Grass trimmer cord feeding device
The grass cutting cord dispensing device addresses thickness issues by using multiple springs and a locking mechanism to reduce bulkiness and stabilize operation, ensuring efficient cord dispensing and reduced effort.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- SAITO NENSHI
- Filing Date
- 2022-09-22
- Publication Date
- 2026-06-16
AI Technical Summary
Existing grass cutting cord type lawn mowers face issues with device thickness due to coil springs, leading to increased effort during operation, bulkiness during transportation, and storage, and the need for lifting the main pipe significantly from the ground surface.
A grass cutting cord dispensing device with a reel housed in a case, biased by multiple springs, allowing the grass-cutting cord to pass through holes between the springs, and featuring a locking mechanism that restricts rotation, reducing device thickness and enabling smooth unwinding.
The device achieves a reduced thickness, stabilizes posture during operation, prevents grass entanglement, and allows for efficient cord dispensing without increasing operational effort or bulkiness.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention relates to a grass cutting cord feeding device.
Background Art
[0002] As shown in Patent Document 1, there is known a grass cutting cord feeding device having a reel member, a pressing portion, a coil spring disposed between the pressing portion and a cap, and a case containing the coil spring and the reel member. The device is attached to the tip of a lawn mower using a hole provided in the cap. The pressing portion protrudes outside the case from the bottom of the case. By pressing the pressing portion against the ground, the reel member is rotated to feed out the grass cutting cord wound around the reel member.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In a grass cutting cord type lawn mower, during the process of grass cutting, the grass cutting cord gradually wears out, such as by abrasion or being cut into pieces. In the device of Patent Document 1, the grass cutting cord is wound around the reel member in advance, and when the grass cutting cord wears out, the worn grass cutting cord can be replaced by feeding out the grass cutting cord from the reel member.
[0005] In the device of Patent Document 1, since the coil spring is provided on the pressing portion, the thickness of the device tends to be large. When the thickness of the device is large, it is necessary to perform grass cutting with the main pipe of the lawn mower lifted significantly from the ground surface. When the thickness of the device is large, it becomes easier to get tired when operating the lawn mower. Also, when the thickness of the device is large, there is a problem of being bulky during transportation and storage.
[0006] The present invention aims to provide a grass cutting cord dispensing device that reduces the thickness of the device, in a grass cutting device that pre-winds the grass cutting cord and dispenses the grass cutting cord when it becomes worn out. [Means for solving the problem]
[0007] The present invention relates to a grass cutting cord dispensing device that is attached to the tip of a brush cutter, and comprises a case with a through hole for passing the grass cutting cord, a reel for winding the grass cutting cord, and a plurality of springs for biasing the reel, wherein the reel is housed in the case, the top of the reel is exposed outside the case, and the top is shaped to allow connection of the tip of a brush cutter, and a locking mechanism is provided on the inner surface of the reel and the case, the locking mechanism restricts the rotation of the reel in the direction of grass cutting cord dispensing, the restriction in the locking mechanism is released by displacing the reel against the biasing force of the springs, and the reel is provided with a grass cutting cord through hole that penetrates the reel in a direction intersecting the axial direction of the reel, and the through hole is provided so as to pass between the plurality of springs, thereby solving the above problem.
[0008] In the aforementioned device, the reel section is biased by multiple springs rather than a single spring, and the reel section is configured such that the grass-cutting cord passes through the holes between the multiple springs. This configuration avoids a layout where the springs overlap above or below the reel section, making it possible to reduce the thickness of the device.
[0009] In the above-mentioned device, it is preferable to further include a support seat that rotatably supports a plurality of springs, and during the unwinding process, the support seat rotates to rotate the reel section. This prevents the springs from falling out and allows the reel section to rotate smoothly.
[0010] In the above-mentioned device, it is preferable that the receiving seat and the inner surface of the case are provided with a projection and a groove that receives the projection, along the direction of rotation of the receiving seat. This configuration makes it possible to prevent the position of the receiving seat from shifting when the reel rotates.
[0011] In the above-mentioned device, the locking portion can be shaped by having a plurality of protrusions, each having a surface inclined with respect to the rotational direction of the reel portion and a surface perpendicular to the rotational direction of the reel portion, arranged in a continuous manner in the rotational direction of the reel portion.
