Chain saw brake structure

Abstract

The utility model discloses a chain saw brake structure, including installation cylinder, change-over switch no.

Description

Technical Field

[0001] This utility model relates to the field of chainsaw technology, specifically to a chainsaw braking structure. Background Technology

[0002] With the promotion of environmental protection and energy conservation, electric chainsaws have gradually replaced hydraulic chainsaws. However, because electric chainsaws are faster, after the power switch is turned off, the chainsaw will continue to run for a certain period of time before it can stop completely due to inertia. When an emergency occurs and immediate braking is required, the power switch is obviously not sufficient.

[0003] For example, a chainsaw braking structure with application number CN201922288968.X and authorization announcement date of 20201009 belongs to the field of chainsaw technology. It solves the problems of poor safety and complex assembly of existing chainsaw braking structures. This chainsaw braking structure includes a shell, a power component, a braking component, and a protective plate. By setting a rotating block on the lower side of the protective plate and connecting it with a connecting component, during braking, the rotating block can control the connecting component to brake in time via the brake steel band. At the same time, the drive motor is equipped with a power controller. When the rotating block rotates to a certain angle, the paddle at the lower end of the rotating block connects with the power controller. When connected, the power controller shuts down the drive motor. By using the rotating block to both brake and control the motor to shut down, the overall safety performance of the device is ensured. At the same time, the structure is relatively simple. This chainsaw braking structure has the advantages of good safety performance and simple assembly.

[0004] For example, the chainsaw braking structure with application number CN201922288968.X achieves synchronized mechanical braking and power cut-off by using a rotating block to link the brake belt and power controller. While this design improves safety, it still has the following shortcomings:

[0005] (1) The single-stage triggering mechanism of the rotating block lacks a transition phase of the brake preparation state, which may lead to mechanical shock caused by sudden emergency stop;

[0006] (2) The power supply control relies on a single switch and no redundant circuit protection is set up, which poses a risk of false triggering;

[0007] (3) The reset mechanism relies on manual operation and cannot automatically return to the standby state, which affects the efficiency of continuous operation;

[0008] In the existing technology, there is an urgent need for a chainsaw brake structure with two-stage braking position, circuit redundancy protection and automatic reset function to solve the above-mentioned technical defects. Utility Model Content

[0009] The purpose of this invention is to provide a chainsaw braking structure to address the aforementioned shortcomings in the prior art.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A chainsaw brake structure includes a mounting cylinder, a first selector switch, a spring mounting base, a toggle switch, and a second selector switch;

[0012] The outer wall of one side of the mounting cylinder is integrally formed with a stop plate, a pressure rod and a lever, and one end of the lever is provided with two stop grooves.

[0013] A stop block is installed inside the spring mounting seat via a hinge, and the lever contacts the stop block through the stop slot;

[0014] A top spring is fixedly installed on one side of the outer wall of the stop block, and the other end of the top spring is in contact with the inner wall of the spring mounting seat.

[0015] The selector switch is equipped with a push button, and its outer wall is electrically connected to a power terminal a, a power terminal b and a power terminal c.

[0016] The second changeover switch is equipped with a second push button, and its outer wall is electrically connected to a second power terminal a, a second power terminal b, and a second power terminal c.

[0017] The toggle switch is mechanically linked to the lever, which can trigger the pressing action of the second pressing button.

[0018] Furthermore, when the pressure rod presses the first pressing key, the connection between the first energized terminal a and the first energized terminal b is disconnected, and at the same time, the second circuit of the changeover switch is in a de-energized state, thereby stopping the chainsaw.

[0019] When the pressure lever is not pressed, the power terminals a and b remain connected, and the switch is in the power-on state when the switch is in the circuit, allowing the chainsaw to run.

[0020] Furthermore, when the toggle switch presses the second button, a circuit is formed between the second power terminal and the second power terminal, and the chainsaw operates normally;

[0021] When the toggle switch is not pressed, the power terminal a and the power terminal b form a circuit, and the chainsaw enters the braking preparation state.

[0022] Furthermore, the engagement of the gear slot and the stop block forms two braking positions: the first is the ready braking state, and the second is the fully braking state.

[0023] The top spring provides the restoring force to the stop block, ensuring that it can automatically reset after the braking action is completed.

