in sequence to lock the two sets of connecting plates and the load-bearing component;

[0010] Lock nut, used to lock with the locking bolt.

[0011] The working principle of the above technical solution is as follows:

[0012] When the tension of the chain needs to be adjusted, or some of the link units in the chain are damaged and the chain needs to be readjusted, the connecting components between some of the link units can be adjusted. Specifically, there are mainly two sizes of connection spacing. One is when the two groups of first positioning holes are positioned and connected, which is the maximum connection spacing. The other is when the two groups of second positioning holes are positioned and connected, which is the minimum connection spacing. In addition, when the first positioning holes and the second positioning holes on the two groups of load-bearing plates are aligned and connected, it also belongs to a size of connection spacing. However, in this case, since the positions of the two groups of load-bearing plates relative to the locking bolts are not symmetrical, this connection spacing is generally not used.

[0013] The present invention eliminates the use of traditional tension adjustment mechanisms and changes the connection spacing between each chain link unit into an adjustable design with two usable sizes (the overall adjustable spacing is preferably controlled at 1-2 cm). The chain tension can be adjusted by adjusting the connection spacing of a few chain link units. At the same time, when a few blade assemblies are damaged, they can be directly removed, and by adjusting the connection spacing between other chain link units, the chain can meet the usage length requirements and can continue to be used without replacing the blade assemblies.

[0014] In a further technical solution, a T-shaped groove is provided on the inner side surface of the connecting plate, which slides with the load-bearing plate. Through the setting of the groove, the load-bearing plate and the connecting plate can be defined as one, which is convenient for the cooperation and installation with the pivot shaft on the blade assembly and the transmission assembly, and also facilitates the sliding adjustment and positioning of the load-bearing plate relative to the connecting plate. The two ends of the groove are open, which is convenient for disassembly or installation of the load-bearing plate.

[0015] In a further technical solution, when the first positioning holes and the connecting holes on the two load-bearing plates are positioned by locking bolts, the pivot shafts on the blade assembly and the transmission assembly are respectively located at one end of the two groups of waist-shaped holes away from each other; when the second positioning holes and the connecting holes on the two load-bearing plates are positioned by locking bolts, the pivot shafts on the blade assembly and the transmission assembly are respectively located at one end of the two groups of waist-shaped holes close to each other.

[0016] Such a design can more conveniently complete the adjustment connection of the two spacings between two adjacent groups of chain link units.

[0017] In a further technical solution, the blade assembly and the pivot shaft on the transmission assembly in the same link unit are reinforced and connected via a connecting plate, and the waist-shaped hole is replaced by a pivot hole on the connecting plate.

[0018] In a further technical solution, the outer surfaces of the two groups of connecting plates are respectively provided with accommodating grooves for accommodating the heads of the locking bolts and the anti-loosening nuts at the connecting holes, so that the heads of the locking bolts and the anti-loosening nuts can be hidden, thereby avoiding the protruding heads of the locking bolts and the anti-loosening nuts causing obstructions during the cutting process, or avoiding the problem of unstable connection between the chain link units caused by impact.

[0019] The beneficial effects of the present invention are:

[0020] 1. This invention eliminates the use of traditional tension adjustment mechanisms and changes the connection spacing between each chain link unit to an adjustable design with two usable sizes. The chain tension can be adjusted by adjusting the connection spacing of a small number of chain link units.

[0021] 2. When a few blade assemblies are damaged, they can be directly disassembled and the connection spacing between other chain link units can be adjusted to make the chain meet the usage length requirements. The chain can continue to be used without replacing the blade assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a schematic structural diagram of a chain link unit according to an embodiment of the present invention when it is at a certain connection distance;

[0023] Figure 2 is a schematic structural diagram of the link unit according to an embodiment of the present invention when it is at another connection spacing;

[0024] Figure 3 is a schematic structural diagram of a blade assembly according to an embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of a transmission assembly according to an embodiment of the present invention;

[0026] Figure 5is a front view of the connecting assembly according to an embodiment of the present invention;

[0027] Figure 6 1 is a schematic structural diagram of the connecting plate according to an embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the structure of the bearing plate according to an embodiment of the present invention;

[0029] Figure 8 1 is a diagram showing the coordinated state of two sets of bearing plates when the link unit according to an embodiment of the present invention is at a certain connection spacing;

[0030] Figure 9 This is a diagram of the matching state of two sets of bearing plates when the link unit described in an embodiment of the present invention is at another connection spacing.

