Adjusting push rod assembly of gardening tool

Abstract

The utility model discloses an adjusting push rod assembly of a gardening tool. The adjusting push rod assembly comprises a fixed rod, a telescopic rod, a push rod and a starting holding rod. The number of the fixing rods is two, and the two fixing rods are fixedly arranged on the left side and the right side of the corresponding gardening tool machine body respectively. The number of the telescopic rods is two. The push rod is fixedly arranged at the rear ends of the two telescopic rods, and the starting holding rod is arranged on the push rod. The number of the locking devices is two, and the two locking devices are fixedly arranged at the rear ends of the corresponding fixing rods respectively. The two telescopic rods are arranged on the corresponding locking devices in a sliding mode respectively, and the front portions of the telescopic rods stretch into the fixing rod. And the telescopic rods are fixedly connected with the corresponding fixed rods through the locking devices. And a mounting groove is formed in the inner side of the front part of one telescopic rod. The safe starting device adopts a Hall switch and a magnet. The magnet is arranged in an installation groove of the telescopic rod, and the Hall switch is arranged in a locking device of the telescopic rod where the magnet is located.

Description

Technical Field

[0001] This utility model relates to the field of garden tool technology, and in particular to the adjustment push rod assembly of garden tools such as lawn combers, tillers and mowers. Background Technology

[0002] One category of garden tools is used for lawn management, commonly including lawn defoliators, lawn looseners, and lawn mowers. A lawn defoliator (also called a lawn aerator) uses wire claws in its assembly to remove dead leaves and other humus from the soil surface, improving the lawn's aeration. A lawn loosener is used to loosen the soil, improving the growing environment for plant roots. A lawn mower is generally used by users to trim lawns, making them smoother and more aesthetically pleasing. These devices are typically propelled by a handle (also called a push bar). For ease of storage and transport, the handle is usually telescopic and adjustable in length. When not in use or during transport, the handle is retracted close to the machine body to reduce its size and height; when in use, the handle is pulled out. To ensure user safety during operation (preventing the user's feet from touching the wire claws or blades under the machine while walking), the machine can only be started when the handle is fully extended. Chinese patent document CN207120188U discloses a telescopic push rod mechanism and a power tool having the same mechanism. The telescopic push rod mechanism is equipped with a switch protection device. During use, the micro switch is only triggered after the locking element is fully locked. The machine only starts when the main switch and the switch protection device are triggered together, greatly enhancing safety and preventing the machine from starting without locking the telescopic push rod, thus preventing accidental injury to the operator. The locking element is installed on the first push rod and abuts against the second rod when locked. This indicates that even in the retracted state, both the first and second push rods need to be locked and stored. Even with the locking element fully locking the telescopic push rod mechanism, the micro switch can still be triggered in this state, posing a safety hazard during transportation. Utility Model Content

[0003] The purpose of this invention is to provide an adjustment push rod assembly for garden tools that is simple in structure, easy to adjust, and has good reliability.

[0004] The basic technical solution for achieving the purpose of this utility model is: an adjusting push rod assembly for garden tools, including a fixed rod, a telescopic rod, a push rod, and a starting handle. There are two fixed rods, each fixedly mounted on the left and right sides of the corresponding garden tool body. There are also two telescopic rods. The push rod is fixedly mounted on the rear end of each of the two telescopic rods, and the starting handle is mounted on the push rod. Its structural features include a locking device and a safety starting device. There are two locking devices, each fixedly mounted on the rear end of a corresponding fixed rod. The two telescopic rods are slidably mounted on a corresponding locking device, with their front ends extending into the fixed rod. The locking devices securely connect the telescopic rods to the corresponding fixed rods. One of the telescopic rods has a mounting groove on its inner front side. The safety starting device uses a Hall effect switch and a magnet. The magnet is mounted in the mounting groove of the telescopic rod, and the Hall effect switch is mounted in the locking device of the telescopic rod where the magnet is located.

[0005] Furthermore, to improve the speed and reliability of telescopic movement, anti-slip rings are also included. There are two anti-slip rings, each fixedly installed on the end of a corresponding telescopic rod, and the anti-slip rings are located in the fixed rod.

[0006] Furthermore, for ease of telescopic adjustment: the locking device includes a housing, a locking handle, and a clamping block. The housing consists of a lower housing and an upper housing. The upper housing is fixed to the lower housing. The lower housing has a clamping block hole extending through it. The clamping block slides radially within the clamping block hole along the telescopic rod. The locking handle has a cam portion on its lower side, and the locking handle is rotatably mounted on the lower housing by its cam portion, with its rotation axis parallel to the axis of the telescopic rod. The cam portion presses against the clamping block from below. The upper housing has a protruding snap-fit ​​portion on its upper side. The end of the locking handle away from the cam portion has an inwardly protruding latching portion. The latching portion of the locking handle engages with the snap-fit ​​portion of the upper housing to form a snap-fit ​​fixed connection.