[0012] In the above-mentioned device, the upper edge of the case can be provided with a plurality of projections having ridges that extend radially inward from the case in the direction of rotation of the case. This prevents grass from getting entangled in the drive shaft at the tip of the main pipe of the brush cutter.
[0013] In the above-mentioned device, it is preferable that the case comprises an upper case and a lower case, and that the upper case and the lower case are configured to be engaged or detachable.
[0014] In the above-mentioned device, it is preferable that the bottom surface of the case is flat. By making the bottom surface flat, the device can be made thinner. In addition, the device's posture becomes more stable when pressed against the ground.
[0015] In the above-mentioned device, it is preferable that when the bottom surface of the case is pressed against the ground, the reel section descends, the lock on the lock section is released, and the grass-cutting cord wound around the reel section is unwound by the centrifugal force generated when the reel section is rotated by the power of the brush cutter.
[0016] In the above-described device, other locking portions different from the locking portion are provided on the lower surface of the reel and the inner surface of the lower side of the case, and it is preferable that the rotation of the reel portion in the feeding direction of the grass cutting cord is restricted by the other locking portions. Thereby, for example, by strongly pressing the device against the ground, the feeding of the grass cutting cord can be stopped.
Effect of the Invention
[0017] According to the present invention, there is provided a grass cutting cord feeding device with a reduced thickness of the device in a device that pre-winds the grass cutting cord and feeds the grass cutting cord when the grass cutting cord is worn out to perform grass cutting.
Brief Description of the Drawings
[0018] [Figure 1] It is a perspective view showing an embodiment of a grass cutting cord feeding device. [Figure 2] It is a perspective view showing the state of the grass cutting cord feeding device of FIG. 1 as viewed from below. [Figure 3] It is a cross-sectional view of the grass cutting cord feeding device of FIG. 1. [Figure 4] It is a perspective view showing the disassembled state of the grass cutting cord feeding device of FIG. 1 from an upper perspective. [Figure 5] It is a perspective view showing the disassembled state of the grass cutting cord feeding device of FIG. 1 from a lower perspective. [Figure 6] In the grass cutting cord feeding device of FIG. 1, it is a perspective view showing the state where the upper case, the reel portion, and the spring are removed. [Figure 7] It is a perspective view showing the state of the reel portion incorporated in the grass cutting cord feeding device of FIG. 1 as viewed from below. [Figure 8] It is a cross-sectional view schematically showing the states of the first locking portion and the second locking portion in a state where the grass cutting cord feeding device is not pressed against the ground. [Figure 9]It is a cross-sectional view schematically showing the states of the first lock portion and the second lock portion in a state where the grass cutting cord feeding device is pressed against the ground. [Figure 10] It is a cross-sectional view schematically showing the states of the first lock portion and the second lock portion in a state where the grass cutting cord feeding device is more strongly pressed against the ground. [Figure 11] It is a cross-sectional view showing another embodiment of the grass cutting cord feeding device.
Embodiments for Carrying out the Invention
[0019] Hereinafter, embodiments of the grass cutting cord feeding device (hereinafter, may be simply referred to as a device) of the present invention will be described. The embodiments and usage examples shown below are merely limited examples of the present invention, and the technical scope of the present invention is not limited to the illustrated embodiments.
[0020] [First Embodiment] The device according to the first embodiment is shown in FIGS. 1 to 10.
[0021] The device 1 of the present embodiment is a grass cutting cord feeding device used by being attached to the tip of a lawn mower. The method and structure for attaching to the tip of the lawn mower are not particularly limited. In the device 1, as shown in FIG. 3, a power shaft 91 protruding from a gear case provided at the tip of the main pipe of the lawn mower is fixed to a concave hole 112 provided at the top 111 of a reel portion 11 described later. In the example of FIG. 1, a first fixture 12 having a through hole 121 and a second fixture 13 are fixed to the concave hole 112 of the reel portion 11. The power shaft 91 is fixed to the second fixture 13. When mowing grass with the lawn mower, as indicated by the arrow in FIG. 1, the case 14 rotates counterclockwise together with the case 14, and the grass cutting cord 92 (FIG. 2) wound around the reel portion 11 built in the case 14 also rotates integrally with the case 14. The rotating grass cutting cord 92 is brought into contact with the grass to perform grass cutting.
