Safety lock assembly, safety lock assembly activation method and garden tool

Abstract

The present invention provides a safety lock assembly, a safety lock assembly activation method, and a garden tool, wherein the safety lock assembly comprises: a self-locking member, the self-locking member cooperates with the trigger to lock the trigger; and an unlocking button, the unlocking button is slidably mounted on the trigger; when the locking portion of the self-locking member abuts against the trigger, the trigger is locked, and the trigger cannot rotate around a first pivot; when the unlocking button is pushed to slide along the trigger, the unlocking button abuts against the self-locking member, so that the locking portion of the self-locking member is out of contact with the trigger, the trigger is unlocked, and the trigger can rotate around the first pivot. Compared with the prior art, the safety lock assembly of the present invention is not only simple in structure and can be operated with one hand, but also, when in use, the user needs to perform an unlocking action in a first direction and then perform an activation trigger action in a second direction, so that the user cannot grasp the trigger with one hand to cause abnormal activation, thereby meeting safety regulations.

Description

Technical Field

[0001] The invention relates to a safety lock assembly, a method for starting the safety lock assembly and a garden tool having the safety lock assembly. Background Art

[0002] Handheld power tools usually have a trigger and a safety lock button that matches the trigger on the operating handle for the user to grasp. When starting the power tool, the user must first turn on the safety lock button to unlock the trigger. This setting is to prevent the power tool from being accidentally started, which would bring potential safety hazards. However, the existing trigger is usually set below the operating handle, and the safety lock button is usually set above or on the side of the operating handle. When the safety lock button is set above the operating handle, the user only needs to press the safety lock button to unlock it. Since the user can unlock the trigger and start the trigger by holding the operating handle with one hand, it is impossible to clearly distinguish these two actions during use, which makes it easy to start by mistake, posing a safety hazard and not meeting safety regulations. The safety lock structure set on the side of the operating handle is relatively complicated, and the user operation is relatively cumbersome.

[0003] In view of the above problems, it is necessary to provide a new safety lock assembly to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a safety lock assembly, which is not only simple in structure and can be operated with one hand, but also, when in use, the user needs to perform an unlocking action in a first direction and then perform a trigger action in a second direction, thereby meeting safety regulations.

[0005] To achieve the above-mentioned purpose, the present invention provides a safety lock assembly for locking / unlocking a trigger pivotally mounted on a housing via a first pivot, comprising: a self-locking member, the self-locking member comprising a locking portion cooperating with the trigger to lock the trigger; and an unlocking button, the unlocking button being mounted on the trigger and being able to slide along the trigger; when the locking portion of the self-locking member abuts against the trigger, the trigger is locked, and at this time the trigger cannot rotate around the first pivot; when the unlocking button is pushed to slide along the trigger, the unlocking button abuts against the self-locking member, so that the locking portion of the self-locking member is out of contact with the trigger, the trigger is unlocked, and at this time the trigger can rotate around the first pivot.

[0006] As a further improvement of the present invention, the self-locking member is pivotally mounted on the housing via a second pivot; when the unlocking button is pushed to slide along the trigger, the unlocking button resists the self-locking member, and at this time the self-locking member rotates around the second pivot so that the locking portion of the self-locking member is out of contact with the trigger.

[0007] As a further improvement of the present invention, the second pivot is perpendicular to the first pivot.

[0008] As a further improvement of the present invention, the safety lock assembly is further provided with a first elastic element matched with the self-locking member; one end of the first elastic element is mounted on the self-locking member, and the other end is mounted on the housing.

[0009] As a further improvement of the present invention, the safety lock assembly is further provided with a second elastic element cooperating with the unlocking button; one end of the second elastic element is mounted on the unlocking button, and the other end is mounted on the trigger.

[0010] As a further improvement of the present invention, the trigger includes a pressing portion and a holding arm located on both sides of the first pivot; the pressing portion is at least partially located outside the shell, and the holding arm is located inside the shell; the self-locking member cooperates with the pressing portion or the holding arm.

[0011] As a further improvement of the present invention, a supporting portion cooperating with the self-locking member is provided on the side of the unlocking button facing the self-locking member, and the supporting portion is wedge-shaped; when the unlocking button is pushed to slide, the supporting portion supports the self-locking member, causing the self-locking member to move.

[0012] As a further improvement of the present invention, the self-locking member is provided with a guiding portion cooperating with the abutting portion to guide the abutting portion to abut against the self-locking member smoothly.

[0013] The present invention also provides a method for activating the aforementioned safety lock assembly, comprising the following steps:

[0014] S1: Sliding the unlock button in a first direction along the trigger, the unlock button abuts against the self-locking member, so that the locking portion of the self-locking member is out of contact with the trigger, and the trigger is unlocked;

[0015] S2: operating the trigger in a second direction to rotate the trigger relative to the housing around the first pivot.

