Locking mechanism and gardening tool

Abstract

The locking mechanism comprises a connector and a locking assembly, and one end of the connector is provided with a rigid pipe connecting cavity matched with a rigid pipe so as to contain the end of the rigid pipe; the locking assembly is provided with at least one rotary knob shaft pin. The connector and the rigid pipe are provided with a first shaft pin hole and a second shaft pin hole respectively, wherein the first shaft pin hole and the second shaft pin hole are matched with the rotary knob shaft pin. The locking assembly is provided with a locking piece, the locking piece is provided with a locking position and an unlocking position, when the locking piece is located at the locking position, the rotary knob shaft pin penetrates through the first shaft pin hole and is inserted into the second shaft pin hole so that the rigid pipe can be axially fixed, and the length of the rotary knob shaft pin is smaller than or equal to the diameter of the rigid pipe. The locking device is simple in structure and convenient to lock and unlock.

Description

Technical Field

[0001] The present invention relates to the technical field of gardening tools, and particularly to a locking mechanism and a gardening tool. Background Art

[0002] In gardening tools with pipes, it is often necessary to connect the handle part and the working head together through a rod, such as a grass cutting head, a high branch saw head, a high branch pruning head, a soil loosening head, a lawn raking head, a brush cutter head, etc. A reliable connection and locking structure is required between the rod and the working head. Common existing connection methods include locking by threads or by a hoop. However, the thread locking method requires the user to tighten the threads, and the operation is relatively cumbersome. The hoop locking method also requires tightening a knob or a locking block clamp to achieve, and the operation is troublesome.

[0003] Therefore, it is necessary to design a locking mechanism with simple operation and structure. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a locking mechanism and a gardening tool with simple structure and convenient locking and unlocking operations.

[0005] To solve the above technical problem, a first aspect of the present invention provides a locking mechanism for connecting a gardening tool head and a rigid pipe, which is fixedly connected to the gardening tool head and is characterized by comprising:

[0006] A connecting head, one end of which is provided with a rigid pipe connection cavity adapted to the rigid pipe to accommodate the end of the rigid pipe;

[0007] A locking assembly, the locking assembly is provided with at least one knob pin, and the connecting head and the rigid pipe are respectively provided with a first pin hole and a second pin hole adapted to the knob pin;

[0008] The locking assembly has a locking member, the locking member has a locking position and an unlocking position. When the locking member is in the locking position, the knob pin passes through the first pin hole and is inserted into the second pin hole to axially fix the rigid pipe, and the length of the knob pin is less than or equal to the diameter of the rigid pipe.

[0009] Optionally, the locking member includes a knob and a knob lock, and the outer wall of the connecting head extends away from the rigid pipe connection cavity to form a first baffle and a second baffle to form a receiving groove for receiving the knob and the knob lock. One end of the knob is pivotally connected to the first baffle and the second baffle to enable the locking member to be switched between the locking position and the unlocking position,

[0010] The knob is provided with a convex block, and an elastic member is connected to the end of the convex block away from the knob;

[0011] The knob latch is provided with a chamber for accommodating the bump and the elastic member. When the knob latch is driven to squeeze the elastic member, the knob latch moves along the length direction of the knob.

[0012] Optionally, a guide rod protrudes from the outer wall of the bump. A strip-shaped hole extending along the moving direction of the knob latch is provided corresponding to the knob latch. The guide rod moves in the strip-shaped hole to limit the knob latch in the length direction of the knob.

[0013] Optionally, at least one of the first baffle and the second baffle is provided with a limiting groove, and the limiting groove extends to the top on the first baffle and / or the second baffle to form an opening;

[0014] Correspondingly, at least one side of the knob latch is provided with a limiting member, and the limiting member is clamped in the limiting groove.

[0015] Optionally, the limiting member is a guide post, and an inclined surface is provided at the opening to guide the guide post into the limiting groove.

[0016] Optionally, a hook is provided at the bottom of the knob latch, and a hook groove adapted to the hook is provided on the outer wall of the corresponding connector head. When locked, it is limited in the pivoting direction of the knob; when the locking member is in the unlocked position, the hook disengages from the hook groove, and the locking member can pivot relative to the hook groove.

