Hand-held drill and shovel apparatus

Abstract

The utility model relates to handheld tool equipment technical field more specifically, more specifically relates to the handheld equipment of improving the convenience of drilling and spade. The handheld drilling and spade equipment includes: the holding handle, and the drill and the shovel board connected in the holding handle one end, and the shovel board is formed with the load bearing structure to the drill chip in the drill one side, the holding handle is connected with the driving motor, and it has the power output shaft for outputting the rotary force, the power output shaft transmission is connected in the drill and drives the drill to carry out the rotary operation. The above structure jointly forms: the handheld drilling and spade equipment of improving the convenience of hole or cavity excavation operation.

Description

Technical Field

[0001] This utility model relates to the field of handheld tool equipment technology, and more specifically to a handheld device that improves the convenience of drilling tools. Background Technology

[0002] In common home garden applications, it is often necessary to dig small holes or trenches in the ground. For example, garden shovels are typically used for planting plants, burying bulbs, laying outdoor lighting cables, outdoor audio cables, fence posts, sprinkler hoses, and other tasks. However, using a handheld garden shovel for such ground hole and cavity digging operations can be difficult and laborious. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a handheld drilling shovel device that improves the convenience of hole or cavity excavation operations.

[0004] The technical solution of this utility model is as follows:

[0005] This invention addresses the problem that existing handheld garden shovels may be difficult and laborious to use for excavating holes and cavities in the ground.

[0006] Based on this, the present invention provides a handheld drilling shovel device that improves the convenience of excavating holes or cavities in the ground, comprising:

[0007] A grip handle, and a drill bit and a scraper plate connected to one end of the grip handle, the scraper plate being positioned on one side of the drill bit to form a structure for bearing drill cuttings;

[0008] The grip handle is connected to a drive motor, which has a power output shaft for outputting rotational force;

[0009] The power output shaft is connected to the drill bit and drives the drill bit to rotate.

[0010] During operation, the drill bit can rotate to drill holes, while the stationary shovel plate is usually placed below the drill bit to support the drill cuttings (such as soil produced during drilling), preventing them from falling into the holes drilled by the drill bit, and can be collected and removed, improving the convenience of hole or cavity excavation operations on the ground.

[0011] Furthermore, handheld drilling equipment combines drilling and digging functions. It typically includes a drive motor to provide rotational force and a drill bit to receive the rotational force for rotating digging. Based on the digging requirements of handheld tools, the drive motor and the drill bit's shaft need to be connected by a reducer to reduce speed and increase torque, thereby enabling the drill bit to dig holes stably and powerfully at low speed and high torque.

[0012] For handheld excavators, not all reducer structures are suitable for selection and adaptation. For example, when using a conventional reducer structure, a small gear is fixed to the power output shaft of the drive motor, and a large gear is fixed to the drill bit shaft, with the small gear meshing with the large gear to achieve speed reduction. On the one hand, the handheld device needs a large space to accommodate the two misaligned gears, which necessitates a large housing structure, making it difficult to meet the requirements of small size and portability for handheld devices. On the other hand, the drill bit shaft and the power output shaft must also be misaligned, further increasing the requirements for a large housing.

[0013] Based on this, the present invention further provides a handheld drilling shovel device that better meets the needs of using handheld tools, comprising:

[0014] A grip handle, and a drill bit and a scraper plate connected to one end of the grip handle, the scraper plate being positioned on one side of the drill bit to form a structure for bearing drill cuttings;

[0015] The grip is connected to a drive motor, which has a power output shaft for outputting rotational force;

[0016] The drill bit includes: a drill bit shaft rotatably connected to a grip handle, and cutting blades extending helically on the outer periphery of the drill bit shaft;

[0017] The power output shaft is connected to the drill bit shaft via a planetary reduction gear set, which is a planetary gear transmission structure that reduces the rotation of the power output shaft and transmits it to the drill bit shaft.

[0018] In other words, in the above solution, considering the use of handheld devices, a planetary gear reducer is used as the speed reduction transmission structure between the drill bit shaft and the power output shaft. This not only stably reduces the rotational power of the power output shaft and increases the torque to the drill bit shaft, driving the drill bit to rotate at low speed and high torque, but also requires less space and can achieve a more compact layout, thereby reducing the size of the handheld drilling shovel and thus meeting the portability requirements of the handheld drilling shovel.