[0022] As shown in Figure 3, the device 1 includes a case 14 with a through hole 93 for passing the grass cutting cord 92, a reel section 11 for winding the grass cutting cord 92, and a plurality of springs 15 that bias the reel section 11 upward.
[0023] As shown in Figure 3, the reel portion 11 is housed in the case 14, with the top portion 111 of the reel portion 11 exposed outside the case, and shaped to allow connection of the tip of a brush cutter to the top portion 111. A locking portion 81 is provided on the inner surface of the reel portion 11 and the case 14, as shown in Figure 8, etc. The locking portion 81 restricts the rotation of the reel portion 11 in the direction of unwinding the grass cutting cord 92, and the restriction in the locking portion 81 is released by displacing the reel portion 11 against the biasing force of the spring 15. As shown in Figures 3 and 7, the reel portion 11 is provided with a through hole 151 for the grass cutting cord 92 that penetrates the reel portion 11 in a direction intersecting the axial direction. The through hole 151 is straight to facilitate the passage of the grass cutting cord and is provided to pass between the multiple springs 15.
[0024] As shown in Figure 3, the reel portion 11 has a cylindrical upper part and a thread winding portion 155 provided on the side circumference of the reel portion 11. The upper cylindrical part is made of plate material and is hollow inside. The bottom of the reel portion 11 is open. The thread winding portion 155 is made of a plurality of flanges provided on the circumference of the reel portion 11. As described above, the reel portion 11 is provided with a through hole 151 for the grass cutting cord 92 that penetrates the reel portion 11 in a direction intersecting the axial direction of the reel portion 11. The through hole 151 is made of a pipe 152 that extends in a direction intersecting the axial direction of the reel portion 11. The pipe 152 is made integrally with the top portion 111 and is formed, for example, by integrally molding the pipe 152 and the reel portion 11 from plastic. The through hole 151 is provided to open inside the flange of the thread winding portion 155. The amount by which the upper part of the reel section 11 protrudes from the case 14 can be changed as appropriate.
[0025] As shown in Figure 3, multiple fixing parts 153 for springs 15 are provided on the back surface of the top of the hollow reel section 11. The fixing parts 153 are X-shaped projections made of two perpendicular plates, and are shaped to allow the ends of coil springs to be fitted onto them. Some of the multiple fixing parts 153 are provided with wall parts 154 that conform to the outer shape of the coil springs. When the upper ends of the springs 15 are fixed to the fixing parts 153, the upper ends of the springs 15 are positioned below the back surface of the top section 111, above the thread winding section 155, and above the through-hole 151. As a result, at least a portion of the springs 15 are housed inside the reel section 11. The thickness of the device 1 is reduced by the amount that the springs 15 are housed inside.
[0026] As shown in Figures 4 and 5, the upper surface of the upper flange of the reel section 11 is provided with a plurality of protrusions 811 that constitute the locking section 81, as described above. The plurality of protrusions 811 are arranged in a circular pattern. The locking section 81 is referred to as the first locking section 81. On the inner surface of the upper case 141, protrusions 812 that constitute the first locking section 81 are also provided at positions corresponding to the protrusions 811 when the reel section 11 is housed in the case 14.
[0027] As shown in Figure 5, a plurality of protrusions 821 constituting a locking part 82, different from the first locking part 81, are provided at the bottom of the central part of the reel section 11. The plurality of protrusions 821 are arranged in a circular pattern. This locking part 82 is referred to as the second locking part 82. On the inner surface of the lower case 142, as shown in Figure 4, protrusions 822 constituting the second locking part 82 are also provided at positions corresponding to the protrusions 821 when the reel section 11 is housed in the case 14. The second locking part 82, provided at the bottom of the central part of the reel section 11, is provided at the lower end of a circular wall that protrudes from the top 111 toward the lower case 142, as shown in Figure 5. Note that the protrusions constituting the second locking part may also be provided on the lower surface of the lower flange of the reel section. In this case, the protrusions on the lower case should also be provided at corresponding positions.
[0028] The case 14 has a hollow section, which houses multiple springs 15, a reel section 11, and other components. It has a flattened shape with a large diameter relative to its thickness. The case 14 is approximately circular in shape when viewed from above or from below. An opening is provided on the top surface of the case 14 that communicates with the hollow section. The top 111 of the reel section 11 is exposed outside the case through this opening.