[0007] Furthermore, for reliable fixation: the inner side of the lower housing has an upwardly protruding lower limit post, and the fixing rod has a corresponding lower limit hole. The inner side of the upper housing has a downwardly protruding upper limit post, and the fixing rod has a corresponding upper limit hole. The upper housing is fixed to the lower housing, with the lower limit post of the lower housing inserted into the lower limit hole of the fixing rod, and the upper limit post of the upper housing inserted into the upper limit hole of the fixing rod.

[0008] The present invention has the following advantages: (1) The adjustment push rod assembly of the garden tool of the present invention has a simple structure and is easy to adjust. The Hall switch and magnet are used to determine whether the adjustment is in place, which has good reliability. (2) The telescopic rod of the adjustment push rod assembly of the garden tool of the present invention is provided with an anti-disengagement ring, which makes it easy to directly pull the telescopic rod outward to the place without worrying about disengagement. (3) The locking device of the adjustment push rod assembly of the garden tool of the present invention is easy to adjust and has good reliability. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the adjusting push rod assembly of this utility model.

[0010] Figure 2 Figure 1 A diagram showing the view from the right.

[0011] Figure 3 From Figure 1 A diagram showing the view from the upper right front.

[0012] Figure 4 This is a schematic diagram of the locking mechanism.

[0013] Figure 5 for Figure 4 Schematic diagram of cross section AA.

[0014] Figure 6 This is a schematic diagram of the lower housing of the locking device.

[0015] Figure 7 This is a diagram illustrating the installation of the security components.

[0016] Figure 8 Schematic diagram of the adjusting rod

[0017] The labels in the attached diagram are:

[0018] Fixed rod 1,

[0019] Telescopic pole 2,

[0020] Putter 3,

[0021] Start grip 4,

[0022] Locking device 5, lower housing 5-1, lower limit post 5-11, clamping block hole 5-12, upper housing 5-2, locking handle 5-3, clamping block 5-4.

[0023] Safety start device 6, Hall switch 6-1, magnet 6-2,

[0024] Anti-slip ring 7. Detailed Implementation

[0025] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. The description of the orientation of this utility model is as follows: Figure 1 Proceeding in the indicated direction, that is Figure 1 The up, down, left, and right directions shown are the same as the directions described. Figure 1 The direction one faces is the front, and the direction one turns away from is the back. Figure 1The side to the left is the rear. The terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model or simplifying the description, rather than indicating a specific orientation that must be present.

[0026] (Example 1)

[0027] See Figures 1 to 8 The garden tool adjustment push rod assembly of this utility model includes a fixed rod 1, a telescopic rod 2, a push rod 3, a starting grip 4, a locking device 5, a safety starting device 6, and an anti-detachment ring 7.

[0028] See Figures 1 to 3 and Figure 7 There are two fixed rods 1, which are fixedly installed on the left and right sides of the corresponding garden tool body. There are two telescopic rods 2. There are two anti-detachment rings 7, which are fixedly installed on the end of the corresponding telescopic rod 2 and slidably installed in the fixed rod 1. There are two locking devices 5, which are fixedly installed on the rear end of the corresponding fixed rod 1. The two telescopic rods 2 are slidably installed on the corresponding locking device 5, and their front parts extend into the fixed rod 1. The push rod 3 is fixedly installed on the rear end of the two telescopic rods 2. The push rod 3 is equipped with a corresponding control device, which is equipped with a master start switch. The start handle 4 is installed on the push rod 3. The start handle 4 controls the control device to start the equipment. When working, the start handle 4 and the push rod 3 are held at the same time to push the garden tool to move. The control device and the start handle 4 adopt existing technology. One of the telescopic rods 2 has a mounting groove 2-1 on the inner front part. The safety start device 6 adopts a Hall switch 6-1 and a magnet 6-2. Magnet 6-2 is installed in the mounting groove 2-1 of the telescopic rod 2, and Hall switch 6-1 is installed in the locking device 5 of the telescopic rod 2 where magnet 6-2 is located. In use, Hall switch 6-1 cooperates with magnet 6-2; that is, when the telescopic rod 2 is pulled back to the working position, Hall switch 6-1 senses the magnetic field of magnet 6-2 and activates, allowing the equipment to enter the working state. Otherwise, the equipment cannot be started. Hall switch 6-1 is electrically connected to the control device in push rod 3 through corresponding wiring.