[0019] Of course, the planetary gear reduction assembly in the above scheme can have various structures. However, considering the stability requirements of the transmission, to ensure that the drill bit is under normal inclined force conditions (combined with the setting of the shovel plate, it often exhibits an attached...), Figure 2 Even when digging holes as shown, the work can still proceed stably.

[0020] In some designs, the planetary deceleration assembly includes a first-stage deceleration structure, which comprises:

[0021] A primary transmission gear fixed to the power output shaft and rotating coaxially with the power output shaft;

[0022] A primary output wheel is rotatably connected to the grip handle and rotates coaxially with the primary transmission gear. This primary output wheel is connected to the drill bit shaft and grounded, driving the drill bit shaft to rotate.

[0023] The first-stage planetary gear is rotatably connected to the first-stage output gear. There are multiple first-stage planetary gears, which are distributed at intervals around the first-stage transmission gear, and each first-stage planetary gear is meshed with the first-stage transmission gear.

[0024] A primary positioning gear ring is fixed to the grip handle and surrounds the primary transmission gear. Several primary planetary gears are placed inside the primary positioning gear ring, and each primary planetary gear is meshed with the inner wall of the primary positioning gear ring.

[0025] By using a fixed first-stage positioning gear ring to support the rotation of the first-stage planetary gear and forming a fixed track limit, the first-stage planetary gear can rotate stably, and the overall transmission stability and installation stability of the planetary reduction gear set are improved. When the handheld drilling shovel is digging at different angles, it can better and more stably bear the force.

[0026] Based on the above, in order to further improve the stability of the transmission structure and better adapt to excavation force application actions at different angles.

[0027] In some designs, several primary planetary gears are evenly distributed around the outer periphery of the primary drive gear. This ensures a uniform force distribution around the primary drive gear. When the handheld drill bit is used for digging at different angles, the primary drive gear can stably transmit rotational power to the primary output wheel and drill bit shaft via the primary planetary gears.

[0028] Of course, considering the transmission ratio limitation of the single-stage reduction structure, in order to have a larger reduction ratio adjustment range.

[0029] In some designs, the planetary reduction gear also includes a secondary reduction structure positioned between the primary output wheel and the drill bit shaft;

[0030] The primary output wheel is connected to the drill bit shaft via this secondary reduction structure, which reduces the speed of the primary output wheel's rotation and transmits it to the drill bit shaft. This forms a multi-stage planetary reduction structure, which increases the adjustment range of the reduction ratio and adapts to different working conditions.

[0031] The two-stage reduction structure of this utility model can also have various structures. However, considering the excellent transmission stability and stress stability of the above-mentioned first-stage reduction structure, the two-stage reduction structure in this utility model is preferably designed with a corresponding structure.

[0032] That is, in some schemes, the two-stage deceleration structure includes:

[0033] The secondary transmission gear is located on the side wall of the primary output wheel that faces away from the power output shaft and rotates coaxially with the primary output wheel;

[0034] A secondary output wheel is rotatably connected to the grip handle and rotates coaxially with the primary transmission gear. This secondary output wheel is connected to the drill bit shaft and grounded, driving the drill bit shaft to rotate.

[0035] The secondary planetary gears are rotatably connected to the secondary output gear. There are multiple secondary planetary gears, which are distributed at intervals around the secondary transmission gear, and each secondary planetary gear is meshed with the secondary transmission gear.

[0036] A secondary positioning gear ring is fixed to the grip handle and surrounds the secondary transmission gear. Several secondary planetary gears are placed inside the secondary positioning gear ring, and each secondary planetary gear is meshed with the inner wall of the secondary positioning gear ring.

[0037] To further improve the stability of the transmission structure and better adapt to excavation force application actions at different angles.

[0038] In some designs, several second-stage planetary gears are evenly distributed around the outer periphery of the first-stage transmission gear.

[0039] In the above-mentioned planetary reduction gear schemes, especially in the planetary reduction gear schemes with multi-stage reduction structures, the first-stage transmission gear, as the transmission structure that directly outputs power from the output shaft, suffers from problems such as large load-bearing capacity, easy skewness, or unstable rotation.