[0016] The present invention also provides a garden tool, comprising an operating mechanism, the operating mechanism is used to realize the function of the garden tool; an operating rod, the operating mechanism is installed at one end of the operating rod; and the aforementioned safety lock assembly, the safety lock assembly is installed on the operating rod.

[0017] The beneficial effects of the present invention are as follows: the safety lock assembly of the present invention is not only simple in structure and can be operated with one hand, but also when in use, the user only needs to perform an unlocking action in a first direction and then perform a triggering action in a second direction, thereby meeting safety regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the garden tool of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the control switch assembly of the present invention.

[0020] Figure 3 It is a schematic diagram of the coordination of the electronic switch, the trigger, and the safety lock assembly when the safety lock assembly is in a locked state.

[0021] Figure 4 It is a schematic diagram of the coordination of the electronic switch, the trigger, and the safety lock assembly when the safety lock assembly is in the unlocked state.

[0022] Figure 5 It is a three-dimensional schematic diagram of a self-locking part.

[0023] Figure 6 It is a structural schematic diagram of the first housing and the speed regulating unit.

[0024] Figure 7 It is a flow chart of the method for starting the safety lock assembly of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] See also Figure 1 As shown, the present invention discloses a garden tool 100, including an operating mechanism 10, an operating rod 20, a battery assembly 30 for supplying power to the operating mechanism 10, and a control switch assembly 40 for controlling the operation of the operating mechanism 10. The operating mechanism 10 is installed at one end of the operating rod 20 to realize the function of the garden tool 100. In this embodiment, the operating mechanism 10 is a grass trimmer, but in other embodiments, the operating mechanism 10 can also be a pruning shear, a pruning knife, etc., and the present invention is not limited to this. The operating rod 20 includes a long cylindrical rod body 21 and an auxiliary handle 22 installed on the rod body 21. The battery assembly 30 is installed at one end of the rod body 21 away from the operating mechanism 10, and the battery assembly 30 includes a battery pack (not shown) for supplying power to the operating mechanism 10 and the control switch assembly 40. Because the battery pack can adopt an existing structure and does not belong to the main protection point of the present invention, it will not be described in detail here. The auxiliary handle 22 is located between the operating mechanism 10 and the battery assembly 30.

[0027] See also Figure 2 as well as Figure 3As shown, the control switch assembly 40 is installed at one end of the rod body 21 away from the operating mechanism 10 and is located between the auxiliary handle 22 and the battery assembly 40. The control switch assembly 40 includes a housing 41 installed on the rod body 21, a trigger 42 pivotally mounted on the housing 41, an electronic switch 43 matched with the trigger 42, a safety lock assembly 44 matched with the trigger 42, and a speed regulating unit 45. Please refer to Figure 2 as well as Figure 5 As shown, the shell 41 includes a first shell 411 and a second shell 412, and the first shell 411 and the second shell 412 are jointly arranged to form a receiving cavity 413. The shell 41 is also provided with a first opening 414 and a second opening 415, and the first opening 414 and the second opening 415 are respectively located on both sides of the shell 41 and are connected to the receiving cavity 413. The rod body 21 passes through the first opening 414, the receiving cavity 413 and the second opening 415 in sequence, so that the shell 41 is fixedly installed on the rod body 21. The first shell 411 is also provided with a travel groove 4111 that cooperates with the speed regulating unit 45. The trigger 42 is pivotally mounted on the shell 41 through a first pivot 421, and the trigger 42 includes a pressing portion 422 and a supporting arm 423 located on both sides of the first pivot 421. The pressing portion 422 is at least partially located outside the shell 41, and the supporting arm 423 is located inside the receiving cavity 413. Please refer to Figure 2 As shown, when the user presses the pressing portion 422 along the second direction AA, the abutting arm 423 rotates around the first pivot 421 under the action of the pressing portion 422, thereby abutting the electronic switch 43, so that the electronic switch 43 is triggered. The electronic switch 43 is used to start the operating mechanism 10. When the abutting arm 423 abuts the electronic switch 43, the electronic switch 43 is triggered, and the electronic switch 43 controls the operation of the operating mechanism 10; when the abutting arm 423 is out of contact with the electronic switch 43, the electronic switch 43 is turned off, and the operating mechanism 10 stops working.

