Chain saw shock absorber with better working reliability

Abstract

The utility model relates to the technical field of engines, and discloses a chain saw shock absorber with better working reliability, which comprises a shock absorber body, the shock absorber body comprises an upper mounting block and a lower mounting block, a dust cover is sleeved on the shock absorber body, and a mounting mechanism is arranged between the shock absorber body and the dust cover; the mounting mechanism comprises a first threaded ring fixedly arranged at the top of the dust cover and a second threaded ring fixedly arranged at the bottom of the dust cover, and the upper mounting block is sleeved with a first threaded sleeve. The shock absorber body can be wrapped in a closed mode through the installed dust cover, so that dust or silt can be effectively prevented from being deposited on a piston rod and an oil seal of the shock absorber body, the service life of the chain saw shock absorber is effectively prolonged, and the dust cover is a corrugated cover body and is made of an elastic material, so that the service life of the chain saw shock absorber is prolonged. When the piston rod drives the piston block to slide in the oil bin, the elastic dust cover is compressed or stretched accordingly, and therefore the working state of the shock absorber body is not affected.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to a chainsaw shock absorber with improved operational reliability. Background Technology

[0002] The chainsaw is powered by a small gasoline engine, but as a handheld tool, the high-frequency vibrations generated by the gasoline engine can be difficult for the operator's hands to withstand. Therefore, all chainsaws are designed with a shock absorption system between the gasoline engine and the operating handle. These shock absorbers come in two types: spring-type and rubber-type. Generally, rubber-type shock absorbers have a limited shock absorption effect and are suitable for small to medium-sized chainsaws; spring-type shock absorbers can withstand larger loads and are suitable for large-displacement professional-grade chainsaws.

[0003] A Chinese patent, CN222046472U, discloses a chainsaw shock absorber with improved operational reliability. It includes an upper shock absorber base, a lower shock absorber base, a shock absorber spring, and a pull cable. The upper end of the shock absorber spring is connected to the upper shock absorber base, and the lower end is connected to the lower shock absorber base. The pull cable has an upper limit block at its upper end and a lower limit block at its lower end. The upper shock absorber base has an upper limit groove, and the lower shock absorber base has a lower limit groove. The upper end of the pull cable is positioned within the upper shock absorber base, and the upper limit block is limited within the upper limit groove. The lower end of the pull cable is positioned within the lower shock absorber base, and the lower limit block is limited within the lower limit groove. The upper limit groove contains a first buffer layer for cushioning the upper limit block, and the lower limit groove contains a second buffer layer for the annular lower limit block. This chainsaw shock absorber effectively mitigates damage to the pull cable from sudden impacts and effectively prevents the pull cable from breaking.

[0004] However, the surface of the shock absorber is not equipped with a dustproof structure, which makes it easy for dust or mud to accumulate on the oil seal and piston rod of the shock absorber, thereby causing scratches on the piston rod and oil seal, and even leading to oil leakage, affecting the service life of the shock absorber. Therefore, there is a need to provide a chainsaw shock absorber with better working reliability. Utility Model Content

[0005] The purpose of this invention is to provide a chainsaw shock absorber with better working reliability to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a chainsaw shock absorber with improved operational reliability, comprising a shock absorber body, the shock absorber body including an upper mounting block and a lower mounting block, a dust cover fitted onto the shock absorber body, and an installation mechanism provided between the shock absorber body and the dust cover; the installation mechanism includes a first threaded ring fixedly disposed on the top of the dust cover and a second threaded ring fixedly disposed on the bottom of the dust cover, a first threaded sleeve fitted onto the upper mounting block, a rotating ring fixedly disposed within the first threaded sleeve, a rotating groove rotatably connected to the rotating ring on the upper mounting block, and the first threaded sleeve threadedly connected to the first threaded ring; an installation sleeve fitted onto the lower mounting block, a second threaded sleeve fitted onto the installation sleeve, the second threaded sleeve threadedly connected to the second threaded ring, and an engaging assembly provided between the installation sleeve and the lower mounting block.

[0007] Preferably, the dust cover is a corrugated cover and is made of an elastic material.

[0008] Preferably, the engaging assembly between the mounting sleeve and the lower mounting block includes a locking hole formed inside the mounting sleeve.

[0009] Preferably, the lower mounting block has telescopic grooves on both sides, and a locking rod that engages with a locking hole is slidably disposed in the telescopic groove. A telescopic spring is fixedly disposed between the locking rod and the telescopic groove.

[0010] Preferably, a lever for moving the lever is fixedly provided on the lever, and a sliding groove is provided on the top of the lower mounting block, and the lever is slidably connected to the sliding groove.

[0011] Preferably, the shock absorber body further includes a damping rod installed between the upper mounting block and the lower mounting block, and a shock-absorbing spring disposed between the upper mounting block and the lower mounting block is sleeved on the damping rod.