[0040] Therefore, in some designs, a supporting planetary gear is rotatably connected to the primary transmission gear, located between the primary transmission gear and the drive motor.

[0041] Multiple planetary gears are provided, and these multiple planetary gears are distributed at intervals around the power output shaft;

[0042] The grip handle is fixedly connected to a support and positioning gear ring that surrounds the power output shaft;

[0043] Several supporting planetary gears are placed within the supporting positioning gear ring, and each supporting planetary gear is meshed with the inner wall of the supporting positioning gear ring. This further improves the transmission stability of the primary transmission gear and enhances its load-bearing capacity. During excavation operations at different angles, the primary transmission gear can better and more stably transmit the rotational power of the power output shaft to the planetary reduction gear set, which then transmits it to the drill bit to drive it to perform stable hole drilling operations.

[0044] For handheld drilling equipment, in order to meet the usage needs of handheld tools in more dimensions.

[0045] In some designs, the length of the drill bit's protrusion at the handle end is greater than the length of the shovel's protrusion at the handle end. This allows the drill bit to contact the object being excavated faster than the shovel, and the shovel is less likely to obstruct the drill bit's digging. In other words, it eliminates the need to forcefully insert the shovel until the drill bit contacts the object before digging can begin, making the digging action more effortless.

[0046] In some designs, the grip includes: a housing portion for connecting to the planetary deceleration assembly, and a grip housing portion for gripping and applying force;

[0047] The drill bit and the gripping housing are respectively located at opposite ends of the housing, and the extending direction of the gripping housing is angled to the extending direction of the drill bit shaft, resulting in a force application angle A between the drill bit shaft and the gripping housing. This allows the operator to more easily push the drill bit shaft to perform drilling operations by gripping the gripping housing, improving the convenience and force application efficiency of the handheld drilling rig.

[0048] In some designs, a baffle is also provided at one end of the handle, which completely shields the drill bit in the direction from the handle to the drill bit. When the operator holds the handle to push the drill bit for digging work, the baffle forms a protective structure, better preventing drill cuttings or other debris from splashing onto the handle and injuring the operator's hands under the drive of the drill bit's rapid rotation.

[0049] In some designs, a battery is also connected to the handle, which is electrically connected to the drive motor to supply power. This eliminates the need to constantly search for a power source, improving the convenience of using handheld drilling rigs outdoors and greatly expanding the environments and ranges in which they can be used.

[0050] The main beneficial effects of the above technical solution are as follows:

[0051] 1. A handheld excavation device combining a drill bit and a shovel blade has been developed, which can improve the convenience of excavating holes or cavities in the ground.

[0052] 2. The planetary reduction gear is used for transmission. This reduces the rotational speed and increases the drill bit torque, thereby improving the stability of hole excavation and increasing the load. Combined with the characteristics of the planetary gear transmission structure, it can better achieve a compact layout, reduce the overall size and weight, and make the handheld drilling shovel equipment more compact and lightweight, better meeting the convenience requirements of handheld equipment.

[0053] 3. The planetary transmission structure, which forms a fixed gear track on the outer ring of the planetary gear, not only supports the rotation of the planetary gears but also limits their movement, enabling them to rotate stably. It also improves the overall transmission stability and installation stability of the planetary reduction gear set. When the handheld drilling shovel is used for digging at different angles, it can better and more stably bear the force.

[0054] 4. The planetary gears are evenly distributed and share the load, resulting in a stronger torque output per unit volume. This allows for greater torque output within a compact volume, better meeting the hole digging load requirements of handheld devices.

[0055] 5. Through a multi-stage reduction transmission structure, and by making more gears contact the power of the transmission simultaneously, the single-tooth load is reduced, the transmission efficiency and stability are improved, and the impact resistance is enhanced. During inclined digging operations, it can also better ensure stable transmission operations and better meet the hole digging load requirements of handheld equipment.

[0056] 6. By limiting the dimensions of the shovel and drill bit in a handheld drilling device that combines a drill bit and a shovel, the handheld drilling device can be used to drill holes more effortlessly.

