Starter for chain saw
By designing anti-disengagement devices and limit columns in the chain saw starter, the problem of easy run out of the reset spring is solved, ensuring the stability and working progress of the starter.
Patent Information
- Application Number
- CN202422540511.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The reset spring of the gasoline chain saw can easily run out of the installation position of the starter after a long period of use, affecting the working progress.
A starter including a starter cover, a placement disc, an anti-disengagement device and a limiting column is designed to prevent the return spring from running out of the opening, and an anti-disengagement device composed of a press plate, a placement column, a screw and a baffle, is used to limit the range of movement of the return spring in combination with the limiting column.
It effectively avoids the reset spring running out of the starter position after a long time of use, ensuring the stability and working progress of the starter.
Smart Images
Figure CN223256982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chain saws, in particular to a starter for chain saws. Background Art
[0002] Gasoline chainsaws (also known as oil saws) powered by small gasoline engines are increasingly used worldwide in forestry, landscaping, and gardening due to their powerful, compact, lightweight, and portable design. Most gasoline chain saws utilize a simple, manual, self-resetting starter system. When the starter cord is pulled, the return spring retracts. This can cause the return spring to move out of its position after prolonged use, hindering work progress. Utility Model Content
[0003] In order to solve the above problems, the present invention provides the following technical solutions:
[0004] The utility model provides a starter for a chain saw, comprising a starting cover and a reset spring, wherein a placement disk for placing the reset spring is provided in the starting cover, an opening for the reset spring to pass through is provided on the placement disk, and an anti-slip device is provided at the opening to prevent the reset spring from running out of the opening.
[0005] Furthermore, the anti-slip device includes a pressure plate, which is fixedly arranged at both ends of the opening of the placement tray.
[0006] Furthermore, a placement column is provided at the opening, a placement hole is provided in the placement column, and an internal thread is provided in the placement hole.
[0007] Furthermore, the anti-slip device includes a screw and a baffle, the baffle is provided with a through hole, the screw passes through the through hole and is threadedly connected to the placement hole, and the baffle is arranged above the opening.
[0008] Furthermore, a limiting column is provided at the opening in the reset direction of the reset spring, and the limiting column is used to limit the range of movement of the reset spring.
[0009] Furthermore, the distance between the limiting post and the placement tray is smaller than the distance between the two ends of the placement tray opening.
[0010] Furthermore, a central axis is provided on the placement plate.
[0011] Furthermore, the starter also includes a wire drum, an energy storage spring box, an energy storage spring, a ratchet, a starting handle and a starting rope, one end of the starting rope is connected to the wire drum, and the other end of the starting rope extends through the rope hole on the side of the starting cover, passes through the starting rope loop and is connected to the starting handle; along the extension direction of the central axis, the reset spring, wire drum, energy storage spring box, energy storage spring and ratchet are coaxially arranged from bottom to top, and are screwed to the central axis by screws; one end of the reset spring is connected to the starting cover, and the other end is connected to the wire drum.
[0012] The utility model has the following beneficial effects:
[0013] The utility model is provided with a limit column and an anti-dropping device, which limits the displacement of the reset spring and prevents the easy-to-start return coil from running out of the installation position of the starter after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Schematic diagram of the starting cover with an anti-slip device in Example 1.
[0015] Figure 2 Schematic diagram of the start cover of Example 1.
[0016] Figure 3 It is an exploded view of the present utility model.
[0017] Figure 4 Schematic diagram of the starting cover with an anti-slip device in Example 2.
[0018] Figure 5 Schematic diagram of the start cover of Example 2. DETAILED DESCRIPTION
[0019] The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. It should be pointed out that the embodiments are only specific explanations of the utility model and should not be regarded as limitations of the utility model. The purpose of the embodiments is to enable those skilled in the art to better understand and reproduce the technical solutions of the present invention. The scope of protection of the present invention shall still be based on the scope defined by the claims.
[0020] Example 1
[0021] like Figure 1-2As shown, this embodiment provides a starter for a chainsaw, comprising a starter cover 1 and a return spring 2. A placement tray 11 for the return spring is provided within the starter cover 1. The placement tray 11 is provided with an opening 12 for the return spring to pass through. An anti-slip device 3 is provided at the opening 12 to prevent the return spring 2 from escaping from the opening 12. The anti-slip device 3 comprises a pressure plate 31 fixedly disposed at both ends of the opening 12 of the placement tray. A limiting post 13 is provided at the opening in the return direction of the return spring 2. The limiting post 13 is used to limit the range of motion of the return spring 2. The distance between the limiting post 13 and the placement tray is less than the distance between the two ends of the opening of the placement tray 11.