[0031] Description of reference numerals:

[0032] 10. Blade assembly; 11. Pivot shaft; 20. Transmission assembly; 30. Connecting assembly; 31. Slide groove; 32. Waist-shaped hole; 33. Connecting hole; 34. Load-bearing plate; 35. Pivot hole; 36. First positioning hole; 37. Second positioning hole; 38. Connecting plate; 39. Locking bolt. DETAILED DESCRIPTION

[0033] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0034] Example:

[0035] A chain saw chain, such as Figure 1-Figure 4 As shown, it includes a plurality of chain link units connected in sequence, each of the chain link units includes a blade assembly 10 and a transmission assembly 20 connected to each other, and the blade assembly 10 and the transmission assembly 20 in two adjacent chain link units are connected by a connecting assembly 30;

[0036] The connecting assembly 30 includes:

[0037] The connecting plates 38 are divided into two groups and are respectively arranged on both sides of the chain link unit. Figure 5 As shown, the connecting plate 38 is provided with two groups of waist-shaped holes 32 for respectively cooperating with the pivot shaft 11 on the blade assembly 10 and the transmission assembly 20. The length directions of the two groups of waist-shaped holes 32 are parallel to each other. The connecting plate 38 is provided with a connecting hole 33 between the two groups of waist-shaped holes 32.

[0038] Load-bearing components, such as Figure 7As shown, the load-bearing components are divided into two groups, respectively cooperating with the two groups of connecting plates 38. Each group of the load-bearing components includes two load-bearing plates 34. The ends of the two load-bearing plates 34 facing each other are in a step-shaped manner that cooperate with each other. The two load-bearing plates 34 are respectively provided with a pivot hole 35 for cooperating with the pivot shaft 11 on the blade assembly 10 and the transmission assembly 20. The two load-bearing plates 34 are respectively provided with a first positioning hole 36 and a second positioning hole 37 corresponding to the position of the connecting hole 33 between the two groups of pivot holes 35 (the first positioning hole 36 and the second positioning hole 37 are distributed laterally).

[0039] The locking bolt 39 is used to pass through the connecting hole 33 and the first positioning hole 36 / the second positioning hole 37 in sequence to lock the two sets of connecting plates 38 and the load-bearing component;

[0040] The anti-loosening nut is used to cooperate with the locking bolt 39 for locking. The anti-loosening nut can prevent the locking bolt 39 from loosening due to severe vibration during the use of the chain, which brings safety hazards in use.

[0041] In addition, in order to avoid the protruding head of the locking bolt 39 and the anti-loosening nut causing obstruction during the cutting process, or the problem of unstable connection between the chain link units due to impact, accommodating grooves can be respectively provided on the outer surfaces of the two sets of the connecting plates 38 at the connecting holes 33 to accommodate the head of the locking bolt 39 and the anti-loosening nut, so that the head of the locking bolt 39 and the anti-loosening nut are hidden.

[0042] When the tension of the chain needs to be adjusted, or when some of the chain link units are damaged and need to be readjusted, the connection components 30 between some of the chain link units can be adjusted. Specifically, there are mainly two sizes of connection spacing. One is when the two groups of first positioning holes 36 are positioned and connected, such as Figure 2 As shown, this is the maximum connection distance. Another example is when two sets of second positioning holes 37 are positioned and connected, as shown in FIG. Figure 1 As shown, this is the minimum connection spacing. In addition, when the first positioning holes 36 and the second positioning holes 37 on the two groups of bearing plates 34 are aligned and connected, it also belongs to a connection spacing of a certain size. However, in this case, since the positions of the two groups of bearing plates 34 relative to the locking bolts 39 are not symmetrical, this connection spacing is generally not used.

[0043] After the connection is completed, the two sets of bearing plates 34 serve as bearing components to bear the lateral tension between the chain link units.