[0017] Optionally, a rotating shaft is provided at one end of the knob that pivots with the first baffle and the second baffle. A relief hole is formed in the pipe wall of the connector head to make the rotating shaft contact the outer wall of the rigid pipe; a first guiding surface and a second guiding surface are provided on the rotating shaft;

[0018] When the locking member is in the unlocked position, the first guiding surface protrudes from the inner wall of the rigid pipe connection cavity but has a gap with the outer wall of the rigid pipe; when the locking member is in the locked position, the second guiding surface is in frictional contact with the outer wall of the rigid pipe.

[0019] Optionally, the rigid pipe is a hollow column, and at least one group of anti-fooling protrusions is provided on the outer wall of the rigid pipe;

[0020] Correspondingly, an anti-fooling sliding groove adapted to the anti-fooling protrusion is provided on the inner wall of the rigid pipe connection cavity.

[0021] Correspondingly, a second aspect of the present invention further provides a garden tool, including the connection locking mechanism described in the first aspect, the handle assembly of the rigid pipe described in the first aspect, and a garden tool head;

[0022] The other end of the connector is provided with a gardening tool head connection cavity, and the gardening tool head connection cavity is communicated with the rigid pipe connection cavity; the gardening tool head can be axially inserted into the gardening tool head connection cavity from the opening of the gardening tool head connection cavity and connected with the rigid pipe in the rigid pipe connection cavity; or the gardening tool head is integrally formed with the connector.

[0023] Implementing the present invention has the following beneficial effects:

[0024] The present invention discloses a locking mechanism and a gardening tool. The locking mechanism includes a connector and a locking assembly. One end of the connector is provided with a rigid pipe connection cavity adapted to a rigid pipe to accommodate the end of the rigid pipe; the locking assembly is provided with at least one knob axle pin, and the connector and the rigid pipe are respectively provided with a first axle pin hole and a second axle pin hole adapted to the knob axle pin; the locking assembly has a locking member, and the locking member has a locking position and an unlocking position. When the locking member is in the locking position, the knob axle pin passes through the first axle pin hole and is inserted into the second axle pin hole to axially fix the rigid pipe. The locking mechanism has a simple structure and is convenient for locking and unlocking operations.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Brief Description of the Drawings

[0026] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application, and do not constitute an improper limitation of this application.

[0027] Figure 1 is a schematic diagram of the unlocking state of the locking mechanism in an embodiment of the present invention;

[0028] Figure 2 is Figure 1 a cross-sectional view of

[0029] Figure 3 is a schematic diagram of the locking state of the locking mechanism in an embodiment of the present invention;

[0030] Figure 4 is Figure 3 a cross-sectional view of an embodiment of

[0031] Figure 5 is Figure 3 a cross-sectional view of another embodiment of

[0032] Figure 6 is a schematic diagram of the structure of the locking assembly in an embodiment of the present invention;

[0033] Figure 7 is a schematic diagram of the structure of the connector in an embodiment of the present invention;

[0034] Figure 8 It is a schematic structural diagram of the rigid pipe in the embodiment of the present invention;

[0035] Figure 9 It is a schematic structural diagram of the connection between the connector and the rigid pipe in the embodiment of the present invention;

[0036] Figure 10 is Figure 9 a partial enlarged schematic diagram at position A in;

[0037] Figure 11 It is a schematic structural diagram of the connection between the connector and the working head in the embodiment of the present invention.

[0038] Reference numerals in the figure:

[0039] 100 - Connector; 101 - Rigid pipe connection cavity; 111 - Anti - misalignment chute; 102 - First connecting plate; 103 - Second connecting plate; 104 - Screw; 105 - First pin hole; 106 - Notch; 107 - Gardening tool head connection cavity; 108 - Relief hole;

[0040] 200 - Locking assembly; 201 - First baffle; 211 - Limit groove; 212 - Inclined surface; 202 - Second baffle; 203 - Knob; 213 - Protrusion; 2131 - Guide rod; 223 - Elastic member; 233 - Knob pin; 243 - Rotating shaft; 2431 - First guiding surface; 2432 - Second guiding surface; 204 - Knob lock; 214 - Driving inclined surface; 224 - Slot; 234 - Limiting member; 2341 - Hook; 2342 - Hook groove; 205 - Arc plate;

[0041] 300 - Rigid pipe; 301 - Second pin hole. Detailed implementation manners

[0042] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0045] In the prior art, when the rigid tube 300 is inserted into the cavity of the connector 100, generally, thread locking or hoop locking is used for locking. However, the thread locking method requires the user to tighten the thread, and the operation is relatively cumbersome. The hoop locking method also needs to tighten the knob or clamp the locking block to achieve, and the operation is troublesome.

