A reverse rotation prevention gear locking device for electric drill

Abstract

The utility model discloses a gear locking device technical field's a kind of anti-reverse gear locking device for electric drill, including gear body, connecting piece and shaft body, the connecting piece is fixedly connected in the front lateral wall of the gear body, the shaft body is inserted between the inner cavity of the gear body and the connecting piece, the inside wall both sides of the gear body are provided with clamping groove, the front lateral wall of the connecting piece is fixedly connected with connecting pipe, the outside wall of the connecting pipe is screwed with the sleeve, the outside wall both sides of the shaft body are welded with clamping block, the clamping block is made of stainless steel material, the anti-reverse gear locking device for electric drill, structure design is reasonable, avoid the reverse and perpendicular loose when shaft body and gear body connect, so that clamping groove and clamping block are connected closely, reduce abrasion.

Description

Technical Field

[0001] This utility model relates to the technical field of gear locking devices, specifically an anti-reverse gear locking device for electric drills. Background Technology

[0002] Plastic gears for electric drills are specialized components adapted to the power transmission system of electric drills. Their design needs to precisely match the torque output and speed adjustment requirements of various working conditions such as drilling and screwing, taking into account both power performance and operational practicality. They are used to convert the high speed and low torque of the motor into low speed and high torque suitable for drilling operations. Helical cylindrical gears have good meshing performance, low noise, and smooth operation. Although there is axial force, the axial force can be reduced by reasonably designing the inclination angle of the teeth (generally 12°). They are widely used in electric drills.

[0003] When existing electric drill plastic gears are connected to the shaft, prolonged connection can lead to loosening and reverse rotation between the gear and the shaft. To address this, we propose an anti-reverse gear locking device for electric drills. Summary of the Invention

[0004] The purpose of this utility model is to provide an anti-reverse gear locking device for electric drills, so as to solve the problem mentioned in the background art that when existing plastic gears for electric drills are connected to the shaft, the gears and shafts become loose and reverse after a long period of connection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-reverse gear locking device for an electric drill, comprising a gear body, a connector, and a shaft. The connector is fixedly connected to the front side wall of the gear body, and the shaft is inserted between the inner cavity of the gear body and the connector. The inner side wall of the gear body has slots on both sides. The front side wall of the connector is fixedly connected to a connecting pipe, and the outer side wall of the connecting pipe is screwed with a threaded sleeve. The outer side wall of the shaft is welded with locking blocks, and the locking blocks are made of stainless steel.

[0006] As a further description of the above technical solution: There are two card slots, which are rectangular in shape and symmetrically distributed.

[0007] As a further description of the above technical solution: The outer wall of the connecting pipe has three fixing grooves that are evenly distributed.

[0008] As a further description of the above technical solution: The outer side of the fixing groove has an external thread, and the inner side of the connecting pipe has a clamping block.

[0009] As a further description of the above technical solution: The clamping blocks are arc-shaped and are located between each pair of the fixing slots.

[0010] As a further description of the above technical solution: The inner wall of the clamping block is fixedly connected with protrusions, which are evenly distributed and made of rubber.

[0011] As a further description of the above technical solution: An elastic element, which is a spring, is fixedly connected to the rear side wall of the card block.

[0012] As a further description of the above technical solution: The top and bottom of the card block are fixedly connected to a connecting block, which is arc-shaped and made of rubber.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The anti-reverse gear locking device for this electric drill is connected by a slot and a block inside the gear body. A connector is provided with an external thread and a fixing groove on the outer wall of the connector. When the threaded sleeve is screwed into the outer wall of the connector, the connector clamps the shaft inward. With the cooperation of the slot and the block, the shaft is prevented from reversing or becoming vertically loose when connected to the gear body.

[0014] This electric drill uses an anti-reverse gear locking device. By setting an elastic element and a connecting block on the chuck, the elastic element is pre-tightened, and the connecting block, made of rubber, deforms during compression to fill the gap in the chuck groove, making the connection between the chuck groove and the chuck block tight and reducing wear. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the gear body structure of an anti-reverse gear locking device for an electric drill proposed in this utility model; Figure 2 This is a schematic diagram of the connecting pipe structure of an anti-reverse gear locking device for an electric drill proposed in this utility model; Figure 3 This is a schematic diagram of the screw sleeve structure of an anti-reverse gear locking device for electric drills proposed in this utility model; Figure 4 This is a schematic diagram of the shaft structure of an anti-reverse gear locking device for an electric drill proposed in this utility model.

[0016] In the diagram: 100, gear body; 110, slot; 200, connector; 210, connecting pipe; 220, fixing groove; 230, external thread; 240, clamping block; 250, protrusion; 260, threaded sleeve; 300, shaft; 310, clamping block; 320, elastic element; 330, connecting block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] This utility model provides an anti-reverse gear locking device for electric drills, preventing reverse rotation and vertical loosening when the shaft 300 is connected to the gear body 100, ensuring a tight connection between the slot 110 and the block 310, and reducing wear. (See also...) Figure 1-4 It includes a gear body 100, a connecting piece 200, and a shaft 300; Please refer to it again. Figure 1 The gear body 100 has slots 110 on both sides of its inner sidewall. The slots 110 are used to engage with the locking block 310 to axially lock the gear body 100 and the shaft 300.