[0029] The case 14 comprises an upper case 141 and a lower case 142. The upper case 141 and the lower case 142 are configured to be engageable or detachable. As shown in Figures 4 and 5, the inner surfaces of the upper case 141 and the lower case 142 are provided with a number of fixing protrusions 4 and 5. The protrusion 4 is provided on the inner surface of the upper case, protrudes toward the lower case 142, and has a ridge 41 and a groove 42 extending in the circumferential direction of the upper case 141. The protrusion 5 has a ridge 51 extending in the circumferential direction of the lower case and a ridge 52 extending from the end of the ridge 51 toward the bottom of the case 14.
[0030] When the lower case 142 and the upper case 141 are brought together and either the lower case 142 or the upper case 141 is rotated in the circumferential direction, the projection 41 of projection 4 enters the gap between the projection 51 of projection 5 and the bottom and comes into contact with the projection 52 of projection 5. This causes the upper case 141 and the lower case 142 to engage, or join together. To separate them, the lower case 142 or the upper case 141 is rotated in the opposite direction. The projection 52 is provided to restrict the rotation of the projection 41 of the upper case 141 when the upper case 141 is rotated together with the lower case.
[0031] The lower case 142 has a side wall portion 53 that protrudes upward. The upper case has a side wall portion 43 that protrudes downward. The side wall portions 53 and 43 house the reel portion 11 inside the case 14 and protect it from dust, water, and other elements.
[0032] A fitting 94 is attached to the side wall 53 of the lower case 142, and has a through hole 93 with an inner diameter suitable for inserting the grass cutting cord 92. The side wall 53 is provided with a notch 95 corresponding to the fitting 94. The fitting 94 is fixed to the lower case by inserting the protrusion of the fitting 94 along the groove provided in the notch 95. The fitting 94 is made of metal and is designed to be resistant to wear caused by the grass cutting cord.
[0033] As shown in Figure 1, the upper edge of the case 14 is provided with a plurality of protrusions 71, each having a first ridge 711 extending radially outward from the case 14 and an arc-shaped second ridge 712 extending radially inward from the case in the direction of rotation. As indicated by the arrows in Figure 1, when mowing grass with a brush cutter, the case 14 rotates counterclockwise as described above. At this time, the grass comes into contact with the second ridge 712 and is repelled away from the center of the case 14. This prevents the grass from becoming entangled in the drive shaft at the tip of the brush cutter's main pipe. The second ridge can be any shape that can repel grass, and may, for example, be a straight line.
[0034] As shown in Figure 4, the lower case 142 is provided with a plurality of projections 822 that constitute the second locking portion 82 in its central part. The plurality of projections 822 are arranged in a circular pattern. Around the plurality of projections 822 provided on the lower case 142, a circular groove 83 is provided so as to surround the projections 822. A seat 61, which has a protrusion 611 on its bottom surface that fits into the groove 83 and slides within the groove, is placed on this groove 83. The upper surface of the seat 61 has a plurality of protrusions 612 for fixing the spring. The protrusions 612 are cylindrical in shape, suitable for externally fitting the lower end of the coil spring. When changing the position of the projections 821 of the second locking portion 82 as described above, the position of the projections 822 is also changed accordingly. Alternatively, the protrusion may be provided on the inner surface of the lower case and the groove on the seat.
[0035] As shown in Figure 6, the support seat 61 is a ring-shaped member made of a flat plate, and supports multiple springs in a rotatable state. When the grass cutting cord 92 is unwound from the reel section 11, the support seat 61, the multiple springs 15 with one end supported by the support seat 61, the reel section, and the multiple springs 15 with the other end supported by the reel section rotate together as shown by the arrows in Figure 6. This prevents the springs 15 from bending or one or the other end of the springs 15 from falling off when the reel section 11 rotates. It also ensures that the rotation of the reel section 11 is stable and smooth. The support seat is not limited to a ring-shaped and flat plate shape, but can be any shape that contacts the inner surface of the lower case and can support the springs. For example, the support seat may be a plate without through holes. The support seat 61 rotates in the opposite direction when winding the grass cutting cord 92.