[0046] Therefore, this embodiment discloses a locking mechanism for connecting and locking a garden tool head and a rigid tube 300, which is easy to operate and convenient to lock and unlock.

[0047] Specifically:

[0048] Referring to Figures 1 - 11 As shown, the locking mechanism includes a connector 100 and a locking assembly 200; wherein, one end of the connector 100 is provided with a rigid tube connection cavity 101 adapted to the rigid tube 300 to accommodate the end of the rigid tube 300; the locking assembly 200 is provided with a knob pin 233, and the connector 100 and the rigid tube 300 are respectively provided with a first pin hole 105 and a second pin hole 301 adapted to the knob pin 233.

[0049] Of course, two, three or more knob pins 233 can also be provided. Correspondingly, the connector 100 and the rigid tube 300 are respectively provided with two, three or more first pin holes 105 and second pin holes 301 adapted to the knob pin 233 to enhance the stability of the rigid tube 300 in the locking mechanism.

[0050] Optionally, referring to Figure 1 As shown, the connector 100 includes a first connecting plate 102 and a second connecting plate 103. The first connecting plate 102 and the second connecting plate 103 are symmetrically arranged and form a rigid tube connection cavity 101. The first connecting plate 102 and the second connecting plate 103 are connected and fixed by at least one screw 104, which is convenient for later maintenance and disassembly.

[0051] Among them, the locking assembly 200 has a locking member, and the locking member has a locking position and an unlocking position. When the locking member is in the locking position, the knob pin 233 passes through the first pin hole 105 and is inserted into the second pin hole 301 to axially fix the rigid tube 300; when the locking member is in the unlocking position, the knob pin 233 is located outside the first pin hole 105 and the second pin hole 301.

[0052] The length of the knob shaft pin 233 is less than or equal to the diameter of the rigid tube 300, avoiding the situation that the knob shaft pin 233 is too long and cannot be accommodated in the rigid tube 300 after passing through the second shaft pin hole 301.

[0053] In a possible implementation manner, referring to Figure 1 and Figure 6 As shown, the locking member includes a knob 203 and a knob lock 204. The outer wall of the connector 100 extends away from the rigid tube connection cavity 101 to form a first baffle 201 and a second baffle 202, so as to form a receiving groove for receiving the knob 203 and the knob lock 204. One end of the knob 203 is pivotally connected to the first baffle 201 and the second baffle 202, so that the locking member can be switched between a locking position and an unlocking position.

[0054] Optionally, in order to ensure the structural strength and stability of the locking assembly 200 on the connector 100, the first baffle 201 and the second baffle 202 are integrally formed with the connector 100 respectively.

[0055] In addition, the knob 203 is provided with a convex block 213, and an elastic member 223 is connected to the end of the convex block 213 away from the knob 203. Correspondingly, the knob lock 204 is provided with a cavity for receiving the convex block 213 and the elastic member 223. When the knob lock 204 is driven to squeeze the elastic member 223, the knob lock 204 moves along the length direction of the knob 203.

[0056] When the knob lock 204 is squeezed, in order to prevent the knob lock 204 from colliding or disengaging from the convex block 213 and the elastic member 223, in a possible implementation manner, a guide rod 2131 is protrudingly provided on the outer wall of the convex block 213, and a strip-shaped hole 224 extending along the moving direction of the knob lock 204 is provided corresponding to the knob lock 204. The guide rod 2131 moves in the strip-shaped hole 224 to limit the knob lock 204 in the length direction of the knob 203.