[0057] 7. Based on the drilling scenarios required for handheld drilling equipment, the handle was improved to enhance the convenience and efficiency of using the handheld drilling equipment.

[0058] 8. Based on the drilling scenarios required by the handheld drilling equipment, baffles are installed to improve the safety and protection of the handheld drilling equipment during use.

[0059] 9. Equipped with a battery, it better expands the usage scenarios of handheld devices and improves the convenience of carrying and using handheld drilling rigs.

[0060] Further or more detailed beneficial effects will be described in conjunction with specific embodiments in the detailed implementation. Attached Figure Description

[0061] The present invention will be further described below with reference to the accompanying drawings.

[0062] Figure 1This is a schematic diagram of the overall structure of a handheld drilling rig.

[0063] Figure 2 This is a schematic diagram illustrating the use of a handheld drilling rig.

[0064] Figure 3 This is a schematic diagram of the handle structure of a handheld drilling rig.

[0065] Figure 4 This is a schematic diagram of the installation of the first-stage deceleration structure.

[0066] Figure 5 This is a schematic diagram of a single-stage deceleration structure.

[0067] Figure 6 This is a schematic diagram of the installation of a multi-stage deceleration structure.

[0068] Figure 7 This is a schematic diagram of a multi-stage deceleration structure.

[0069] Figure 8 This is a schematic diagram of the overall installation of the planetary reduction gear assembly.

[0070] Figure 9 A schematic diagram of a handheld drilling shovel with a shovel plate made of soft material. Detailed Implementation

[0071] The present invention will be illustrated with specific examples below:

[0072] Example:

[0073] Handheld drilling rigs, such as those with attachments Figure 1 The image shows a handheld tool used for digging holes in the ground or other objects.

[0074] As attached Figure 1 To be continued Figure 8 As shown, the handheld drilling shovel device in this embodiment includes: a grip handle 1 for the operator to hold, and a drill bit 2 and a shovel plate 3 connected to one end of the grip handle 1. The shovel plate 3 is positioned on one side of the drill bit 2 and forms a bearing structure for drill cuttings.

[0075] The drill bit 2 includes: a drill bit shaft 2.1 rotatably connected to the grip handle 1, and a cutting blade 2.2 extending helically on the outer periphery of the drill bit shaft 2.1, so that the drill bit 2 can rotate on the grip handle 1.

[0076] The shovel plate 3 is a plate that is detachably connected to the handle 1 by means of a detachable connection structure such as screws or clips. When the drill bit 2 is drilling, the shovel plate 3 is usually placed below the drill bit 2 and forms a load-bearing structure to prevent drill cuttings generated when the drill bit 2 is drilling from falling into the hole.

[0077] As attached Figure 3 As shown, the drill bit 2 is protruding at one end of the handle 1, and the shovel plate 3 is also protruding at one end of the handle 1 and located on one side of the drill bit 2; and the protruding length of the drill bit 2 at one end of the handle 1 is greater than the protruding length of the shovel plate 3 at one end of the handle 1.

[0078] Simultaneously, the handle 1 is connected to a drive motor 4 for providing rotational force, which has a power output shaft 4.1 for outputting rotational force. The drive motor 4 receives power through an electrical connection to a power source, which can be a socket structure, whereby the drive motor 4 is connected to the socket via a wire during use; or, as shown in the attached diagram... Figure 1 As shown, a battery 8 can also be installed and connected to the grip handle 1, which powers the drive motor 4 in an electrical connection. The battery 8 can be a lithium battery or other rechargeable battery that can be recharged repeatedly.

[0079] The power output shaft 4.1 is connected to the drill bit shaft 2.1 via a planetary reduction gear 5. The planetary reduction gear 5 is a planetary gear transmission structure that reduces the rotation of the power output shaft 4.1 and transmits it to the drill bit shaft 2.1.

[0080] Thus, as attached Figure 2 As shown, during the drilling operation, the drive motor 4 is powered on, and the drill bit shaft 2.1 rotates. This rotation is slowed down by the planetary reduction gear 5 and transmitted to the drill bit 2. The drill bit 2 rotates rapidly to perform hole excavation when it is inserted into the ground soil c. When the drill bit 2 drills to form drill cuttings, the drill cuttings fall onto the shovel plate 3 due to gravity and are caught by the shovel plate 3, thus preventing them from falling back into the hole and forming unwanted fill.

