Safety lock of mower

Abstract

The utility model discloses a safety lock of a mower, which comprises a holding shell, a middle rod is connected in the holding shell in a penetrating manner, a control handle is rotatably connected onto the holding shell, a safety ring lock is sleeved on the middle rod, the safety ring lock is rotatably connected onto the middle rod, a limiting block is arranged on the safety ring lock, and the control handle is rotatably connected onto the control handle. The limiting block can abut against the control handle. According to the safety lock setting method, the safety lock is connected to the middle rod in a sleeving mode to form the safety ring lock, so that the safety ring lock can rotate around the middle rod, the limiting block is arranged on the safety ring lock, and it can be expected that the limiting block synchronously rotates along with the safety ring lock; and in the rotating process, constraint limiting and separation avoiding of the limiting block on the control handle are achieved, so that on the premise that the middle rod exists, normal action of the safety ring lock can still be guaranteed, and interference generated by the middle rod is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a safety lock for lawn mowers. Background Art

[0002] There are certain risks when using a lawn mower, so a safety locking device is provided on the throttle of the lawn mower to prevent accidental touch by people and provide safety protection for the user.

[0003] For example, the publication number "CN218218355U" discloses "a lawn mower", including an operating arm and a cutting device arranged at the front end of the operating arm, the cutting device including a driving motor and a cutting blade arranged on the driving motor, the driving motor is connected to the cutting blade, the driving motor can drive the cutting blade to rotate, a protective cover is arranged between the driving motor and the cutting blade, a grass scraping piece is arranged on the lower surface of the protective cover, the grass scraping piece extends outward to form a grass scraping surface, and the grass scraping surface is close to the cutting blade. However, in actual applications, this type of operating handle is at the very end of the middle rod, so the setting of the safety lock is relatively flexible. When the grip center of gravity position needs to be adjusted, there will be a situation where the middle rod needs to pass through the part where the safety lock is set, and at this time the middle rod will interfere with the safety lock. Summary of the invention

[0004] In view of the problem in the prior art mentioned in the background technology that the setting of the safety lock cannot adapt to the intermediate rod passing through the grip shell, the utility model provides a safety lock for a lawn mower, which can prevent the intermediate rod from affecting the movement of the safety lock and is more suitable for a lawn mower with the intermediate rod passing through the grip shell.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions.

[0006] A safety lock for a lawn mower includes a grip shell, an intermediate rod is connected through the grip shell, a control handle is rotatably connected to the grip shell, a safety ring lock is sleeved on the intermediate rod, the safety ring lock is rotatably connected to the intermediate rod, and a limit block is arranged on the safety ring lock, and the limit block can abut the control handle. In the present application, since the intermediate rod passes through the grip shell, some parts of the lawn mower are placed at the tail end of the intermediate rod, and the position of the control handle is correspondingly placed in front, so there is interference from the intermediate rod around the control handle. In this case, the method for setting the safety lock adopted in the present application is to sleeve the safety lock on the intermediate rod to form a safety ring lock, so that the safety ring lock can rotate around the intermediate rod, and a limit block is arranged on the safety ring lock. It can be expected that the limit block in the present application rotates synchronously with the safety ring lock, and the limit block can limit and disengage the control handle during the rotation process, so that under the premise of the existence of the intermediate rod, the normal action of the safety ring lock can still be guaranteed to avoid interference from the intermediate rod.

[0007] Preferably, a ring lock opening is provided on the holding housing. The safety ring lock includes a socket ring, and a control board is connected to the socket ring and extends out of the ring lock opening. A ring lock opening is provided on the holding housing. The safety ring lock includes a socket ring which is a part sleeved on the middle rod. A control board is provided on the socket ring. Further, the control board extends out of the ring lock opening, enabling the user to control the safety ring lock outside the holding housing.