[0057] In a possible implementation manner, at least one of the first baffle 201 and the second baffle 202 is provided with a limiting groove 211, and the limiting groove 211 extends to the top on the first baffle 201 and / or the second baffle 202 to form an opening; at least one side of the knob lock 204 is provided with a limiting member 234. By squeezing the elastic member 223 with the knob lock 204, the limiting member 234 on the side of the knob lock 204 is connected in the limiting groove 211, so as to fix the locking member.

[0058] In this embodiment, both the first baffle 201 and the second baffle 202 are provided with a limiting groove 211, and a limiting member 234 is correspondingly provided on the side of the knob lock 204 respectively. Of course, in another embodiment, only one limiting groove 211 can be provided on one side, and one limiting member 234 is correspondingly provided.

[0059] In a possible implementation, with reference to Figure 3 as shown, the limiting member 234 is a guide post. Further, in order to facilitate the guide post to enter the limiting groove 211 for locking, a slope 212 is provided at the opening. The inclination direction of the slope 212 is consistent with the rotation direction of the locking member. Thus, when the locking member rotates from Figure 1 state to Figure 3 state, since the inclination direction of the slope 212 is consistent with the rotation angle of the locking member, the guide post can fall into the limiting groove 211 along the slope 212. The limiting groove 211 has a portion extending away from the said inclination direction. Then, under the elastic action of the elastic member 223, the limiting member 234 moves towards the portion of the limiting groove 211 extending away from the inclination direction. The groove wall of this portion blocks the movement of the limiting member 234 away from the limiting groove 211, so that the limiting member 234 is clamped in the limiting groove 211, thereby quickly locking the locking member.

[0060] In another possible implementation, with reference to Figure 5 as shown, a hook 2341 is provided at the bottom of the knob lock 204, and a hook groove 2342 adapted to the hook 2341 is provided on the outer wall of the corresponding connector 100. When the locking member is in the locking position, the hook 2341 is clamped in the hook groove 2342 to limit the knob lock 204 in the pivoting direction of the knob 203; when the locking member is in the unlocking position, the hook 2341 disengages from the hook groove 2342, and the locking member can pivot relative to the hook groove 2342.

[0061] Specifically, when the locking member is converted from the locking position to the unlocking position, when the knob lock 204 is pressed, the elastic member 223 deforms, causing the knob lock 204 to move a distance towards the knob 203 along its own length direction, so that the hook 2341 moves away from the hook groove 2342. After the knob lock 204 pivots out of the receiving groove along the pivoting direction, the knob lock 204 is released. Then, with the restoring force of the elastic member 223, the knob lock 204 resets and the locking member returns to its original length.

[0062] To facilitate the unlocking of the limiting member 234, a hand-held portion is provided on the knob lock 204. In a possible implementation, with reference to Figure 1 as shown, the second end of the first connecting plate 102 and the second end of the second connecting plate 103 are connected by an arc-shaped plate 205. The arc-shaped plate 205 bends towards the end away from the knob lock 204. Thus, a space is left between the arc-shaped plate 205 and the knob lock 204 for the user's finger to squeeze the knob lock 204.

[0063] Further, with reference to Figure 6As shown, one end of the knob latch 204 close to the arc-shaped plate 205 is provided with a driving inclined surface 214, which increases the contact area between the user and the driving inclined surface 214 and facilitates pressing the knob latch 204. Further, along the direction from the knob latch 204 towards the knob 203, the driving inclined surface 214 forms an acute angle with this direction, so that in the radial direction of the rigid tube, the end of the knob latch 204 close to the arc-shaped plate 205 forms a structure with an outer long and inner short shape. When the finger presses the driving inclined surface 214, its outer long and inner short structure can prevent the finger from sliding out along the driving inclined surface 214. In a possible implementation manner, a rotating shaft 243 is provided at one end of the knob 203 pivotally connected to the first baffle 201 and the second baffle 202, and a relief hole 108 is opened on the pipe wall of the connector 100 so that the rotating shaft 243 contacts the outer wall of the rigid tube 300; please refer to Figure 6 , a first guiding surface 2431 and a second guiding surface 2432 are provided on the rotating shaft 243;

[0064] When the locking member is in the unlocked position, the first guiding surface 2431 protrudes from the inner wall of the rigid tube connection cavity 101 but has a gap with the outer wall of the rigid tube 300; please refer to Figure 9 , when the locking member is in the locked position, the second guiding surface 2432 is in frictional contact with the outer wall of the rigid tube 300.