[0012] Preferably, connectors are fixedly installed on the top of the upper mounting block and the bottom of the lower mounting block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) This chainsaw shock absorber has better reliability. The dust cover can completely enclose the shock absorber body after installation, which can effectively prevent dust or mud from accumulating on the piston rod and oil seal of the shock absorber body, thus effectively extending the service life of the chainsaw shock absorber. The dust cover is a corrugated cover made of elastic material. When the piston rod drives the piston block to slide in the oil chamber, the elastic dust cover is compressed or stretched accordingly, so as not to affect the working state of the shock absorber body.

[0015] 2) This chainsaw shock absorber has better reliability. By rotating the second threaded sleeve, the connection between the mounting sleeve and the second threaded ring is released. Then, by moving the two levers inward, the locking rod is disengaged from the locking hole and retracted into the telescopic groove. Then, the mounting sleeve and the second threaded sleeve are removed from the lower mounting block. Next, the connection between the first threaded sleeve and the first threaded ring is released by rotating the first threaded sleeve. Finally, the dust cover is pulled out from the shock absorber body, which completes the quick disassembly of the dust cover, making it easy to replace after long-term use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a chainsaw shock absorber with better working reliability in an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the separation structure of the dust cover and the shock absorber body in an embodiment of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the upper mounting block in an embodiment of the present utility model;

[0019] Figure 4 This is a cross-sectional view of the lower mounting block in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the separation structure of the mounting sleeve and the second threaded sleeve in an embodiment of this utility model.

[0021] In the diagram: 1. Shock absorber body; 11. Damping rod; 12. Upper mounting block; 13. Lower mounting block; 14. Shock absorber spring; 15. Connecting component;

[0022] 2. Dust cover;

[0023] 3. Installation mechanism; 31. First threaded ring; 32. Second threaded ring; 33. First threaded sleeve; 34. Rotating ring; 35. Rotating groove; 36. Telescopic groove; 37. Locking rod; 38. Telescopic spring; 39. Toggle rod; 310. Sliding groove; 311. Mounting sleeve; 312. Locking hole; 313. Second threaded sleeve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Combination Figures 1-5 A chainsaw shock absorber with improved operational reliability includes a shock absorber body 1, which includes an upper mounting block 12 and a lower mounting block 13. The shock absorber body 1 also includes a damping rod 11 installed between the upper mounting block 12 and the lower mounting block 13. A damping spring 14 is sleeved on the damping rod 11 and is disposed between the upper mounting block 12 and the lower mounting block 13. Connecting parts 15 are fixedly installed on the top of the upper mounting block 12 and the bottom of the lower mounting block 13. A dust cover 2 is sleeved on the shock absorber body 1. The dust cover 2 is a corrugated cover made of elastic material. An installation mechanism 3 is provided between the shock absorber body 1 and the dust cover 2.

[0027] Specifically, the dust cover 2, once installed, can completely enclose the shock absorber body 1, effectively preventing dust or mud from accumulating on the piston rod and oil seal of the shock absorber body 1, thus extending the service life of the chainsaw shock absorber. The dust cover 2 is a corrugated cover made of elastic material. When the piston rod drives the piston block to slide in the oil chamber, the elastic dust cover 2 is compressed or stretched accordingly, so as not to affect the working state of the shock absorber body 1.

[0028] See Figures 2-5 Furthermore, the installation mechanism 3 includes a first threaded ring 31 fixedly disposed on the top of the dust cover 2 and a second threaded ring 32 fixedly disposed on the bottom of the dust cover 2. A first threaded sleeve 33 is fitted onto the upper mounting block 12, and a rotating ring 34 is fixedly disposed inside the first threaded sleeve 33. A rotating groove 35 is formed on the upper mounting block 12 to rotatably connect with the rotating ring 34. The first threaded sleeve 33 is threadedly connected to the first threaded ring 31. An installation sleeve 311 is fitted onto the lower mounting block 13, and a second threaded sleeve 313 is fitted onto the installation sleeve 311. The second threaded sleeve 313 is threadedly connected to the second threaded ring 32. The mounting sleeve 311 and the lower mounting block 13 are connected by a locking assembly. The locking assembly includes a locking hole 312 in the mounting sleeve 311. The lower mounting block 13 has telescopic grooves 36 on both sides. A locking rod 37 that engages with the locking hole 312 is slidably disposed in the telescopic groove 36. A telescopic spring 38 is fixedly disposed between the locking rod 37 and the telescopic groove 36. A lever 39 for moving the locking rod 37 is fixedly disposed on the locking rod 37. A sliding groove 310 is provided on the top of the lower mounting block 13. The lever 39 is slidably connected to the sliding groove 310.

[0029] Specifically, by rotating the second threaded sleeve 313 to disconnect the mounting sleeve 311 from the second threaded ring 32, and then by pushing the two levers 39 inward, the locking lever 37 is disengaged from the locking hole 312 and retracted into the telescopic groove 36. Then, the mounting sleeve 311 and the second threaded sleeve 313 are removed from the lower mounting block 13. Next, by rotating the first threaded sleeve 33 to disconnect it from the first threaded ring 31, and finally, the dust cover 2 is pulled out from the shock absorber body 1. This completes the quick disassembly of the dust cover 2, making it easy to replace the dust cover 2 after long-term use.