[0036] As shown in Figures 4 and 6, a plate-shaped rotating part 8 that rotates freely independently of the lower case 142 is fixed to the bottom of the lower case 142. A fixing projection 41 is provided on the upper surface of the rotating part 8, and this projection 41 is inserted through a circular hole in the ring-shaped spacer 42 and a hole provided in the center of the lower case 142. The horizontally extending projection of the projection 41 is inserted through a hole in the plate-shaped fixing part 43, and the fixing part 43 is rotated horizontally to fix the rotating part 8 to the lower case 142. A projection of a retaining member 44 is inserted into the hole in the fixing part 43 to prevent the rotating part 8 from falling out unintentionally. The plate-shaped fixing part 43 is provided with a projection adjacent to the hole that restricts the rotation of the projection of the projection 41.
[0037] The bottom surface of the case 14 is flat. This eliminates the need for a protruding pressing part, making the device 1 thinner. Also, when the device 1 is pressed against the ground to extend the grass-cutting cord 92, the flat bottom surface of the case 14 helps to stabilize the posture of the device 1.
[0038] Figures 8 to 10 show the projections 811 and 812 constituting the first locking part 81 and the projections 821 and 822 constituting the second locking part 82. Since these projections are all arranged in a circular shape, they do not strictly take the shapes shown in Figures 8 to 10, but for illustrative purposes they have been simplified as shown in Figures 8 to 10. As shown in Figure 8, the first locking part 81 and the second locking part 82 have a shape in which multiple projections, each having a surface inclined with respect to the rotational direction of the reel part 11 and a surface perpendicular to the rotational direction of the reel part 11, are arranged in a continuous manner in the rotational direction of the reel part. In Figures 8 to 10, the direction in which the grass cutting cord is paid out is indicated by an arrow labeled D1, and the direction in which the grass cutting cord is wound up is indicated by an arrow labeled D2. D1 is counterclockwise, and D2 is clockwise.
[0039] The projection 812 on the upper case 141 of the first locking part 81 slopes downward toward D1. The projection 811 on the reel part 11 of the first locking part 81 slopes upward toward D1. The projection 821 on the reel part 11 of the second locking part 82 slopes upward toward D1. The projection 822 on the lower case 142 of the first locking part 81 slopes downward toward D1.
[0040] When the device 1 is not pressed against the ground, as shown in Figure 8, the vertical surfaces of projection 811 and projection 812 come into contact, restricting the rotation of the reel section 11 in the D1 direction and limiting the payout of the grass cutting cord 92 from the reel section 11. The grass cutting work is performed with the first locking section 81 locked, as shown in Figure 8. The first locking section 81 locks the reel section 11 and the case 14 so that they cannot rotate, and the power output from the brush cutter causes the reel section 11 and the case 14 to rotate as a single unit.
[0041] When device 1 is pressed against the ground, as shown in Figure 9, the reel section 11 descends against the spring force of spring 15, with the upper case 141 and lower mold case 142 as references, and the engagement between the vertical surface of projection 811 and the vertical surface of projection 812 is released. As a result, the lock of the first lock section 81 is released, and when the reel section 11 is rotated by the power of the brush cutter, the case 14 does not rotate, and only the reel section 11 rotates. The centrifugal force of the rotating reel section 11 can be used to unwind the grass cutting cord wound around the reel section 11.
[0042] To stop the grass cutting cord from being dispensed, the power to the brush cutter can be stopped. However, even if the power to the brush cutter is stopped, the reel section 11 will continue to rotate due to inertia, depending on the rotational speed. By pressing the device 1 further against the ground, the reel section 11 will descend further against the spring force of the spring 15, with the upper case 141 and lower mold case 142 as references, and the vertical surfaces of projection 821 and projection 822 will engage, as shown in Figure 10. This stops the rotation of the reel section 11 due to inertia, and forcibly stops the grass cutting cord 92 from being dispensed due to inertia. Once the rotation of the reel section 11 due to inertia has stopped, by lifting the device 1 off the ground, the reel section 11 will rise due to the spring force of the spring 15, and the first lock section 81 will return to the locked state.