[0008] Preferably, a ring lock limiting groove is provided inside the holding housing. The ring lock limiting groove is provided on the side of the safety ring lock away from the limiting block, and a guiding block located in the ring lock limiting groove is provided on the safety ring lock. A ring lock limiting groove is provided inside the holding housing. The ring lock limiting groove can guide and limit the guiding block provided on the safety ring lock, thereby ensuring the rotational stability of the safety ring lock. At the same time, both the ring lock limiting groove and the guiding block are arranged in the upper position, thus making full use of the space.

[0009] Preferably, a ring lock installation groove is provided inside the holding housing. The safety ring lock includes a socket ring which is arranged in the ring lock installation groove. There is a ring lock installation groove inside the holding housing. The ring lock installation groove can limit and install the socket ring, preventing the safety ring lock from moving along the axial direction of the middle rod during use and ensuring the stable position of the safety ring lock.

[0010] Preferably, a top block is provided on the control handle near the safety ring lock, and the top block can abut against the limiting block. A top block is provided on the control handle. The top block is arranged on the side of the control handle near the safety ring lock, and the top block can abut against the limiting block, thereby ensuring the restraint effect on the control handle and reducing the setting size of the limiting block, and thus reducing the interference factors that may occur to the limiting block during the rotation of the safety ring lock.

[0011] Preferably, the limiting block is of a trapezoidal structure. The limiting block includes a wide bottom near the top block side and a narrowing portion away from the top block side. When the safety ring lock moves to a position where the limiting block and the top block are misaligned, the side of the top block is parallel to the side of the limiting block. The shape of the limiting block is set to a trapezoidal structure, so a wide bottom and a narrowing portion are formed on the limiting block, expanding the restraint effect of the limiting block on the control handle. After the safety ring lock rotates, the limiting block shifts to a position corresponding to the top block. At this time, the limiting block is in an inclined state. Since the limiting block itself is of a trapezoidal structure, the side of the limiting block will be parallel to the top block. Thus, during the movement of the top block, the limiting block can provide guiding and limiting functions for the top block.

[0012] Preferably, a hollow groove is provided on the side of the top block. The hollow groove provided on the side of the top block can reduce the frictional resistance during the movement of the top block, thereby ensuring the smoothness of the user pressing the control handle.

[0013] Preferably, the safety ring lock includes a connecting inner ring, and a plurality of positioning protrusions are provided on the connecting inner ring, and the positioning protrusions abut against the middle rod. The positioning protrusions provided in the connecting inner ring can abut against the middle rod, thereby fixing the safety ring lock on the middle rod. Since the structural shape and size of the positioning protrusions are convenient for processing control, the connection stability with the middle rod can be improved, and the processing accuracy requirements can be reduced.

[0014] Preferably, the safety ring lock includes a connecting outer ring, and a limiting block is provided on the connecting outer ring, and the positioning protrusion is arranged corresponding to the position of the limiting block. The position where the positioning protrusion is arranged corresponds to the position where the limiting block is arranged, so that when the limiting block is stressed, the force can be transmitted to the positioning protrusion and then to the middle rod, thereby ensuring the stability of the force and avoiding the force in the area between the two positioning protrusions and causing deformation.

[0015] Preferably, the control handle includes a rotating part, an installation ring groove is provided on the rotating part, and a torsion spring is connected in the installation ring groove. One end of the torsion spring abuts against the control handle, and the other end abuts against the holding housing. The control handle can rotate. Therefore, an installation ring groove is provided on the rotating part, so that during the rotation of the control handle, it can always be subjected to the restoring force provided by the torsion spring, and the control handle can quickly return to its original position after the hand is released.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) It can avoid the influence of the middle rod on the movement of the safety lock, and is more suitable for a lawn mower in which the middle rod penetrates the holding housing;

[0018] (2) The holding housing can ensure the limitation of the safety ring lock, thereby improving the stability of the safety ring lock;

[0019] (3) It can improve the fixing stability of the corresponding control handle and provide a guiding effect during the movement of the control handle; (4) Improve the smoothness of the control handle during the pressing movement. Description of the Drawings

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a partial axonometric drawing of the present invention.

[0022] Figure 3 It is a partial structural schematic diagram of the control handle in the present invention.