[0081] Furthermore, the grip handle 1 may include: a storage housing portion 1.1 connected to the planetary reduction gear 5, and a gripping housing portion 1.2 for gripping and applying force. The drill bit 2 and the gripping housing portion 1.2 are respectively located at both ends of the storage housing portion 1.1, and the extending direction of the gripping housing portion 1.2 is angled with the extending direction of the drill bit shaft 2.1 to achieve a force application angle A between the drill bit shaft 2.1 and the gripping housing portion 1.2.

[0082] For example, attached Figure 3 As shown, the axis (a) of the drill spindle 2.1 is horizontally arranged, and the gripping housing 1.2 is, for example, an inclined column. The central axis (b) of the gripping housing 1.2 is inclined to form an angle A with the axis of the drill spindle 2.1. This angle A is formed so that when the gripping housing 1.2 is gripped, it is convenient to apply a thrust to the gripping handle 1 to drive the drill spindle 2.1 to drill along the axis of the drill spindle 2.1.

[0083] Among them, planetary reduction gear 5 can be a single-stage transmission structure.

[0084] For example, attached Figure 4 and attached Figure 5 As shown, the planetary reduction gear 5 includes a first-stage reduction structure, which includes: a first-stage transmission gear 5.1, a first-stage output wheel 5.2, a first-stage planetary gear 5.3, and a first-stage positioning gear ring 5.4.

[0085] The primary transmission gear 5.1 is fixed to the power output shaft 4.1 by means of a screw, for example, and rotates coaxially with the power output shaft 4.1. The primary output wheel 5.2 is rotatably connected to the grip handle 1, and the rotation axis of the primary output wheel 5.2 is collinear with the rotation axis of the primary transmission gear 5.1, so that the primary output wheel 5.2 can rotate coaxially with the primary transmission gear 5.1 (coaxial rotation in this invention refers to the rotation axes of two rotating objects being arranged collinearly). Furthermore, the primary output wheel 5.2 is connected to the drill bit shaft 2.1 and drives the drill bit shaft 2.1 to rotate. For example, the primary output wheel 5.2 can be directly connected to the drill bit shaft 2.1 by means of a screw or coupling, so that the rotation of the primary output wheel 5.2 can drive the drill bit shaft 2.1 to rotate synchronously.

[0086] Meanwhile, the first-stage output wheel 5.2 has a side facing the first-stage transmission gear 5.1, on which a plurality of first-stage planetary gear connecting posts 5.21 are raised. The plurality of first-stage planetary gear connecting posts 5.21 are arranged at intervals around the first-stage transmission gear 5.1, and a first-stage planetary gear 5.3 is rotatably connected to each first-stage planetary gear connecting post 5.21. The plurality of first-stage planetary gears 5.3 are distributed at intervals around the first-stage transmission gear 5.1, and each first-stage planetary gear 5.3 is meshed with the first-stage transmission gear 5.1.

[0087] The first-stage positioning gear ring 5.4 is an annular sleeve fixed to the grip handle 1 and surrounding the first-stage transmission gear 5.1. Several first-stage planetary gears 5.3 are placed inside the first-stage positioning gear ring 5.4, and each first-stage planetary gear 5.3 is meshed with the inner wall of the first-stage positioning gear ring 5.4.

[0088] Thus, when the power output shaft 4.1 rotates, it synchronously drives the primary transmission gear 5.1 to rotate. The primary transmission gear 5.1 drives several primary planetary gears 5.3 to rotate through meshing transmission. Under the action of the primary positioning gear ring 5.4, the several primary planetary gears 5.3 synchronously revolve around the primary transmission gear 5.1, thereby driving the primary output wheel 5.2 to rotate, so as to drive the drill bit shaft 2.1 to rotate and carry out hole excavation operations.

[0089] The quantity of several first-stage planetary gears 5.3 is set according to requirements, for example, as shown in the attached... Figure 5 As shown, there can be five first-stage planetary gears 5.3. Regardless of the number of first-stage planetary gears 5.3, they are evenly distributed around the outer periphery of the first-stage transmission gear 5.1.