[0029] See Figures 1 to 7The locking device 5 includes a housing, a locking handle 5-3, and a clamping block 5-4. The housing consists of a lower housing 5-1 and an upper housing 5-2. The upper housing 5-2 is fixed to the lower housing 5-1. The lower housing 5-1 has an upwardly protruding lower limit post 5-11 on its inner side, and the fixing rod 1 has a corresponding lower limit hole. The upper housing 5-2 has a downwardly protruding upper limit post on its inner side, and the fixing rod 1 has a corresponding upper limit hole. The upper housing 5-2 is fixed to the lower housing 5-1, and the upper housing 5-2 and the lower housing 5-1 are clamped and fixed to the fixing rod 1. The lower limit post 5-11 of the lower housing 5-1 is inserted into the lower limit hole of the fixing rod 1, and the upper limit post of the upper housing 5-2 is inserted into the upper limit hole of the fixing rod 1, thereby forming a reliable axial and circumferential limiting and fixing connection between the housing and the fixing rod 1. The lower housing 5-1 has a clamping block hole 5-12 that penetrates its inner and outer sides. The clamping block 5-4 is made of nylon or rubber. The clamping block 5-4 is slidably disposed in the clamping block hole 5-12 along the radial direction of the telescopic rod 2. A cam portion 5-31 is provided on the lower side of the locking handle 5-3. The locking handle 5-3 is rotatably mounted on the lower housing 5-1 by its cam portion 5-31, with its rotation axis parallel to the axis of the telescopic rod 2. The cam portion 5-31 presses against the clamping block 5-4 from below, driving the clamping block 5-4 to move radially towards the telescopic rod 2. The clamping block 5-4 moves radially away from the telescopic rod 2 under its own weight. The clamping block 5-4 presses the corresponding parts of the telescopic rod 2, thus forming a fixed connection between the locking device 5 and the telescopic rod 2. A protruding latching portion 5-21 is provided on the upper side of the upper housing 5-2. An inwardly protruding buckle portion 5-32 is provided at the end of the locking handle 5-3 away from the cam portion 5-31. The latching part 5-32 of the locking handle 5-3 cooperates with the latching part 5-21 of the upper housing 5-2 to form a latching and fixed connection. When unlocking, the latching part 5-32 is pulled forcefully to disengage it from the latching part 5-21, thereby flipping the locking handle 5-3 downward. The pressing block 5-4 moves radially away from the telescopic rod 2 by its own weight, and the telescopic rod 2 can be slidably telescopically adjusted.

[0030] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjusting push rod assembly for a garden tool, comprising a fixed rod (1), a telescopic rod (2), a push rod (3), and a starting grip (4); there are two fixed rods (1), which are respectively fixedly mounted on the left and right sides of the corresponding garden tool body; there are two telescopic rods (2); the push rod (3) is fixedly mounted on the rear end of the two telescopic rods (2), and the starting grip (4) is mounted on the push rod (3), characterized in that: It also includes a locking device (5) and a safety start device (6); there are two locking devices (5), which are fixedly mounted on the rear end of a corresponding fixed rod (1); two telescopic rods (2) are slidably mounted on a corresponding locking device (5), with their front ends extending into the fixed rod (1); the telescopic rods (2) are fixedly connected to the corresponding fixed rods (1) through the locking devices (5); one of the telescopic rods (2) has an installation groove (2-1) on the inner side of its front end; the safety start device (6) uses a Hall switch (6-1) and a magnet (6-2); the magnet (6-2) is mounted in the installation groove (2-1) of the telescopic rod (2), and the Hall switch (6-1) is mounted in the locking device (5) of the telescopic rod (2) where the magnet (6-2) is located.

2. The garden implement adjustment push rod assembly of claim 1, wherein: It also includes anti-detachment rings (7); there are two anti-detachment rings (7), and the two anti-detachment rings (7) are respectively fixedly installed on the end of the corresponding telescopic rod (2), and the anti-detachment rings (7) are located in the fixed rod (1).

3. The garden implement adjustment push rod assembly of claim 1, wherein: The locking device (5) includes a housing, a locking handle (5-3), and a pressing block (5-4); the housing consists of a lower housing (5-1) and an upper housing (5-2); the upper housing (5-2) is fixed on the lower housing (5-1); the lower housing (5-1) is provided with a pressing block hole (5-12) that penetrates through its interior and exterior; the pressing block (5-4) is slidably disposed in the pressing block hole (5-12) along the radial direction of the telescopic rod (2); the locking handle (5-3) is provided with a cam part (5-31) on its lower side, and the locking handle (5-3) is secured by its cam part (5-31). -31) Rotary mounting on the lower housing (5-1), its rotation axis is parallel to the axis of the telescopic rod (2), the cam part (5-31) pushes against the pressing block (5-4) from below; the upper side of the upper housing (5-2) is provided with a protruding snap-fit ​​part (5-21); the locking handle (5-3) is provided with an inwardly protruding buckle part (5-32) at one end away from the cam part (5-31); the buckle part (5-32) of the locking handle (5-3) and the snap-fit ​​part (5-21) of the upper housing (5-2) cooperate to form a snap-fit ​​fixed connection.

4. The garden implement adjustment push rod assembly of claim 3, wherein: The lower housing (5-1) has an upwardly protruding lower limit post (5-11) on its inner side, and the fixing rod (1) has a corresponding lower limit hole; the upper housing (5-2) has a downwardly protruding upper limit post on its inner side, and the fixing rod (1) has a corresponding upper limit hole; the upper housing (5-2) is fixed on the lower housing (5-1), the lower limit post (5-11) of the lower housing (5-1) is inserted into the lower limit hole of the fixing rod (1), and the upper limit post of the upper housing (5-2) is inserted into the upper limit hole of the fixing rod (1).

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