[0030] In actual operation, the dust cover 2 is sleeved onto the shock absorber body 1 from the bottom. Then, by rotating the first threaded sleeve 33, the rotating ring 34 rotates along the rotating groove 35, and the first threaded sleeve 33 is threadedly connected to the first threaded ring 31 to fix the top of the dust cover 2. Then, by moving the two levers 39 inward, the two locking rods 37 retract into the telescopic groove 36 and squeeze the telescopic spring 38. Next, the second threaded sleeve 313 is sleeved onto the mounting sleeve 311, and then the mounting sleeve 311 is sleeved onto the lower mounting block 13. During this process, the locking hole 312 is aligned with the locking rod 37. Then, the levers 39 are released, and the two locking rods 37 automatically engage into the locking hole 312 under the rebound of the telescopic spring 38, so that the mounting sleeve 311 is fixed on the lower mounting block 13. Finally, by rotating the second threaded sleeve 313, it is threadedly connected to the second threaded ring 32 to fix the bottom of the dust cover 2, thereby completing the installation of the dust cover 2.

[0031] The dust cover 2, once installed, can completely enclose the shock absorber body 1, thereby effectively preventing dust or mud from accumulating on the piston rod and oil seal of the shock absorber body 1, effectively extending the service life of the chainsaw shock absorber. The dust cover 2 is a corrugated cover made of elastic material. When the piston rod drives the piston block to slide in the oil chamber, the elastic dust cover 2 is compressed or stretched accordingly, so as not to affect the working state of the shock absorber body 1.

[0032] When the dust cover 2 needs to be replaced, firstly, the connection between the mounting sleeve 311 and the second threaded ring 32 is released by rotating the second threaded sleeve 313. Then, by moving the two levers 39 inward, the locking lever 37 is disengaged from the locking hole 312 and retracted into the telescopic groove 36. Then, the mounting sleeve 311 and the second threaded sleeve 313 are removed from the lower mounting block 13. Next, the connection between the first threaded sleeve 33 and the first threaded ring 31 is released by rotating the first threaded sleeve 33. Finally, the dust cover 2 is pulled out from the shock absorber body 1, which completes the quick disassembly of the dust cover 2 body and facilitates the replacement of the dust cover 2.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chainsaw shock absorber with improved operational reliability, comprising a shock absorber body (1), wherein the shock absorber body (1) includes an upper mounting block (12) and a lower mounting block (13), characterized in that: A dust cover (2) is fitted on the shock absorber body (1), and an installation mechanism (3) is provided between the shock absorber body (1) and the dust cover (2). The installation mechanism (3) includes a first threaded ring (31) fixedly disposed on the top of the dust cover (2) and a second threaded ring (32) fixedly disposed on the bottom of the dust cover (2). A first threaded sleeve (33) is fitted on the upper mounting block (12). A rotating ring (34) is fixedly disposed inside the first threaded sleeve (33). A rotating groove (35) is opened on the upper mounting block (12) and rotates in connection with the rotating ring (34). The first threaded sleeve (33) is threadedly connected to the first threaded ring (31). The lower mounting block (13) is fitted with a mounting sleeve (311), and the mounting sleeve (311) is fitted with a second threaded sleeve (313). The second threaded sleeve (313) is threadedly connected to the second threaded ring (32). A locking component is provided between the mounting sleeve (311) and the lower mounting block (13).

2. A chainsaw shock absorber with improved operational reliability according to claim 1, characterized in that: The dust cover (2) is a corrugated cover and is made of elastic material.

3. A chainsaw shock absorber with improved operational reliability according to claim 1, characterized in that: The engaging assembly between the mounting sleeve (311) and the lower mounting block (13) includes a locking hole (312) inside the mounting sleeve (311).

4. A chainsaw shock absorber with improved operational reliability according to claim 3, characterized in that: The lower mounting block (13) has telescopic grooves (36) on both sides. A locking rod (37) that engages with the locking hole (312) is slidably disposed in the telescopic groove (36). A telescopic spring (38) is fixedly disposed between the locking rod (37) and the telescopic groove (36).

5. A chainsaw shock absorber with improved operational reliability according to claim 4, characterized in that: A lever (39) for moving the lever (37) is fixedly provided on the lever (37), and a sliding groove (310) is provided on the top of the lower mounting block (13), and the lever (39) is slidably connected to the sliding groove (310).

6. A chainsaw vibration damper with improved operational reliability according to claim 1, characterized in that: The shock absorber body (1) also includes a damping rod (11) installed between the upper mounting block (12) and the lower mounting block (13), and a damping spring (14) is sleeved on the damping rod (11) and disposed between the upper mounting block (12) and the lower mounting block (13).

7. A chainsaw vibration damper with improved operational reliability according to claim 6, characterized in that: Connectors (15) are fixedly installed on the top of the upper mounting block (12) and the bottom of the lower mounting block (13).

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