[0090] Moreover, in this embodiment, the handle 1 is hollow inside, and the drive motor 4 and the first-stage reduction structure (including: first-stage transmission gear 5.1, first-stage output wheel 5.2, first-stage planetary gear 5.3 and first-stage positioning gear ring 5.4) are preferably housed inside the handle 1 so that they can be wrapped and protected.

[0091] Alternatively, planetary reduction gear 5 can also be a single-stage plus two-stage transmission structure with a larger reduction ratio.

[0092] For example, attached Figure 6 and attached Figure 7 As shown, based on the aforementioned primary reduction structure, the planetary reduction gear 5 in this embodiment further includes a secondary reduction structure positioned between the primary output wheel 5.2 and the drill bit shaft 2.1. The primary output wheel 5.2 is connected to the drill bit shaft 2.1 via this secondary reduction structure, thereby transmitting the rotation of the primary output wheel 5.2 to the drill bit shaft 2.1 in a decelerated manner. The primary and secondary reduction structures together constitute the planetary reduction gear 5, a multi-stage planetary reduction structure.

[0093] Specifically, the two-stage reduction structure includes: a two-stage transmission gear 5.5, a two-stage output wheel 5.6, a two-stage planetary gear 5.7, and a two-stage positioning gear ring 5.8.

[0094] Among them, the secondary transmission gear 5.5 is a gear structure that is raised on one side wall of the primary output wheel 5.2 facing away from the power output shaft 4.1 and rotates coaxially with the primary output wheel 5.2.

[0095] The secondary output wheel 5.6 is rotatably connected to the grip handle 1, and the rotation axis of the secondary output wheel 5.6 is collinear with the rotation axis of the secondary transmission gear 5.5, so that the secondary output wheel 5.6 can rotate coaxially with the secondary transmission gear 5.5 (coaxial rotation in this invention refers to the rotation axes of two rotating objects being arranged collinearly). Furthermore, the secondary output wheel 5.6 is connected to the drill bit shaft 2.1 and drives the drill bit shaft 2.1 to rotate. For example, the secondary output wheel 5.6 can be directly connected to the drill bit shaft 2.1 via a structure such as a screw or coupling, so that the rotation of the secondary output wheel 5.6 can drive the drill bit shaft 2.1 to rotate synchronously.

[0096] Meanwhile, the secondary output wheel 5.6 has a side facing the secondary transmission gear 5.5, on which a plurality of secondary planetary gear connecting posts 5.61 are raised. The plurality of secondary planetary gear connecting posts 5.61 are arranged at intervals around the secondary transmission gear 5.5, and a secondary planetary gear 5.7 is rotatably connected to each secondary planetary gear connecting post 5.61. The plurality of secondary planetary gears 5.7 are distributed at intervals around the secondary transmission gear 5.5, and each secondary planetary gear 5.7 is meshed with the secondary transmission gear 5.5.

[0097] The secondary positioning gear ring 5.8 is an annular sleeve fixed to the grip handle 1 and surrounding the secondary transmission gear 5.5. Several secondary planetary gears 5.7 are placed inside the secondary positioning gear ring 5.8, and each secondary planetary gear 5.7 is meshed with the inner wall of the secondary positioning gear ring 5.8.

[0098] Thus, when the power output shaft 4.1 rotates as described above, thereby driving the first-stage output wheel 5.2 to rotate, it synchronously drives the second-stage transmission gear 5.5 to rotate. The second-stage transmission gear 5.5 drives several second-stage planetary gears 5.7 to rotate through meshing transmission. Under the action of the second-stage positioning gear ring 5.8, the several second-stage planetary gears 5.7 synchronously revolve around the second-stage transmission gear 5.5, thereby driving the second-stage output wheel 5.6 to rotate, so as to drive the drill bit shaft 2.1 to rotate and carry out hole excavation operations.

[0099] The quantity of several secondary planetary gears 5.7 is set according to requirements, for example, attached... Figure 5 As shown, there can be five secondary planetary gears 5.7. Regardless of the number of secondary planetary gears 5.7, they are evenly distributed around the outer periphery of the secondary transmission gear 5.5.

