Ratchet wrench capable of being rapidly assembled
By designing structures such as guide grooves, limit blocks and control sleeves in the ratchet wrench, we can quickly replace different types of wrench heads, solving the problem of difficulty in replacing existing ratchet wrench, and improving the efficiency of the tool usage and storage convenience.
Patent Information
- Application Number
- CN202421900959.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-07
AI Technical Summary
Existing ratchet wrenches are difficult to replace quickly when different types of wrench heads need to be replaced, resulting in increased tool weight and excessive storage space.
A ratchet wrench including a handle and a wrench head is designed. The handle is equipped with a guide groove and a limiting block, and the wrench head is equipped with a limiting groove outside the wrench head. The function of quickly changing the wrench head is achieved through the coordination of the control sleeve, magnetic ring and limiting groove.
The rapid replacement of different types of ratchet wrench heads is achieved, reducing the weight of the tool and the storage space, and improving the efficiency of use.
Smart Images
Figure CN222857832U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ratchet wrenches, in particular to a ratchet wrench which can be assembled quickly. Background Art
[0002] A ratchet wrench is a manual bolt tightening tool. A conventional wrench is turned as many times as it is rotated, or the wrench needs to be removed and put back on the bolt after being turned a certain angle. However, a ratchet wrench is different. A ratchet wrench can achieve one-way torque transmission through the ratchet pawl structure, so it can be rotated back and forth to tighten or loosen the bolt.
[0003] Although the existing ratchet wrenches can replace sockets of different sizes within a certain range, other types of wrench heads may be needed in some other situations. For example, when high precision is required, a ratchet with denser and smaller teeth is needed, when large torque is required, a ratchet with larger teeth is needed, or when the socket sizes are very different, the wrench head cannot drive or cannot be assembled. These situations require different types of wrench heads, and the wrench head is usually fixed to the handle of the wrench. If different types of ratchet wrenches are purchased, the storage space will increase a lot due to the presence of the slender handle, and the tool will also be heavier due to the weight of the handle during carrying. Utility Model Content
[0004] Based on this, the purpose of the utility model is to provide a ratchet wrench that can be quickly assembled to solve the technical problems mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ratchet wrench that can be quickly assembled, comprising a handle and a wrench head, the outer surface and the back of the wrench head are provided with limit grooves, the handle is provided with a guide groove, and a limit block is arranged inside the guide groove, a magnetic ring is installed on the inner wall of the handle, and the outer surface of the handle is connected to a control sleeve.
[0006] By adopting the above technical solution, when it is necessary to replace other types of wrench heads, the operating sleeve is pulled down with force, and the friction force is increased by the wavy texture on the surface of the operating sleeve. After the operating sleeve moves down, it no longer presses against the limit block. At this time, the wrench head can be directly pulled out from the handle, and the wrench head can automatically push the limit block open; insert a new wrench head into the handle, at this time the limit block corresponds to the limit groove, and then stop pulling the operating sleeve, and the magnetic attraction of the magnetic ring causes the operating sleeve to move up and be limited, and the operating sleeve presses against the limit block so that the limit block enters the limit groove. At this time, when the wrench head is pulled out, it cannot move because the limit groove is pressed by the operating sleeve, and the limit block cannot push open the operating sleeve, thereby limiting the wrench head and preventing it from falling off.
[0007] Furthermore, the cross sections of the guide groove and the limit block are both in a cross shape, and the limit block is slidably connected to the guide groove.
[0008] By adopting the above technical solution, when the user pulls the wrench head out of the handle, the wrench head can automatically push open the limit block, and the setting of the guide groove not only facilitates the rotation of the limit block, but also limits the position of the limit block to prevent it from falling off.
[0009] Furthermore, the limit block is detachably connected to the limit groove, and the operating sleeve is in contact with the limit block.
[0010] By adopting the above technical solution, the operating sleeve no longer presses against the limit block after moving downward. At this time, the user can directly pull the wrench head out of the handle with his other hand, and the wrench head can automatically push the limit block open.
[0011] Furthermore, the surface of the control sleeve is wavy, and the control sleeve is slidably connected to the handle.
[0012] By adopting the above technical solution, the friction between the user's hand and the control sleeve is increased by the wavy texture on the surface of the control sleeve.
[0013] Furthermore, two protrusions are arranged above the outer surface of the handle, and the operating sleeve abuts against the two protrusions.
[0014] By adopting the above technical solution, the control sleeve is limited by two protrusions arranged above the outer surface of the handle, thereby preventing the control sleeve from falling off the handle.