[0028] See also Figure 3 , Figure 4 as well as Figure 2As shown, the safety lock assembly 44 is used to lock / unlock the trigger 42. The safety lock assembly 44 includes a self-locking member 51 that cooperates with the trigger 42, a first elastic element (not shown) that cooperates with the self-locking member 51, an unlocking button 52 installed on the trigger 42, and a second elastic element (not shown) that cooperates with the unlocking button 52. The self-locking member 51 includes a self-locking block 511 that cooperates with the trigger 42 and a second pivot 512 located on one side of the self-locking block 511. The self-locking block 511 is pivotally mounted on the housing 41 via the second pivot 512 so that the self-locking block 511 can rotate around the second pivot 512. Please refer to Figure 5As shown, the self-locking block 511 is further provided with a guide portion 5111, a locking portion 5112 and a limiting portion 5113 on the side away from the second pivot 512. The connecting line of the guide portion 5111, the locking portion 5112 and the limiting portion 5113 is substantially parallel to the axis of the second pivot 512, and the locking portion 5112 is located between the guide portion 5111 and the limiting portion 5113. In this embodiment, the second pivot 512 is arranged to be perpendicular to the first pivot 421, but it can be understood that in other embodiments, the second pivot 512 may not be perpendicular to the first pivot 421, for example, the second pivot 512 is parallel to the first pivot 421. In this embodiment, when the self-locking member 51 is rotated so that the locking portion 5112 contacts and abuts the trigger 42, the trigger 42 is locked, and the trigger 42 cannot rotate around the first pivot 421; when the self-locking member 51 is rotated so that the locking portion 5112 is out of contact with the trigger 42, the trigger 42 is unlocked, and the trigger 42 can rotate around the first pivot 421, and the maximum rotation stroke is limited by the limiting portion 5113. A positioning groove 5114 is also provided on the side wall of the self-locking block 511 to match the first elastic element to fix the first elastic element. One end of the first elastic element is fixedly installed in the positioning groove 5114, and the other end is fixedly installed on the housing 41. The unlocking button 52 includes a main body 521 installed on the pressing portion 422, a holding portion 522 formed by protruding outward from one side of the main body 521, and a boosting portion 523. The main body 521 is slidably mounted on the pressing portion 422 so that the main body 521 can slide along the pressing portion 422 in the first direction BB. In this embodiment, a receiving cavity is provided in the main body 521 to at least partially accommodate the pressing portion 422. The abutting portion 522 is wedge-shaped, located on the side of the main body 521 facing the self-locking member 51, and cooperates with the guide portion 5111. The boosting portion 523 is located on one side of the main body 521 and is substantially perpendicular to the main body 521, so that the user can push the main body 521 to slide along the pressing portion 422 in the first direction BB through the boosting portion 523. One end of the second elastic element is mounted on the unlocking button 52, and the other end is mounted on the pressing portion 422. In this embodiment, the second elastic element is mounted in the receiving cavity of the main body 521. The speed regulating unit 45 includes a speed regulating button 451 installed in the travel slot 4111 and a speed electric control switch 452 matched with the speed regulating button 451. The speed regulating button 451 can slide in the travel slot 4111. The speed electric control switch 452 is used to adjust the working speed of the operating mechanism 10. In this embodiment, the speed electric control switch 452 has two working speeds.When the user pushes the speed adjustment button 451 in the first state, the speed electric control switch 452 controls the operating mechanism 10 to operate at the first speed; when the user pushes the speed adjustment button 451 in the second state, the speed electric control switch 452 controls the operating mechanism 10 to operate at the second speed.

[0029] See also Figure 7 As shown, the present invention also discloses a method for starting the safety lock assembly 44, comprising the following steps:

[0030] S1: Slide the unlock button 52 in the first direction BB along the trigger 42, the unlock button 52 abuts against the self-locking member 51, so that the locking portion 5112 of the self-locking member 51 is out of contact with the trigger 42, and the trigger 42 is unlocked;

[0031] S2: The trigger 42 is operated in the second direction AA, so that the trigger 42 rotates relative to the housing 41 around the first pivot 421, so that the abutting arm 423 of the trigger 42 contacts the telescopic arm of the electronic switch 43. When the pressing portion 422 of the trigger 42 contacts the limiting portion 5113, the movement stroke of the trigger 42 reaches the maximum limit, so that the electronic switch 43 is stably activated, and the operating mechanism 10 starts to work.