[0100] Moreover, in this embodiment, the handle 1 is hollow inside. When the drive motor 4 and the first-stage reduction structure are both housed inside the handle 1, the second-stage reduction structure (including: second-stage transmission gear 5.5, second-stage output wheel 5.6, second-stage planetary gear 5.7 and second-stage positioning gear ring 5.8) is also preferably housed inside the handle 1 so that it can be wrapped and protected.

[0101] Furthermore, regardless of whether the planetary reduction assembly 5 is equipped with a single-stage or multi-stage deceleration structure, as shown in the attached... Figure 8As shown, a flange portion 5.11 can also be formed protrudingly on the outer edge of the primary transmission gear 5.1. The flange portion 5.11 has a side wall facing away from the primary planetary gear 5.3. A plurality of supporting planetary gear connecting posts 5.12 are provided on the side wall. The plurality of supporting planetary gear connecting posts 5.12 are spaced apart around the power output shaft 4.1, and each supporting planetary gear connecting post 5.12 is rotatably connected to a supporting planetary gear 6. A plurality of supporting planetary gears 6 are provided, and the plurality of supporting planetary gears 6 are spaced apart around the power output shaft 4.1.

[0102] Meanwhile, the grip handle 1 is also fixedly connected to a ring-shaped support positioning gear ring 7 that surrounds the power output shaft 4.1. Several support planetary gears 6 are placed inside the support positioning gear ring 7, and each support planetary gear 6 is meshed with the inner wall of the support positioning gear ring 7. The support positioning gear ring 7 is housed together with the planetary reduction assembly 5 inside the grip handle 1.

[0103] Furthermore, one end of the grip handle 1 may also be provided with a baffle 3.1, which completely blocks the drill bit 2 in the direction from the grip handle 1 to the drill bit 2. The baffle 3.1 may be a plate independent of the scraper plate 3, and may be fixed to the grip handle 1 by means of, for example, a snap-fit ​​structure. Alternatively, the baffle 3.1 may be integrally formed with the scraper plate 3, so that the scraper plate 3 can be fixedly connected by connecting the baffle 3.1 part to the grip handle 1.

[0104] Among them, as attached Figure 1 To be continued Figure 3 As shown, the shovel plate 3 can be a plate structure made of metal or a hard material similar to metal, so that it can be directly inserted into the ground for excavation operations while bearing drill cuttings.

[0105] Or, for example, appendix Figure 9 As shown, the shovel plate 3 can also be a plate or kit made of soft materials such as rubber or silicone. When the drill bit 2 is digging as described above, it can block the drill cuttings such as soil generated by the drill bit 2, preventing the drill cuttings from falling into the excavated hole and also preventing the drill cuttings from splashing everywhere.

[0106] When the scraper plate 3 is a plate or kit made of soft materials such as rubber or silicone, a number of chip-holding grooves 3.2 can be formed on the side of the scraper plate 3 facing the drill bit 2 to accommodate drill chips and prevent the drill chips from sliding off.

[0107] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of the present utility model, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" in the description should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model according to the specific circumstances.

[0108] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A handheld drilling rig, characterized in that, include: A grip handle (1), and a drill bit (2) and a scraper plate (3) connected to one end of the grip handle (1), the scraper plate (3) being positioned on one side of the drill bit (2) and having a structure for bearing drill cuttings; The grip handle (1) is connected to a drive motor (4), which has a power output shaft (4.1) for outputting rotational force. The power output shaft (4.1) is connected to the drill bit (2) to drive the drill bit (2) to rotate.

2. The handheld drilling rig according to claim 1, characterized in that: The power output shaft (4.1) is connected to the drill bit shaft (2.1) of the drill bit (2) via a planetary reduction gear (5). The planetary reduction gear (5) is a planetary gear transmission structure that reduces the rotation of the power output shaft (4.1) and transmits it to the drill bit shaft (2.1).