[0023] Figure 4 It is a schematic structural diagram of Embodiment 2.

[0024] In the figure:

[0025] 1. Holding housing, 11. Ring lock limit groove, 12. Ring lock installation groove;

[0026] 2. Intermediate rod;

[0027] 3. Control handle, 31. Top block, 311. Hollow groove, 32. Rotating part, 33. Installation ring groove, 34. Torsion spring;

[0028] 4. Safety ring lock, 41. Limit block, 411. Wide bottom, 412. Narrowing part, 42. Socket ring, 43. Control board, 44. Guide block, 45. Connecting inner ring, 451. Positioning protrusion, 46. Connecting outer ring. Specific implementation mode

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Embodiment 1:

[0031] As Figure 1 shown, a safety lock for a lawn mower includes a holding housing 1, an intermediate rod 2 is connected through the holding housing 1, a control handle 3 is rotatably connected to the holding housing 1, a safety ring lock 4 is sleeved on the intermediate rod 2, the safety ring lock 4 is rotatably connected to the intermediate rod 2, and a limit block 41 is provided on the safety ring lock 4, and the limit block 41 can abut against the control handle 3. In this application, since the intermediate rod 2 penetrates the holding housing 1, some components of the lawn mower are placed at the tail end of the intermediate rod 2, and correspondingly, the position of the control handle 3 is advanced. Therefore, there is interference from the intermediate rod 2 around the control handle 3. In this case, the method of setting the safety lock adopted in this application is to sleeve the safety lock on the intermediate rod 2 to form the safety ring lock 4, so that the safety ring lock 4 can rotate around the intermediate rod 2. A limit block 41 is provided on the safety ring lock 4. It can be expected that the limit block 41 in this application rotates synchronously with the safety ring lock 4. During the rotation process, the limit block 41 restricts and disengages from the control handle 3, so that even if there is an intermediate rod 2, the normal operation of the safety ring lock 4 can still be ensured, and interference from the intermediate rod 2 is avoided.

[0032] As Figure 1As shown, a ring lock opening is provided on the holding housing 1. The safety ring lock 4 includes a socket ring 42, and a control board 43 is connected to the socket ring 42. The control board 43 extends out of the ring lock opening. A ring lock opening is provided on the holding housing 1, wherein the safety ring lock 4 includes a socket ring 42. The socket ring 42 is the part sleeved on the middle rod 2. A control board 43 is provided on the socket ring 42. Further, the control board 43 extends out of the ring lock opening, and the user can control the safety ring lock 4 outside the holding housing 1.

[0033] As Figure 2 As shown, a ring lock limiting groove 11 is provided in the holding housing 1. The ring lock limiting groove 11 is provided on the side of the safety ring lock 4 away from the limiting block 41. A guiding block 44 located in the ring lock limiting groove 11 is provided on the safety ring lock 4. A ring lock limiting groove 11 is provided inside the holding housing 1. The ring lock limiting groove 11 can guide and limit the guiding block 44 provided on the safety ring lock 4, so as to ensure the rotational stability of the safety ring lock 4. At the same time, both the ring lock limiting groove 11 and the guiding block 44 are arranged at the upper position, so as to make full use of the space.

[0034] As Figure 2 As shown, a ring lock installation groove 12 is provided in the holding housing 1. The safety ring lock 4 includes a socket ring 42, and the socket ring 42 is arranged in the ring lock installation groove 12. There is a ring lock installation groove 12 in the holding housing 1. The ring lock installation groove 12 can limit and install the socket ring 42, avoiding the movement of the safety ring lock 4 along the axial direction of the middle rod 2 during use, and ensuring the stable position of the safety ring lock 4.

[0035] As Figure 1 As shown, a top block 31 is provided on the side of the control handle 3 close to the safety ring lock 4. The top block 31 can abut against the limiting block 41. A top block 31 is provided on the control handle 3. The top block 31 is arranged on the side of the control handle 3 close to the safety ring lock 4, and the top block 31 can abut against the limiting block 41, so as to ensure the restraint effect on the control handle 3 and reduce the setting size of the limiting block 41, thereby reducing the interference factors generated by the limiting block 41 during the rotation of the safety ring lock 4.