[0021] Please refer to it again. Figure 2-3The front side wall of the connector 200 is fixedly connected to the connecting pipe 210, and the outer side wall of the connecting pipe 210 is screwed with the threaded sleeve 260. The connector 200 is fixedly connected to the front side wall of the gear body 100. The connector 200 is used to connect the gear body 100 and the connecting pipe 210. The connecting pipe 210 is used to cooperate with the threaded sleeve 260 to wrap and fix the shaft 300.

[0022] Please refer to it again. Figure 4 The shaft 300 has two locking blocks 310 welded on both sides of its outer side wall. The locking blocks 310 are made of stainless steel. The shaft 300 is inserted between the gear body 100 and the inner cavity of the connector 200. The locking blocks 310 are used to lock into the slot 110.

[0023] In summary: By setting a slot 110 and a block 310 inside the gear body 100 for connection, and by setting a connector 200 with an external thread 230 and a fixing groove 220 on its outer wall, when the threaded sleeve 260 is screwed to the outer wall of the connector 200, the connector 200 clamps the shaft 300 inward, which, in conjunction with the slot 110 and the block 310, prevents the shaft 300 from reversing or becoming vertically loose when connected to the gear body 100.

[0024] Please refer to it again. Figure 1 There are two card slots 110, which are rectangular in shape and symmetrically distributed.

[0025] Please refer to it again. Figure 2 The outer wall of the connecting pipe 210 has a fixing groove 220. There are three fixing grooves 220, which are evenly distributed.

[0026] Please refer to it again. Figure 2 The outer side of the fixed groove 220 has an external thread 230, and the inner side of the connecting pipe 210 has a clamping block 240.

[0027] Please refer to it again. Figure 2 The clamping block 240 is arc-shaped and is located between each pair of fixing slots 220.

[0028] Please refer to it again. Figure 2 The inner wall of the clamping block 240 is fixedly connected with a protrusion 250, and the protrusion 250 is evenly distributed and made of rubber.

[0029] Please refer to it again. Figure 4 An elastic element 320, which is a spring, is fixedly connected to the rear side wall of the locking block 310.

[0030] Please refer to it again. Figure 4 The top and bottom of the card block 310 are fixedly connected to the connecting block 330, which is arc-shaped and made of rubber.

[0031] In summary: by setting an elastic element 320 and a connecting block 330 on the card block 310, the elastic element 320 is pre-tightened, and the connecting block 330, made of rubber material, deforms during compression to fill the gap in the card slot 110, so that the card slot 110 and the card block 310 are tightly connected, reducing wear.

[0032] In practical use, those skilled in the art pass the shaft 300 through the inner cavity of the connecting pipe 210 and the gear body 100, so that the locking block 310 is inserted into the locking groove 110, so that the elastic element 320 is compressed, and the threaded sleeve 260 is screwed into the connecting pipe 210. By rotating the threaded sleeve 260, the clamping block 240 clamps the outer wall of the shaft 300.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] 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 reverse gear locking device for an electric drill, characterized in that: The gear body (100), the connector (200), and the shaft (300) are included. The connector (200) is fixedly connected to the front side wall of the gear body (100). The shaft (300) is inserted between the inner cavity of the gear body (100) and the connector (200). The inner side wall of the gear body (100) has slots (110) on both sides. The front side wall of the connector (200) is fixedly connected to a connecting pipe (210). The outer side wall of the connecting pipe (210) is screwed with a threaded sleeve (260). The outer side wall of the shaft (300) is welded with a locking block (310). The locking block (310) is made of stainless steel.

2. The anti-reverse gear locking device for an electric drill according to claim 1, characterized in that: There are two card slots (110), which are rectangular in shape and symmetrically distributed.

3. The anti-reverse gear locking device for an electric drill according to claim 1, characterized in that: The outer wall of the connecting pipe (210) has a fixing groove (220), and there are three fixing grooves (220) that are evenly distributed.

4. The anti-reverse gear locking device for an electric drill according to claim 3, characterized in that: The outer side of the fixed groove (220) has an external thread (230), and the inner side of the connecting pipe (210) has a clamping block (240).

5. The anti-reverse gear locking device for an electric drill according to claim 4, characterized in that: The clamping block (240) is arc-shaped and is located between each pair of the fixing groove (220).

6. The anti-reverse gear locking device for an electric drill according to claim 5, characterized in that: The inner wall of the clamping block (240) is fixedly connected with a protrusion (250), and the protrusion (250) is evenly distributed and is made of rubber.

7. The anti-reverse gear locking device for an electric drill according to claim 1, characterized in that: The rear side wall of the card block (310) is fixedly connected to an elastic element (320), which is a spring.

8. The anti-reverse gear locking device for an electric drill according to claim 1, characterized in that: The top and bottom of the card block (310) are fixedly connected to a connecting block (330), the connecting block (330) is arc-shaped and is made of rubber.

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