[0032] See also Figure 4 As shown, when the user pushes the unlocking button 52 along the first direction BB so that the unlocking button 52 slides along the pressing portion 422, the second elastic element is elastically deformed, the abutting portion 522 abuts against the guide portion 5111, and drives the self-locking block 511 to rotate around the second pivot 512, so that the locking portion 5112 is out of contact with the pressing portion 422 of the trigger 42. At this time, the first elastic element is in an elastic deformation state, and the trigger 42 is in an unlocked state, and the user can press the trigger 42 along the second direction AA; when the user releases the unlocking button 52, the unlocking button 52 is reset under the action of the second elastic element, the abutting portion 522 is out of contact with the guide portion 5111, and the self-locking block 511 is reset under the action of the first elastic element. At this time, the locking portion 5112 contacts and abuts against the pressing portion 422 (as shown in FIG. 4 ). Figure 3 As shown in FIG. 4 , the trigger 42 is in a locked state, and the user cannot press the trigger 42. When in use, the user needs to first perform an unlocking action in the first direction BB, and then start the trigger 42 in the second direction AA, so that the trigger 42 will not be abnormally started due to being pressed accidentally when not in use, and the safety factor is high, meeting the safety requirements. In addition, since the safety lock assembly 44 is arranged on the trigger 42, it is convenient for the user to perform operations such as unlocking and starting the trigger 42 with one hand, which is convenient for the user to use.

[0033] In the present embodiment, the self-locking member 51 is configured to cooperate with the pressing portion 422, but in other embodiments, the self-locking member 51 may also be configured to cooperate with the abutting arm 423. In the present embodiment, the self-locking member 51 and the unlocking button 52 are configured such that when the unlocking button 52 is pushed to slide toward the first pivot 421, the unlocking button 52 abuts against the self-locking member 51, so that the locking portion 5112 of the self-locking member 51 is out of contact with the trigger 42, but in other embodiments, the self-locking member 51 and the unlocking button 52 may also be configured such that when the unlocking button 52 is pushed to slide in a direction away from the first pivot 421, the unlocking button 52 abuts against the self-locking member 51, so that the locking portion of the self-locking member 51 is out of contact with the trigger 42.

[0034] Compared to the prior art, the safety lock assembly 44 of the present invention is not only simple in structure and can be operated with one hand, but also, when in use, the user needs to perform an unlocking action in a first direction and then perform a trigger action in a second direction, so that the user cannot grasp the trigger with one hand and cause an abnormal start, thereby meeting safety regulations.

[0035] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A safety lock assembly for locking / unlocking a trigger pivotally mounted on a housing via a first pivot, characterized in that: include: A self-locking member, wherein the self-locking member is pivotally mounted on the housing via a second pivot, wherein the second pivot is perpendicular to the first pivot, and the self-locking member includes a locking portion that cooperates with the trigger to lock the trigger; as well as An unlock button, the unlock button comprising a main body and a holding portion protruding outward from one side of the main body, the main body being slidably mounted on the trigger so that the main body slides along the trigger; When the locking portion of the self-locking member abuts against the trigger, the trigger is locked, and the trigger cannot rotate around the first pivot. When the unlocking button is pushed to slide along the trigger, the unlocking button abuts against the self-locking part, and the self-locking part rotates around the second pivot, so that the locking portion of the self-locking part is out of contact with the trigger, and the trigger is unlocked. At this time, the trigger can rotate around the first pivot.

2. The safety lock assembly according to claim 1, characterized in that: The safety lock assembly is also provided with a first elastic element matched with the self-locking element; one end of the first elastic element is installed on the self-locking element, and the other end is installed on the shell.

3. The safety lock assembly according to claim 1, characterized in that: The safety lock assembly is also provided with a second elastic element matched with the unlocking button; one end of the second elastic element is installed on the unlocking button, and the other end is installed on the trigger.

4. The safety lock assembly according to claim 1, characterized in that: The trigger includes a pressing portion and a holding arm located on both sides of the first pivot; the pressing portion is at least partially located outside the shell, and the holding arm is located inside the shell; the self-locking member cooperates with the pressing portion or the holding arm.

5. The safety lock assembly according to claim 1, characterized in that: The abutment is arranged on a side of the unlocking button facing the self-locking part, the abutment cooperates with the self-locking part, and the abutment is wedge-shaped; when the unlocking button is pushed to slide, the abutment abuts the self-locking part, causing the self-locking part to move.

6. The safety lock assembly according to claim 5, characterized in that: The self-locking member is provided with a guiding portion matched with the abutting portion to guide the abutting portion to abut against the self-locking member smoothly.

7. A method for activating the safety lock assembly according to any one of claims 1 to 6, characterized in that: The steps include: S1: Sliding the unlock button in a first direction along the trigger, the unlock button abuts against the self-locking member, so that the locking portion of the self-locking member is out of contact with the trigger, and the trigger is unlocked; S2: operating the trigger in a second direction to rotate the trigger relative to the housing around the first pivot.

8. A garden tool, characterized in that: include: An operating mechanism, the operating mechanism is used to realize the function of the garden tool; An operating rod, the operating mechanism being mounted on one end of the operating rod; as well as The safety lock assembly according to any one of claims 1 to 6, wherein the safety lock assembly is mounted on the operating rod.

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