[0036] As Figure 1 As shown, a hollow groove 311 is provided on the side of the top block 31. The hollow groove 311 provided on the side of the top block 31 can reduce the frictional resistance during the movement of the top block 31, thereby ensuring the smoothness of the user pressing the control handle 3.

[0037] As Figure 2As shown, the safety ring lock 4 includes a connecting inner ring 45, and a plurality of positioning protrusions 451 are provided on the connecting inner ring 45. The positioning protrusions 451 abut against the intermediate rod 2. The positioning protrusions 451 provided in the connecting inner ring 45 can abut against the intermediate rod 2, so that the safety ring lock 4 can be fixed on the intermediate rod 2. Since the structural shape and size of the positioning protrusions 451 are convenient for processing control, the connection stability with the intermediate rod 2 can be improved, and the requirement for processing accuracy can be reduced.

[0038] As Figure 2 shown, the safety ring lock 4 includes a connecting outer ring 46, and a limiting block 41 is provided on the connecting outer ring 46. The positioning protrusions 451 are arranged corresponding to the position of the limiting block 41. By corresponding the setting position of the positioning protrusions 451 with the setting position of the limiting block 41, when the limiting block 41 is stressed, the stress can be transmitted to the positioning protrusions 451 and then to the intermediate rod 2, so as to ensure the stability of the stress and avoid stress in the area between the two positioning protrusions 451, causing deformation.

[0039] As Figure 3 shown, the control handle 3 includes a rotating part 32, and an installation ring groove 33 is provided on the rotating part 32. A torsion spring 34 is connected in the installation ring groove 33. One end of the torsion spring 34 abuts against the control handle 3, and the other end abuts against the holding housing 1. The control handle 3 can rotate. Therefore, the installation ring groove 33 is provided on the rotating part 32, so that during the rotation of the control handle 3, it can always receive the restoring force provided by the torsion spring 34, and the control handle 3 can quickly reset after the hand is released.

[0040] In this embodiment, the assembly and working process of the safety lock of the lawn mower are as follows: In this embodiment, it includes a holding housing 1, the inside of the holding housing 1 is a hollow structure, the intermediate rod 2 penetrates through the holding housing 1, in this embodiment, a control handle 3 that can be pressed is provided on the holding housing 1, a safety ring lock 4 is provided on the intermediate rod 2 above the control handle 3, the safety ring lock 4 can rotate around the intermediate rod 2, a limiting block 41 is provided on the safety ring lock 4, the limiting block 41 moves synchronously with the safety ring lock 4, and the setting position of the limiting block 41 corresponds to above the control handle 3.

[0041] Further, in this application, a top block 31 is provided on one side of the control handle 3 close to the safety ring lock 4. The safety ring lock 4 includes a locking position and an unlocking position. When the safety ring lock 4 is in the locking position, the limiting block 41 is aligned with the top block 31. But when each safety ring lock 4 is in the unlocking position, the limiting block 41 rotates with the safety ring lock 4 and is displaced from the top block 31, so that the top block 31 loses the limiting effect above, and the control handle 3 can be pressed and toggled to realize the control output of the lawn mower.

[0042] Further, in the present embodiment, a ring lock opening is provided on the holding housing 1. The ring lock opening is disposed on the side surface of the holding housing 1. A control board 43 is provided on the safety ring lock 4. The control board 43 is disposed on the side surface of the safety ring lock 4, corresponding to the position of the ring lock opening, and the control board 43 extends outwards from the ring lock opening. The user can drive the safety ring lock 4 to rotate by toggling the control board 43 on the outer side of the holding housing 1, thereby driving the corresponding or misaligned setting between the limiting block 41 and the top block 31. The opening size of the ring lock opening limits the movement stroke size of the control board 43, and can give the user feedback information on rotating in place or restoring in place.