[0065] That is, as Figures 9 - 10 shown, the first guiding surface 2431 is in interference fit with the rigid tube 300. Specifically, as Figure 10 shown, the depth of the first guiding surface 2431 pre-pressing the rigid tube 300 is a, achieving primary locking and fixing the rigid tube 300 in the rigid tube connection cavity 101. The first guiding surface 2431 can be made of a flexible material. Thus, when the first guiding surface 2431 pre-presses the outer wall of the rigid tube 300, it can reduce the damage to the outer wall of the rigid tube 300 and achieve locking; in addition, through the design of the first guiding surface 2431, the contact area when locking with the rigid tube 300 can be increased, the pre-pressing area is larger, and the locked state is more stable; in addition, when the locking assembly 200 is unlocked, the second guiding surface 2432 is flush with the inner wall of the rigid tube connection cavity 101 or accommodated in the notch 106 in the connector 100, that is, as Figure 2 shown, the second guiding surface 2432 is in clearance fit with the rigid tube 300, and there is a gap between the second guiding surface 2432 and the outer wall of the rigid tube 300, thus facilitating the removal of the rigid tube 300 and achieving unlocking.

[0066] Further, in order to improve the locking effect, the rotating ends between the locking member and the first baffle 201 and the second baffle 202 are arranged at one end of the connector 100 near the rigid pipe connection cavity 101, that is, the rotating shaft 243 can pre-press the rigid pipe 300 at the opening of the rigid pipe connection cavity 101 to achieve locking, which is equivalent to pre-pressing and locking the front section of a section of the rigid pipe 300 extending into the rigid pipe connection cavity 101. Compared with the rotating ends between the locking member and the first baffle 201 and the second baffle 202 being arranged in the middle of the connector 100, at this time, the rotating shaft 243 pre-presses the rear section of the rigid pipe 300 extending into the rigid pipe connection cavity 101, and the locking effect produced by pre-pressing the front section of the rigid pipe 300 extending into the rigid pipe connection cavity 101 is better.

[0067] Optionally, when the rigid pipe 300 is a hollow column, at least one set of anti-fooling protrusions is provided on the outer wall of the rigid pipe 300; correspondingly, as shown in Figure 3 shown, anti-fooling sliding grooves 111 adapted to the anti-fooling protrusions are provided on the inner wall of the rigid pipe connection cavity 101, which can play a guiding role. For example, when the rigid pipe 300 is locked by the knob shaft pin 233, through the cooperation of the anti-fooling sliding grooves 111 and the anti-fooling protrusions, the knob shaft pin 233 can accurately align with the first pin hole 105 and the second pin hole 301.

[0068] This embodiment also provides a gardening tool, including the above-mentioned connection and locking mechanism, the handle assembly of the rigid pipe, and the gardening working head; the other end of the connector 100 is provided with a gardening working head connection cavity 107, and the gardening working head connection cavity 107 communicates with the rigid pipe connection cavity 101; the gardening working head can be axially inserted into the gardening working head connection cavity 107 from the opening of the gardening working head connection cavity 107 and connected to the rigid pipe 300 in the rigid pipe connection cavity 101. Of course, the connector 100 can also be integrally formed with the gardening working head, and the machine body includes the working head, that is, the connector 100 is a part of the machine body, which can further make the overall structure of the machine body more stable.

[0069] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0070] The above-mentioned embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A locking mechanism for connecting and fastening a gardening tool head to a rigid pipe, fixedly connected to the gardening tool head, characterized in that, Comprising: A connector (100), one end of the connector (100) is provided with a rigid pipe connection cavity (101) adapted to the rigid pipe to accommodate the end of the rigid pipe; A locking assembly (200), the locking assembly (200) is provided with at least one knob pin (233), and the connector (100) and the rigid pipe (300) are respectively provided with a first pin hole (105) and a second pin hole (301) adapted to the knob pin (233); The locking assembly (200) has a locking member, the locking member has a locking position and an unlocking position. When the locking member is in the locking position, the knob pin (233) passes through the first pin hole (105) and is inserted into the second pin hole (301) to axially fix the rigid pipe; when the locking member is in the unlocking position, the knob pin (223) is located outside the first pin hole (105) and the second pin hole (301); the length of the knob pin (233) is less than or equal to the diameter of the rigid pipe (300).