[0044] The present invention eliminates the use of traditional tension adjustment mechanisms and changes the connection spacing between each chain link unit into an adjustable design with two usable sizes (the overall adjustable spacing is preferably controlled at 1-2 cm). The chain tension can be adjusted by adjusting the connection spacing of a few chain link units. At the same time, when a few blade assemblies 10 are damaged, they can be directly removed, and by adjusting the connection spacing between other chain link units, the chain can meet the usage length requirements and can continue to be used without replacing the blade assembly 10.

[0045] In another embodiment, Figure 6 As shown, a T-shaped groove 31 is provided on the inner side surface of the connecting plate 38, which is slidably matched with the load-bearing plate 34. Through the setting of the groove 31, the load-bearing plate 34 and the connecting plate 38 can be defined as one body, which is convenient for the matching installation with the pivot shaft 11 on the blade assembly 10 and the transmission assembly 20, and also convenient for the sliding adjustment and positioning of the load-bearing plate 34 relative to the connecting plate 38. The two ends of the groove 31 are open, which is convenient for disassembly or installation of the load-bearing plate 34.

[0046] In another embodiment, Figure 2 and Figure 8 As shown, when the first positioning holes 36 and the connecting holes 33 on the two bearing plates 34 are positioned by the locking bolts 39, the pivot shafts 11 on the blade assembly 10 and the transmission assembly 20 are respectively located at the ends of the two groups of waist-shaped holes 32 that are away from each other; Figure 1 and Figure 9 As shown, when the second positioning holes 37 and the connecting holes 33 on the two bearing plates 34 are positioned by the locking bolts 39, the pivot shafts 11 on the blade assembly 10 and the transmission assembly 20 are respectively located at the ends of the two sets of waist-shaped holes 32 that are close to each other. This design can more conveniently achieve the two spacing adjustment connections between two adjacent sets of chain link units.

[0047] In another embodiment, Figure 1 As shown, the blade assembly 10 and the pivot shaft 11 on the transmission assembly 20 in the same link unit are reinforced and connected via a connecting plate 38 , and the waist-shaped hole is replaced by a pivot hole on the connecting plate 38 .

[0048] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A chain saw chain comprising a plurality of sequentially connected link units, each link unit comprising a blade assembly and a transmission assembly connected to each other, the blade assemblies and transmission assemblies in two adjacent link units being connected by a connecting assembly; It is characterized in that The connecting assembly includes: The connecting plates are divided into two groups and are respectively arranged on both sides of the chain link unit. The connecting plates are provided with two groups of waist-shaped holes for respectively cooperating with the pivot shafts on the blade assembly and the transmission assembly. The length directions of the two groups of waist-shaped holes are parallel to each other. A connecting hole is provided on the connecting plate between the two groups of waist-shaped holes. The load-bearing assembly is divided into two groups, respectively cooperating with the two groups of connecting plates. Each group of the load-bearing assembly includes two load-bearing plates, and the ends of the two load-bearing plates facing each other are in the shape of steps that cooperate with each other. The two load-bearing plates are respectively provided with pivot holes for cooperating with the pivot shafts on the blade assembly and the transmission assembly. The two load-bearing plates are respectively provided with first positioning holes and second positioning holes corresponding to the positions of the connecting holes between the two groups of pivot holes. The locking bolt is used to pass through the connecting hole and the first positioning hole / the second positioning hole in sequence to lock the two sets of connecting plates and the load-bearing component; Lock nut, used to lock with the locking bolt.

2. The chain saw chain according to claim 1, wherein: A T-shaped sliding groove is provided on the inner side surface of the connecting plate and is slidably matched with the load-bearing plate, and both ends of the sliding groove are open.

3. The chain saw chain according to claim 1, wherein: When the first positioning holes and the connecting holes on the two bearing plates are positioned by the locking bolts, the pivot shafts on the blade assembly and the transmission assembly are respectively located at the ends of the two groups of waist-shaped holes away from each other; when the second positioning holes and the connecting holes on the two bearing plates are positioned by the locking bolts, the pivot shafts on the blade assembly and the transmission assembly are respectively located at the ends of the two groups of waist-shaped holes close to each other.

4. The chain saw chain according to claim 1, wherein: The outer sides of the two groups of connecting plates are respectively provided with accommodating grooves for accommodating the heads of the locking bolts and the anti-loosening nuts at the connecting holes.

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