[0043] The grass cutting cord 92 may be extended manually, without relying on the power of the brush cutter, by repeatedly pressing the device 1 against the ground and lifting it off the ground. By repeating this operation, the reel section 11 can be rotated in the D1 direction by utilizing the sliding of the projections 811 and 812 of the first locking section 81 on their inclined surfaces and the sliding of the projections 821 and 822 of the second locking section 82 on their inclined surfaces. To achieve this objective, the tops of the projections 811 and 812 of the first locking section 81 and the tops of the projections 821 and 822 of the second locking section 82 are positioned offset from the rotation direction of the reel section.
[0044] When loading the grass cutting cord 92 into the device 1, the grass cutting cord 92 is inserted through the through hole 93 of the case 14 and the through hole 151 of the grass cutting cord 92. The user can wind the grass cutting cord 92 onto the reel by pressing down on the top 111 with their hand and rotating the reel 11 in the D2 direction.
[0045] In device 1, the rotating part 8 of the lower case 142 rotates independently. Therefore, for example, even if device 1 is pressed against the ground while case 14 is rotating, only the rotating part 8 will make contact with the ground, and the rotation of the lower case 142 will not be transmitted to the ground. When device 1 is pressed against the ground, it is less likely that the device will shake violently due to the power of the brush cutter, and stones will not be thrown around by the rotation of the lower case 142.
[0046] [Second Embodiment] The apparatus 1b of the second embodiment differs from apparatus 1 only in the configuration of the lower case 142b. The lower case 142b of apparatus 1b does not have a rotating part. Apparatus 1b has fewer parts, is relatively lightweight, and can be manufactured at low cost. [Explanation of Symbols]
[0047] 1. Grass trimmer cord feeding device 1b. Grass trimmer cord feeding device 92 Grass trimmer cord 14 cases 141 Upper case 142 Lower case 11 Reel section 15 Spring 81 Lock section 82 Lock section 61 catch seat 611 Convex Strip 83. Groove 71 Protrusion
Claims
1. This is a device for feeding out grass cutting cords, which is attached to the tip of a brush cutter. The device comprises a case with a through-hole for passing a grass-cutting cord, a reel for winding the grass-cutting cord, and a plurality of springs for biasing the reel. The reel section is housed within the case, with the top of the reel section exposed outside the case, and is shaped to allow the tip of a brush cutter to be connected to the top. A locking mechanism is provided on the inside of the reel and case. The locking mechanism restricts the rotation of the reel in the direction of the grass-cutting cord's payout, and by displacing the reel against the biasing force of the spring, the restriction in the locking mechanism is released. The reel portion is provided with a hole for the grass cutting cord that penetrates the reel portion in a direction intersecting the axial direction of the reel portion, and the grass cutting cord dispensing device is provided such that the hole passes between the plurality of springs.
2. It further includes a seat that supports multiple springs in a rotatable manner, The grass cutting cord dispensing device according to claim 1, wherein the receiving seat rotates during the dispensing process, thereby rotating the reel section.
3. The grass cutting cord feeding device according to claim 2, wherein the receiving seat and the inner surface of the case are provided with a protrusion and a recessed groove for receiving the protrusion, along the rotational direction of the receiving seat.
4. The grass cutting cord dispensing device according to claim 1 or 2, wherein the locking portion has a shape in which a plurality of protrusions, each having a surface inclined with respect to the rotational direction of the reel portion and a surface perpendicular to the rotational direction of the reel portion, are arranged in a continuous manner in the rotational direction of the reel portion.
5. The grass cutting cord dispensing device according to claim 1 or 2, wherein the upper edge of the case is provided with a plurality of projections having ridges that extend radially inward from the case in the direction of rotation of the case.
6. The grass cutting cord dispensing device according to claim 1 or 2, wherein the case comprises an upper case and a lower case, and the upper case and the lower case are configured to be engageable or detachable.
7. The grass cutting cord dispensing device according to claim 1 or 2, wherein the bottom surface of the case has a flat shape.
8. The grass cutting cord dispensing device according to claim 1 or 2, wherein when the bottom surface of the case is pressed against the ground, the reel section descends, the lock on the lock section is released, and the grass cutting cord wound on the reel section is dispensed by the centrifugal force generated when the reel section is rotated by the power of the brush cutter.
9. The underside of the reel and the inner surface of the underside of the case are provided with a locking mechanism different from the aforementioned locking mechanism. The grass cutting cord dispensing device according to claim 1 or 2, wherein the rotation of the reel in the direction of dispensing the grass cutting cord is restricted by the aforementioned other locking part.