3. The handheld drilling rig according to claim 2, characterized in that: The planetary deceleration assembly (5) includes a first-stage deceleration structure, which includes: A primary transmission gear (5.1) is fixed to the power output shaft (4.1) and rotates coaxially with the power output shaft (4.1). A primary output wheel (5.2) is rotatably connected to the grip handle (1) and rotates coaxially with the primary transmission gear (5.1). The primary output wheel (5.2) is connected to the drill bit shaft (2.1) and grounded, driving the drill bit shaft (2.1) to rotate. A plurality of first-stage planetary gears (5.3) are rotatably connected to the first-stage output wheel (5.2). The plurality of first-stage planetary gears (5.3) are distributed at intervals around the first-stage transmission gear (5.1), and each first-stage planetary gear (5.3) is meshed with the first-stage transmission gear (5.1). A primary positioning gear ring (5.4) is fixed to the grip handle (1) and surrounds the primary transmission gear (5.1). Several primary planetary gears (5.3) are placed inside the primary positioning gear ring (5.4), and each primary planetary gear (5.3) meshes with the inner wall of the primary positioning gear ring (5.4).

4. The handheld drilling rig according to claim 3, characterized in that: Several of the first-stage planetary gears (5.3) are evenly distributed around the outer periphery of the first-stage transmission gear (5.1).

5. The handheld drilling rig according to claim 3, characterized in that: The planetary reduction gear (5) further includes a secondary reduction structure placed between the primary output wheel (5.2) and the drill bit shaft (2.1); The first-stage output wheel (5.2) is connected to the drill bit shaft (2.1) through the second-stage reduction structure to reduce the rotation of the first-stage output wheel (5.2) and transmit it to the drill bit shaft (2.1).

6. The handheld drilling rig according to claim 5, characterized in that: The two-stage deceleration structure includes: The secondary transmission gear (5.5) is disposed on the side wall of the primary output wheel (5.2) facing away from the power output shaft (4.1) and rotates coaxially with the primary output wheel (5.2). A secondary output wheel (5.6) is rotatably connected to the grip handle (1) and rotates coaxially with the primary transmission gear (5.1). The secondary output wheel (5.6) is connected to the drill bit shaft (2.1) and grounded, driving the drill bit shaft (2.1) to rotate. The secondary planetary gear (5.7) is rotatably connected to the secondary output wheel (5.6). There are multiple secondary planetary gears (5.7) arranged around the secondary transmission gear (5.5) at intervals, and each secondary planetary gear (5.7) meshes with the secondary transmission gear (5.5). A secondary positioning gear ring (5.8) is fixed to the grip handle (1) and surrounds the secondary transmission gear (5.5). Several secondary planetary gears (5.7) are placed inside the secondary positioning gear ring (5.8), and each secondary planetary gear (5.7) meshes with the inner wall of the secondary positioning gear ring (5.8).

7. The handheld drilling device according to any one of claims 3 to 6, characterized in that: A supporting planetary gear (6) is rotatably connected to the primary transmission gear (5.1) between the primary transmission gear (5.1) and the drive motor (4). Multiple supporting planetary gears (6) are provided, and the multiple supporting planetary gears (6) are distributed at intervals around the power output shaft (4.1); The grip handle (1) is fixedly connected to a support positioning gear ring (7) that surrounds the power output shaft (4.1). Several of the supporting planetary gears (6) are placed inside the supporting positioning gear ring (7), and each of the supporting planetary gears (6) is meshed with the inner wall of the supporting positioning gear ring (7).

8. The handheld drilling device according to any one of claims 2 to 6, characterized in that: The length of the protrusion of the drill bit (2) at one end of the grip handle (1) is greater than the length of the protrusion of the shovel plate (3) at one end of the grip handle (1).

9. The handheld drilling device according to any one of claims 2 to 6, characterized in that: The grip handle (1) includes: a storage housing part (1.1) connected to the planetary deceleration assembly (5), and a grip housing part (1.2) for gripping and applying force. The drill bit (2) and the gripping housing (1.2) are respectively placed at both ends of the housing (1.1), and the extension direction of the gripping housing (1.2) is set at an angle to the extension direction of the drill bit shaft (2.1): there is a force-applying angle A between the drill bit shaft (2.1) and the gripping housing (1.2).

10. The handheld drilling rig according to claim 1, characterized in that: A battery (8) is also connected to the grip handle (1), which is electrically connected to the drive motor (4) to supply power to the drive motor (4).

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