[0024] In the above technical solution, the chainsaw braking structure provided by this utility model has the following beneficial effects:

[0025] (1) This utility model forms a dual-state switching mechanism of preparing to brake and fully braking by using a stepped combination design of the gear slot and the stop block. This effectively alleviates the mechanical impact load during emergency stop, reduces the instantaneous impact force of braking, and significantly extends the life of transmission components. At the same time, it adopts dual electrical control modules of switch one and switch two. When the pressure rod triggers the pressing key one, it achieves hard power cut-off by physically disconnecting the power terminal one a and the power terminal one b. At the same time, switch two synchronously cuts off the backup circuit to eliminate the risk of accidental triggering.

[0026] (2) The reset force provided by the top spring of this utility model can ensure that the stop block automatically returns to the standby position within seconds after the braking action is completed, which greatly improves the efficiency compared with the traditional manual reset structure.

[0027] (3) The mechanical linkage structure of the lever and the toggle switch of this utility model accurately converts the mechanical displacement of the brake preparation state into the button travel, realizing the millisecond-level synchronous response of mechanical braking and circuit control. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a chainsaw braking structure according to the present invention.

[0030] Figure 2 The schematic diagram shows the structure of the mounting cylinder, stop plate, spring mounting seat, toggle switch, and changeover switch one and changeover switch two provided in an embodiment of the chainsaw brake structure of this utility model.

[0031] Figure 3 This is a schematic diagram of the mounting cylinder, stop plate, and spring mounting seat provided in an embodiment of a chainsaw brake structure according to this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Mounting cylinder; 2. Stop plate; 3. Pressure rod; 4. Changeover switch one; 5. Power terminal one a; 6. Power terminal one b; 7. Power terminal one c; 8. Press button one; 9. Toggle lever; 10. Stop groove; 11. Spring mounting seat; 12. Stop block; 13. Toggle switch; 14. Changeover switch two; 15. Press button two; 16. Power terminal two a; 17. Power terminal two b; 18. Power terminal two c; 19. Top position spring. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1-3 As shown, the present invention provides a chainsaw brake structure, including a mounting cylinder 1, a first changeover switch 4, a spring mounting seat 11, a toggle switch 13, and a second changeover switch 14.

[0036] One side of the outer wall of the mounting cylinder 1 is integrally formed with a baffle plate 2, a pressure rod 3 and a lever 9, and one end of the lever 9 is provided with two baffle grooves 10.

[0037] A stop block 12 is mounted inside the spring mounting base 11 via a hinge, and the lever 9 contacts the stop block 12 via the stop groove 10;

[0038] A top spring 19 is fixedly installed on one side of the outer wall of the stop block 12, and the other end of the top spring 19 is in contact with the inner wall of the spring mounting seat 11.

[0039] The changeover switch 4 is equipped with a push button 8, and its outer wall is electrically connected to a power terminal 1a5, a power terminal 1b6 and a power terminal 1c7.

[0040] The changeover switch 14 is equipped with a push button 15, and its outer wall is electrically connected to a power terminal 2a16, a power terminal 2b17 and a power terminal 2c18.

[0041] The toggle switch 13 is mechanically linked with the lever 9, which can trigger the pressing action of the second button 15.

[0042] Specifically, in this embodiment, it includes a mounting cylinder 1, a first changeover switch 4, a spring mounting base 11, a toggle switch 13, and a second changeover switch 14;

[0043] One side of the outer wall of the mounting cylinder 1 is integrally formed with a baffle plate 2, a pressure rod 3 and a lever 9, and one end of the lever 9 is provided with two baffle grooves 10.

[0044] A stop block 12 is mounted inside the spring mounting base 11 via a hinge, and the lever 9 contacts the stop block 12 via the stop groove 10;

[0045] A top spring 19 is fixedly installed on one side of the outer wall of the stop block 12, and the other end of the top spring 19 is in contact with the inner wall of the spring mounting seat 11.

[0046] The changeover switch 4 is equipped with a push button 8, and its outer wall is electrically connected to a power terminal 1a5, a power terminal 1b6 and a power terminal 1c7.

[0047] The changeover switch 14 is equipped with a push button 15, and its outer wall is electrically connected to a power terminal 2a16, a power terminal 2b17 and a power terminal 2c18.

[0048] Changeover switch 14 controls the on / off state of the main circuit:

[0049] Power is supplied when power terminals a5 and b6 are connected.

[0050] When power-on terminal A5 and power-on terminal C7 are connected, the backup protection circuit is activated.

[0051] Changeover switch 2 (14) enables state switching:

[0052] The circuit between power terminal 2 a16 and power terminal 2 c18 is in operating mode.

[0053] The circuit between power terminal a16 and power terminal b17 activates the brake preparation.

[0054] The toggle switch 13 is mechanically linked to the lever 9, which can trigger the pressing action of the second button 15.