[0022] like Figure 3 As shown, the placement tray 11 is provided with a central axis 14. The starter also includes a wire drum 4, an energy storage spring box 5, an energy storage spring 6, a ratchet 7, a starting handle 8, and a starting rope 9. One end of the starting rope 9 is connected to the wire drum 4, and the other end of the starting rope 9 extends through the rope hole on the side of the starting cover 1, passes through the starting rope loop 10, and is connected to the starting handle 8. Along the extension direction of the central axis 14, the return spring 2, wire drum 4, energy storage spring box 5, energy storage spring 6, and ratchet 7 are coaxially arranged from bottom to top and are screwed to the central axis by screws 11. One end of the return spring 2 is connected to the starting cover 1, and the other end is connected to the wire drum 4.
[0023] Example 2
[0024] like Figure 4-5 As shown, this embodiment provides a starter for a chainsaw, comprising a starting cover 1 and a reset spring 2. The starting cover 1 is provided with a placement tray 11 for placing the reset spring. The placement tray 11 is provided with an opening 12 for the reset spring to pass through. The opening 12 is provided with an anti-slip device 3 for preventing the reset spring 2 from escaping from the opening 12. The opening 12 is provided with a placement column 121, and the placement column 121 is provided with a placement hole 122. The placement hole 122 is provided with an internal thread. The anti-slip device 3 includes a screw 32 and a baffle 33. The baffle 33 is provided with a through hole. The screw 32 passes through the through hole and is threadedly connected to the placement hole 122. The baffle 33 is arranged above the opening 12. A limiting column 13 is provided at the opening in the reset direction of the reset spring 2. The limiting column 13 is used to limit the range of movement of the reset spring 2. The distance between the limiting column 13 and the placement tray is less than the distance between the two ends of the opening of the placement tray 11.
[0025] like Figure 3As shown, the placement tray 11 is provided with a central axis 14. The starter also includes a wire drum 4, an energy storage spring box 5, an energy storage spring 6, a ratchet 7, a starting handle 8, and a starting rope 9. One end of the starting rope 9 is connected to the wire drum 4, and the other end of the starting rope 9 extends through the rope hole on the side of the starting cover 1, passes through the starting rope loop, and is connected to the starting handle 8. Along the extension direction of the central axis 14, the return spring 2, wire drum 4, energy storage spring box 5, energy storage spring 6, and ratchet 7 are coaxially arranged from bottom to top and are screwed to the central axis. One end of the return spring 2 is connected to the starting cover 1, and the other end is connected to the wire drum 4.
[0026] The utility model is provided with a limit column and an anti-dropping device, which limits the displacement of the reset spring and prevents the easy-to-start return coil from running out of the installation position of the starter after long-term use.
[0027] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.
[0028] It should be noted that the technical features not described in detail in the present invention can be achieved by any existing technology.
Claims
1. A starter for a chainsaw, comprising a starter cover and a return spring, wherein a placement plate for the return spring is provided in the starter cover, and an opening for the return spring to pass through is provided on the placement plate, characterized in that: An anti-slip device is provided at the opening to prevent the return spring from escaping from the opening.
2. A starter for a chainsaw according to claim 1, characterized in that: The anti-slip device includes a pressing plate, which is fixedly arranged at both ends of the opening of the placement tray.
3. A starter for a chainsaw according to claim 1, characterized in that: A placement column is provided at the opening, a placement hole is provided in the placement column, and an internal thread is provided in the placement hole.
4. A starter for a chainsaw according to claim 3, characterized in that: The anti-slip device includes a screw and a baffle. The baffle is provided with a through hole. The screw passes through the through hole and is threadedly connected to the placement hole. The baffle is arranged above the opening.
5. A starter for a chainsaw according to claim 1, characterized in that: A limiting column is provided at the opening in the reset direction of the reset spring, and the limiting column is used to limit the movable range of the reset spring.
6. A starter for a chainsaw according to claim 5, characterized in that: The distance between the limiting column and the placement tray is smaller than the distance between the two ends of the placement tray opening.
7. A starter for a chainsaw according to claim 1, characterized in that: The placing plate is provided with a central axis.
8. A starter for a chainsaw according to claim 7, characterized in that: The starter also includes a wire drum, an energy storage spring box, an energy storage spring, a ratchet, a starting handle and a starting rope. One end of the starting rope is connected to the wire drum, and the other end of the starting rope extends through the rope hole on the side of the starting cover and passes through the starting rope loop to be connected to the starting handle; along the extension direction of the central axis, the reset spring, wire drum, energy storage spring box, energy storage spring, and ratchet are coaxially arranged in sequence from bottom to top, and are screwed to the central axis by screws; one end of the reset spring is connected to the starting cover, and the other end is connected to the wire drum.