[0043] Further, in the present embodiment, a ring lock limiting groove 11 is provided on the holding housing 1. The ring lock limiting groove 11 is disposed at the top position of the holding housing 1. A guiding block 44 is provided at the top of the safety ring lock 4. The guiding block 44 is located inside the ring lock limiting groove 11 and can provide a guiding function during the rotation of the safety ring lock 4 to ensure the rotation stability of the safety ring lock 4. At the same time, a ring lock installation groove 12 is also provided on the holding housing 1. The ring lock installation groove 12 limits the safety ring lock 4 inside the ring lock installation groove 12, which can play a role of limiting and fixing, avoiding the movement of the safety ring lock 4 along the axis direction of the middle rod 2, and ensuring the stability of the safety ring lock 4.

[0044] Further, in the present embodiment, the safety ring lock 4 is divided into a connecting inner ring 45 and a connecting outer ring 46. The connecting inner ring 45 is correspondingly connected to the middle rod 2. A plurality of positioning protrusions 451 are provided on the connecting inner ring 45. The positioning protrusions 451 abut against the middle rod 2, thereby reducing the frictional resistance during the rotation of the safety ring lock 4 and improving the smoothness of rotation. At the same time, the size of the positioning protrusions 451 is convenient to adjust to ensure the connection stability with the middle rod 2.

[0045] During the working process, the safety ring lock 4 is first in the locked position. At this time, the limit block 41 on the safety ring lock 4 is aligned with the top block 31. If the control handle 3 is toggled at this time, the control handle 3 cannot move. It is necessary to toggle the control board 43 to drive the safety ring lock 4 to rotate, so that the limit block 41 is misaligned with the top block 31, causing the top block 31 to lose the limit constraint in the upward movement direction and enabling normal operation. Subsequently, when the work is completed, without pressing the control handle 3, the control handle 3 can recover under the restoring force of the torsion spring 34. At this time, the position above the top block 31 is vacated. By toggling the control board 43, the safety ring lock 4 is driven to rotate, so that the limit block 41 abuts against the top block 31, and thus the control handle 3 can be limited and constrained again. Through the above technical solutions in this embodiment, the following technical effects can be achieved: it can avoid the influence of the intermediate rod on the movement of the safety lock, and is more suitable for a lawn mower with an intermediate rod passing through the holding housing; the holding housing can ensure the limitation of the safety ring lock, thereby improving the stability of the safety ring lock; it can improve the fixing stability of the corresponding control handle and provide a guiding effect during the movement of the control handle; it can improve the smoothness of the control handle during the pressing movement.

[0046] Embodiment 2:

[0047] As Figure 4 shown, different from Embodiment 1, in this embodiment, 6. The limit block 41 is of a trapezoidal structure. The limit block 41 includes a wide bottom portion 411 on the side close to the top block 31, and the limit block 41 includes a narrowing portion 412 on the side away from the top block 31. When the safety ring lock 4 moves to the position where the limit block 41 is misaligned with the top block 31, the side of the top block 31 is parallel to the side of the limit block 41. By setting the shape of the limit block 41 to a trapezoidal structure, a wide bottom portion 411 and a narrowing portion 412 are formed on the limit block 41, expanding the constraint effect of the limit block 41 on the control handle 3. And after the safety ring lock 4 rotates, the limit block 41 is offset from the corresponding position of the top block 31. At this time, the limit block 41 is in an inclined state. Since the limit block 41 itself is of a trapezoidal structure, the side surface of the limit block 41 will be parallel to the top block 31. Thus, during the movement of the top block 31, the limit block 41 can provide a guiding and limiting effect on the top block 31.