[0055] It should be noted that the pressure rod 3 integrated in the mounting cylinder 1 triggers the pressing button 8 of the changeover switch 4 through a physical pressing action, forcibly disconnecting the connection between the power terminal a5 and the power terminal b6, thereby achieving a hard power cut-off of the main circuit.

[0056] The lever 9 engages with the stop block 12 in a stepped manner through the stop groove 10, forming two mechanical limit states: the first stage of preparation for braking and the second stage of full braking.

[0057] The linkage mechanism between the toggle switch 13 and the lever 9 converts the mechanical displacement into the precise trigger stroke of the pressing key 15.

[0058] This utility model provides a chainsaw braking structure that, through the stepped cooperation design of the stop slot 10 and the stop block 12, forms a dual-state switching mechanism for preparing to brake and fully braking, effectively alleviating the mechanical impact load during emergency stops, reducing the instantaneous impact force during braking, and significantly extending the life of transmission components. At the same time, it adopts a dual electrical control module with a first switch 4 and a second switch 14. When the pressure rod 3 triggers the pressing key 8, the power is hardened by physically disconnecting the power terminals 1a5 and 1b6. Simultaneously, the second switch 14 cuts off the backup circuit, eliminating the risk of accidental triggering.

[0059] In one embodiment provided by this utility model, such as Figure 2-3 As shown, when the pressure lever 3 presses the pressure key 8, the power terminal a5 and the power terminal b6 are disconnected, and at the same time the circuit of the changeover switch 14 is in the de-energized state, thus stopping the chainsaw.

[0060] When the lever 3 is not pressed, the power terminal a5 and the power terminal b6 remain connected, and the changeover switch 14 is in the power-on state when it is on, allowing the chainsaw to run.

[0061] When the toggle switch 13 presses the second button 15, the second power terminal a16 and the second power terminal c18 form a circuit, and the chainsaw operates normally.

[0062] When the toggle switch 13 is not pressed and the button 15 is not pressed, the power terminal a16 and the power terminal b17 form a circuit, and the chainsaw enters the brake preparation state.

[0063] In another embodiment provided by this utility model, such as Figure 1-3 As shown, the engagement of the gear slot 10 and the stop block 12 forms two braking positions: the first is the ready braking state, and the second is the fully braking state.

[0064] The top spring 19 provides the return force to the stop block 12, ensuring that it can automatically reset after the braking action is completed.

[0065] Example 1

[0066] A chainsaw brake structure includes a mounting cylinder 1, a first selector switch 4, a spring mounting base 11, a toggle switch 13, and a second selector switch 14.

[0067] One side of the outer wall of the mounting cylinder 1 is integrally formed with a baffle plate 2, a pressure rod 3 and a lever 9, and one end of the lever 9 is provided with two baffle grooves 10.

[0068] A stop block 12 is mounted inside the spring mounting base 11 via a hinge, and the lever 9 contacts the stop block 12 via the stop groove 10;

[0069] A top spring 19 is fixedly installed on one side of the outer wall of the stop block 12, and the other end of the top spring 19 is in contact with the inner wall of the spring mounting seat 11.

[0070] The changeover switch 4 is equipped with a push button 8, and its outer wall is electrically connected to a power terminal 1a5, a power terminal 1b6 and a power terminal 1c7.

[0071] The changeover switch 14 is equipped with a push button 15, and its outer wall is electrically connected to a power terminal 2a16, a power terminal 2b17 and a power terminal 2c18.

[0072] Changeover switch 14 controls the on / off state of the main circuit:

[0073] Power is supplied when power terminals a5 and b6 are connected.

[0074] When power-on terminal A5 and power-on terminal C7 are connected, the backup protection circuit is activated.

[0075] Changeover switch 2 (14) enables state switching:

[0076] The circuit between power terminal 2 A16 and power terminal 2 C18 is in operating mode.

[0077] The circuit between power terminal a16 and power terminal b17 activates the brake preparation.

[0078] The toggle switch 13 is mechanically linked to the lever 9, which can trigger the pressing action of the second button 15.

[0079] It should be noted that the pressure rod 3 integrated in the mounting cylinder 1 triggers the pressing button 8 of the changeover switch 4 through a physical pressing action, forcibly disconnecting the connection between the power terminal a5 and the power terminal b6, thereby achieving a hard power cut-off of the main circuit.

[0080] The lever 9 engages with the stop block 12 in a stepped manner through the stop groove 10, forming two mechanical limit states: the first stage of preparation for braking and the second stage of full braking.