2. The connection locking mechanism according to claim 1, wherein The locking member includes a knob (203) and a knob lock (204). The outer wall of the connector (100) extends away from the rigid pipe connection cavity (101) to form a first baffle (201) and a second baffle (202) to form a receiving groove for accommodating the knob (203) and the knob lock (204). One end of the knob (203) is pivotally connected to the first baffle (201) and the second baffle (202) to enable the locking member to be switched between the locking position and the unlocking position. The knob (203) is provided with a protrusion (213), and an elastic member (223) is connected to one end of the protrusion (213) away from the knob (203); The knob lock (204) is provided with a cavity for accommodating the protrusion (213) and the elastic member (223). When the knob lock (204) is driven to squeeze the elastic member (223), the knob lock (204) moves along the length direction of the knob (203).

3. The connection locking mechanism according to claim 2, wherein A guide rod (2131) protrudes from the outer wall of the protrusion (213). Corresponding to the knob lock (204), a strip hole (224) is arranged along the moving direction of the knob lock (204). The guide rod (2131) moves in the strip hole (224) to limit the knob lock (204) in the length direction of the knob (203).

4. The connection locking mechanism according to claim 3, wherein At least one of the first baffle (201) and the second baffle (202) is provided with a limiting groove (211), and the limiting groove (211) extends to the top on the first baffle (201) and / or the second baffle (202) to form an opening; Correspondingly, at least one side of the knob lock (204) is provided with a limiting member (234), and the limiting member (234) is snap-fitted in the limiting groove (211).

5. The connection and locking mechanism according to claim 4, characterized in that the limiting member (234) is a guide post, and an inclined surface (212) is provided at the opening to guide the guide post into the limiting groove (211).

6. The connection and locking mechanism according to claim 5, characterized in that a hook (2341) is provided at the bottom of the knob lock (204), and a hook groove (2342) adapted to the hook (2341) is provided on the outer wall of the connection head (100). When the locking member is in the locking position, the hook (2341) is snap-fitted in the hook groove (2342) to limit the knob lock (204) in the pivoting direction of the knob (203); when the locking member is in the unlocking position, the hook (2341) disengages from the hook groove (2342), and the locking member can pivot relative to the hook groove (2342).

7. The connection and locking mechanism according to claim 6, characterized in that a rotating shaft (243) is provided at one end of the knob (203) that pivots with the first baffle (201) and the second baffle (202). A relief hole (108) is provided in the pipe wall of the connection head (100) to enable the rotating shaft (243) to contact the outer wall of the rigid pipe (300); a first guiding surface (2431) and a second guiding surface (2432) are provided on the rotating shaft (243); when the locking member is in the unlocking position, the first guiding surface (2431) protrudes from the inner wall of the rigid pipe connection cavity (101) but has a gap with the outer wall of the rigid pipe (300); when the locking member is in the locking position, the second guiding surface (2432) is in frictional contact with the outer wall of the rigid pipe (300).

8. The connection and locking mechanism according to claim 1, characterized in that the rigid pipe (300) is hollow cylindrical, and at least one set of anti-fooling protrusions is provided on the outer wall of the rigid pipe (300); Correspondingly, an anti-fooling sliding groove (111) adapted to the anti-fooling protrusions is provided on the inner wall of the rigid pipe connection cavity (101).

9. A gardening tool, characterized in that, A handle assembly and a gardening tool head including the connection and locking mechanism according to any one of claims 1-8 and a rigid pipe according to any one of claims 1-8; the other end of the connection head (100) is provided with a gardening tool head connection cavity (107), and the gardening tool head connection cavity (107) communicates with the rigid pipe connection cavity (101); the gardening tool head can be axially inserted into the gardening tool head connection cavity (107) from the opening of the gardening tool head connection cavity (107) and connected to the rigid pipe (300) in the rigid pipe connection cavity (101); or the gardening tool head is integrally formed with the connection head (100).

Images