Detachable pruning blade

Abstract

The utility model discloses a detachable trimming blade which comprises a blade body, sawteeth are arranged on the side of the blade body at intervals in the length direction, a notch used for connection is formed in the middle of the side of the blade body, a connecting end is arranged on the notch in an inward and outward protruding mode, and a connecting groove used for clamping is formed in the connecting end. The design of the notch aims to reduce the influence of the shell during reciprocating motion, the connecting groove at the connecting end facilitates subsequent butt joint with other mechanisms (connecting plates), and mounting and dismounting are convenient.

Description

Detachable trimmer blade Technical Field

[0001] This utility model relates to the field of cutting tool device technology, specifically to a detachable trimming blade. Background Technology

[0002] In trimming-type weed cutters or brush cutters, the blades generally consist of a body and a connecting plate integrally formed with the body. The sides of the body are formed with serrations, and the blades are connected to the eccentric transmission mechanism during weeding through the connecting plate. When the blade serrations or other parts are damaged, the connection between the connecting plate and the eccentric transmission mechanism must be removed before replacement or repair can be performed. This operation is inconvenient and needs improvement. Summary of the Invention

[0003] To address at least one of the aforementioned technical deficiencies, this utility model provides the following technical solution:

[0004] This application discloses a detachable trimmer blade, including a blade body, with serrations spaced along the length of the side of the body, a notch for connection at the middle of the side of the body, and a connecting end protruding inside and outside the notch, and a connecting groove for snap-fit ​​on the connecting end.

[0005] The blade configuration in this design incorporates a notch to reduce the impact of the housing during reciprocating movement. The connecting groove at the connection end facilitates subsequent docking with other mechanisms (connecting plates), making installation and disassembly convenient.

[0006] Furthermore, it also includes a connecting plate, which is provided with a groove for inserting the eccentric drive block. The end of the connecting plate is provided with a locking block that engages with the connecting groove of the corresponding blade body for connection. The connecting plate facilitates docking with the eccentric transmission mechanism, and the locking structure between the connecting plate and the blade body facilitates subsequent disassembly and maintenance.

[0007] Furthermore, the locking block includes a connector and a connected protrusion. The length of the protrusion is greater than the width of the inlet. After the locking block mates with the connecting groove, the protrusion is located in a recessed cavity on the top or bottom surface of the connecting end. The connector extends out from the peripheral wall of the cavity, forming an inlet that communicates with the outside. The width of the inlet is less than the length of the cavity. After the locking block mates with the connecting groove, the protrusion is located in the cavity and the connector extends out from the inlet. The locking of the locking block with the connecting groove with the defined configuration helps to improve the stability of the connection, while also facilitating disassembly, maintenance, and replacement.

[0008] Furthermore, multiple waist holes are formed at intervals along the length direction at the middle of the top surface of the body. The waist holes extend along the length direction of the body. When the blade is installed, fasteners such as bolts can pass through the waist holes, so as not to affect the reciprocating motion of the blade.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. The blade design of this utility model facilitates subsequent disassembly, maintenance and other operations, and is easy to use. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 is a schematic diagram of the blade in Embodiment 1;

[0013] Figure 2 is a schematic diagram of the docking structure of the connecting plates;

[0014] The attached figures are labeled as follows:

[0015] 1. Blade; 2. Drive block; 10. Body; 11. Saw teeth; 12. Notch; 13. Connecting end; 14. Connecting groove; 15. Waist hole; 16. Connecting plate; 141. Groove; 142. Inlet; 161. Protrusion; 162. Connector; 163. Groove. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1

[0018] As shown in Figures 1 and 2, the detachable trimmer blade in this example includes a blade body 10, which is a common plate shape. The sides of the body 10 are spaced with serrations 11, which are common triangular shapes. The middle of the side of the body 10 is recessed to form a notch 12 for connection, and the side of the body 10 within the notch 12 is convex to form a plate-shaped connecting end 13. The connecting end 13 is formed with a connecting groove 14 for snapping. In use, it is snapped and fixed with the connecting plate through the connecting groove, and then connected to the eccentric transmission mechanism in the trimmer and weeder through the connecting plate.

[0019] For ease of connection, the preferred configuration of the connecting groove 14 in this example is shown in Figure 1. Specifically, the connecting groove 14 includes a cavity 141 recessed in the top or bottom surface of the connecting end 13. For example, in this example, a through hole is formed longitudinally in the connecting end 13, with the through hole serving as the cavity 141. An inlet 142 communicating with the outside is formed at the peripheral wall of the cavity 141 relative to the blade body 10. The width of the inlet 142 is less than the length of the cavity 141.

[0020] For the connecting plate, a locking block is formed by protruding at the end of the connecting plate 16. The locking block is inserted into the connecting groove 14 of the corresponding blade body for connection, as shown in Figure 2. The locking block includes a connector 162 and a connecting protrusion 161. The two are generally T-shaped. The length of the protrusion 161 is greater than the width of the inlet 142, as shown in Figure 2. When the locking block is inserted into the connecting groove 14, the protrusion 161 is embedded in the groove cavity 141 and the connector 162 extends out from the inlet. The protrusion helps to restrict disengagement. This locking assembly structure facilitates the subsequent replacement of the blade body, etc.

[0021] To facilitate the connection between the connecting plate and the drive block in the eccentric transmission mechanism, as shown in Figure 2, a groove for the eccentric drive block is formed on the connecting plate 2. The drive block 2 is placed in the groove 163 and is eccentrically connected to the gear shaft of the transmission gear. During the rotation, the drive block drives the connecting plate to swing left and right, and simultaneously causes the blade body to reciprocate left and right.

[0022] To facilitate the installation of the blade body, in this example, multiple waist holes 15 are formed at intervals along the length direction at the middle of the top surface of the blade body 10. The waist holes 15 extend along the length direction of the body 10. When the blade is installed, fasteners such as bolts can pass through the waist holes, thus not affecting the reciprocating motion of the blade.

[0023] When the blade body needs to be replaced, it can be disassembled directly without the need for a connecting plate that connects the disassembly to the eccentric transmission mechanism, which facilitates subsequent maintenance and replacement.

[0024] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A detachable trimming blade, comprising a blade body (10), wherein serrations (11) are spaced along the length direction on the sides of the body (10), characterized in that, The body (10) has a notch (12) for connection at the middle of its side, and the notch (12) has a connecting end (13) protruding inside and outside. The connecting end (13) has a connecting groove (14) for snap-fit.

2. The detachable trimming blade as described in claim 1, characterized in that: It also includes a connecting plate (16), which is provided with a groove (163) for inserting an eccentric drive block. The end of the connecting plate (16) is provided with a locking block, which is inserted into the connecting groove (14) of the corresponding blade body for connection.

3. The detachable trimming blade as described in claim 2, characterized in that: The card block includes a connector and a connected protrusion. The length of the protrusion is greater than the width of the inlet. After the card block is connected to the connecting groove, the protrusion is in a groove cavity recessed on the top or bottom surface of the connecting end. The connector extends out from the periphery of the groove cavity (141) through an inlet (142) that communicates with the outside. The width of the inlet (142) is less than the length of the groove cavity (141).

4. The detachable trimming blade as described in claim 1, characterized in that: Along the length direction, a plurality of waist holes (15) are formed at intervals along the length direction at the middle of the top surface of the body (10), and the waist holes (15) extend along the length direction of the body (10).

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