[0081] The linkage mechanism between the toggle switch 13 and the lever 9 converts the mechanical displacement into the precise trigger stroke of the pressing key 15.

[0082] Example 2

[0083] This embodiment further defines the embodiment 1. When the pressure rod 3 presses the pressure key 8, the connection between the power terminal a5 and the power terminal b6 is disconnected, and at the same time, the circuit of the changeover switch 14 is in a de-energized state, thereby stopping the chainsaw.

[0084] When the lever 3 is not pressed, the power terminal a5 and the power terminal b6 remain connected, and the changeover switch 14 is in the power-on state when it is on, allowing the chainsaw to run.

[0085] When the toggle switch 13 presses the second button 15, the second power terminal a16 and the second power terminal c18 form a circuit, and the chainsaw operates normally.

[0086] When the toggle switch 13 is not pressed and the button 15 is not pressed, the power terminal a16 and the power terminal b17 form a circuit, and the chainsaw enters the brake preparation state.

[0087] The engagement of the gear slot 10 and the stop block 12 forms two braking positions: the first is the ready braking state, and the second is the fully braking state.

[0088] The top spring 19 provides the return force to the stop block 12, ensuring that it can automatically reset after the braking action is completed.

[0089] Working principle: When lever 3 is not triggered, energized terminals a5 and b6 remain connected, and selector switch 14 is in energized standby mode; when toggle switch 13 presses button 15: energized terminals a16 and c18 are connected, and the drive motor receives a complete power supply; stop block 12 disengages from stop slot 10, and the transmission system experiences no mechanical interference; lever 9 displaces and triggers first-level stop slot 10, and stop block 12 partially embeds into the slot, generating initial frictional resistance; toggle switch 13 releases button 15: the circuit automatically... The circuit is switched to the power supply terminals a16 and b17; the top spring 19 begins to pre-compress to store elastic potential energy for full braking; when fully braking, the lever 3 triggers the button 8: the main circuit is hard disconnected and the power supply terminals a5 and b6 are separated, the switch 14 simultaneously cuts off the backup circuit, and the stop block 12 is fully engaged in the secondary gear slot 10: the mechanical braking and circuit disconnection are synchronized at the millisecond level, the top spring 19 releases energy, and pushes the stop block 12 to reset to the standby position within 0.1 seconds.

[0090] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A chainsaw brake structure, comprising a mounting cylinder (1), a first selector switch (4), a spring mounting base (11), a toggle switch (13), and a second selector switch (14), characterized in that: The mounting cylinder (1) has a baffle plate (2), a pressure rod (3) and a lever (9) integrally formed on one side of its outer wall. The lever (9) has two baffle grooves (10) at one end. The spring mounting base (11) has a stop block (12) installed inside by a hinge, and the lever (9) contacts the stop block (12) through the stop groove (10); A top spring (19) is fixedly installed on one side of the outer wall of the stop block (12), and the other end of the top spring (19) is in contact with the inner wall of the spring mounting seat (11); The changeover switch 1 (4) is equipped with a push button 1 (8), and its outer wall is electrically connected to a power terminal 1 a (5), a power terminal 1 b (6) and a power terminal 1 c (7). The second changeover switch (14) is equipped with a second push button (15), and its outer wall is electrically connected to a second power terminal a (16), a second power terminal b (17) and a second power terminal c (18). The toggle switch (13) is mechanically linked with the lever (9) and can trigger the pressing action of the second pressing key (15).

2. The chain saw brake structure according to claim 1, characterized in that When the pressure rod (3) presses the first key (8), the power terminal a (5) and the power terminal b (6) are disconnected, and at the same time the circuit of the second changeover switch (14) is in the power-off state, so as to realize the chainsaw brake and stop. When the pressure bar (3) is not pressed, the power terminal a (5) and the power terminal b (6) remain connected, and the changeover switch (14) is in the power-on state when it is on, allowing the chainsaw to run.

3. The chain saw brake structure according to claim 1, wherein When the toggle switch (13) presses the second key (15), the second power terminal a (16) and the second power terminal c (18) form a circuit, and the chainsaw operates normally; When the toggle switch (13) is not pressed, the power terminal a (16) and the power terminal b (17) form a circuit, and the chainsaw enters the brake preparation state.

4. The chain saw brake structure according to claim 1, wherein The engagement of the gear slot (10) and the stop block (12) forms a two-stage braking position, with the first stage being the ready-to-brake state and the second stage being the fully braked state. The top spring (19) provides the restoring force to the stop block (12), ensuring that it can automatically reset after the braking action is completed.

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