[0048] During the working process, the safety ring lock 4 is first in the locked position. At this time, the limit block 41 on the safety ring lock 4 is aligned with the top block 31. If the control handle 3 is toggled at this time, the control handle 3 cannot move. It is necessary to toggle the control board 43 to drive the safety ring lock 4 to rotate. Since the limit block 41 is trapezoidal in structure, during the rotation process, the limit block 41 can only be completely misaligned with the top block 31 after rotating in place. If the limit block does not rotate in place, there will be some areas on the wide bottom of the limit block above the top block. At this time, when the control handle moves upward, it will drive the top block to abut against the limit block. Since the ground of the limit block is inclined at this time, the top block will squeeze the limit block and slide along the inclined bottom surface, so that the limit block is restored to its initial position, and the safety ring lock is again in the locked position. Therefore, in this embodiment, the safety ring lock must be rotated in place so that the limit block and the top block are completely misaligned. At this time, the side of the limit block 41 is parallel to the side of the top block 31, so that the top block 31 loses the limit constraint in the upward movement direction and can work normally. Subsequently, when the work is completed, without pressing the control handle 3, the control handle 3 can be restored under the restoring force of the torsion spring 34. At this time, the position above the top block 31 is vacated. By toggling the control board 43, the safety ring lock 4 is driven to rotate so that the limit block 41 abuts against the top block 31, and then the control handle 3 can be limited and constrained again.

Claims

1. A safety lock for a lawn mower, characterized in that, It includes a holding housing (1), a middle rod (2) is connected through the holding housing (1), a control handle (3) is rotatably connected to the holding housing (1), a safety ring lock (4) is sleeved on the middle rod (2), the safety ring lock (4) is rotatably connected to the middle rod (2), a limiting block (41) is arranged on the safety ring lock (4), and the limiting block (41) can abut against the control handle (3).

2. The safety lock of a lawn mower according to claim 1, characterized in that, A ring lock opening is arranged on the holding housing (1), the safety ring lock (4) includes a socket ring (42), and a control board (43) is connected to the socket ring (42), and the control board (43) extends out of the ring lock opening.

3. The safety lock of a lawn mower according to claim 1, characterized in that, A ring lock limiting groove (11) is arranged in the holding housing (1), the ring lock limiting groove (11) is arranged on the side of the safety ring lock (4) away from the limiting block (41), and a guiding block (44) located in the ring lock limiting groove (11) is arranged on the safety ring lock (4).

4. The safety lock of a lawn mower according to claim 1, characterized in that, A ring lock installation groove (12) is arranged in the holding housing (1), the safety ring lock (4) includes a socket ring (42), and the socket ring (42) is arranged in the ring lock installation groove (12).

5. The safety lock of a lawn mower according to claim 1, characterized in that, A top block (31) is arranged on the side of the control handle (3) close to the safety ring lock (4), and the top block (31) can abut against the limiting block (41).

6. The safety lock of a lawn mower according to claim 5, characterized in that, The limiting block (41) is of a trapezoidal structure, the limiting block (41) includes a wide bottom part (411) on the side close to the top block (31), the limiting block (41) includes a narrowing part (412) on the side away from the top block (31), and when the safety ring lock (4) moves to a position where the limiting block (41) is misaligned with the top block (31), the side of the top block (31) is parallel to the side of the limiting block (41).

7. The safety lock of a lawn mower according to claim 5, characterized in that, A hollow groove (311) is arranged on the side of the top block (31).

8. A safety lock for a lawn mower according to any one of claims 1-7, characterized in that, The safety ring lock (4) includes a connecting inner ring (45), a plurality of positioning protrusions (451) are arranged on the connecting inner ring (45), and the positioning protrusions (451) abut against the middle rod (2).

9. The safety lock of a lawn mower according to claim 8, characterized in that, The safety ring lock (4) includes a connecting outer ring (46), a limiting block (41) is arranged on the connecting outer ring (46), and the positioning protrusions (451) are arranged corresponding to the position of the limiting block (41).

10. A safety lock for a lawn mower according to any one of claims 1-7, characterized in that, The control handle (3) includes a rotating part (32), an installation ring groove (33) is arranged on the rotating part (32), a torsion spring (34) is connected in the installation ring groove (33), one end of the torsion spring (34) abuts against the control handle (3), and the other end abuts against the holding housing (1).

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