[0015] Furthermore, a handle is connected to the bottom of the handle, and a wrench head passes through the top of the handle. A cover plate is connected to the outer surface of the wrench head, and a screw is connected between the cover plate and the wrench head.
[0016] By adopting the above technical solution, when the pawl, the connector, the ratchet, the first spring and the reset ball are damaged and need to be replaced, the user can remove the screws to disassemble the cover plate, thereby facilitating the removal of the internal parts of the wrench head for replacement.
[0017] Furthermore, a pawl and a connecting head are respectively connected inside the wrench head, and an adjusting piece is connected to the back of the pawl, a ratchet is sleeved on the outside of the connecting head, a second spring is connected inside the connecting head, and a limiting ball is connected to one end of the second spring, a first spring is connected at the bottom inside the wrench head, and a reset ball is connected to the top of the first spring.
[0018] By adopting the above technical solution, the user puts the sleeve on the outside of the connecting head, and limits the sleeve by the second spring and the limiting ball to prevent the sleeve from falling off. Then the user can put the sleeve connected to the ratchet wrench on the hexagonal end of the bolt. Then the user turns the handle, the handle drives the pawl to rotate, the pawl and the ratchet wheel abut against each other to drive the ratchet wheel to rotate, so that the connecting head drives the sleeve to rotate, and then rotates the bolt; when the user turns the handle in the opposite direction, the pawl is pushed open by the ratchet wheel, thereby preventing the ratchet wrench from driving the bolt to reverse, and then the pawl is reset by the first spring and the reset ball to hold the pawl; when torque needs to be applied in another direction, the user turns the adjusting piece to change the direction of the pawl, thereby facilitating the ratchet wrench to apply torque in another direction.
[0019] Furthermore, a high-strength screw is fixed in the middle of the top of the handle, and the high-strength screw is threadedly connected to the handle.
[0020] By adopting the above technical solution, the high-strength screw is rotated by grasping the handle to limit the position and then turning the handle. After the high-strength screw is rotated, it extends out of the handle, thereby relatively extending the length of the handle and facilitating operation in narrow and long spaces.
[0021] In summary, the utility model mainly has the following beneficial effects:
[0022] The utility model provides the operating sleeve, the guide groove, the limit block, the magnetic ring and the limit groove. When it is necessary to replace the spanner head of another type, the operating sleeve is pulled down with force. At the same time, the friction force is increased by the wavy lines on the surface of the operating sleeve. After the operating sleeve moves down, it no longer presses against the limit block. At this time, the spanner head can be directly pulled out of the handle, and the spanner head can automatically push the limit block open. A new spanner head is inserted into the interior of the handle. At this time, the limit block corresponds to the limit groove, and then the operating sleeve is stopped from being pulled up. The magnetic attraction of the magnetic ring causes the operating sleeve to move up and be limited, and the operating sleeve presses against the limit block so that the limit block enters the limit groove. At this time, the spanner head is pulled out because the limit groove is pressed by the operating sleeve and cannot be moved, and the limit block cannot push open the operating sleeve, thereby limiting the spanner head and preventing it from falling off. Different types of ratchet spanner heads can be quickly and conveniently replaced. Only various types of spanner heads need to be carried, and other handles are not needed to reduce storage space occupation and carrying weight. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the structure of the utility model;
[0024] Figure 2 It is a schematic diagram of the side section structure of the utility model;
[0025] Figure 3 For the utility model Figure 2 A magnified view of the structure at A;
[0026] Figure 4This is a schematic diagram of the explosion structure of the wrench head of the utility model;
[0027] Figure 5 This is a schematic diagram of the high-strength screw structure of the utility model.
[0028] In the figure: 1. handle; 2. handle; 3. spanner head; 4. cover plate; 5. ratchet; 6. adjusting piece; 7. screw; 8. first spring; 9. reset ball; 10. connector; 11. second spring; 12. limit ball; 13. ratchet; 14. operating sleeve; 15. guide groove; 16. limit block; 17. magnetic ring; 18. limit groove; 19. high-strength screw. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0030] The following describes an embodiment of the utility model based on its overall structure.
[0031] Embodiment 1:
[0032] A ratchet wrench that can be assembled quickly, such as Figure 1-Figure 4 As shown, it includes a handle 1 and a wrench head 3, the outer surface and the back of the wrench head 3 are provided with a limit groove 18, the handle 1 is provided with a guide groove 15, the guide groove 15 is provided with a limit block 16, the guide groove 15 and the limit block 16 are both in a "cross" shape in cross section, the limit block 16 is slidably connected to the guide groove 15, the limit block 16 is detachably connected to the limit groove 18, a magnetic ring 17 is installed on the inner wall of the handle 1, the outer surface of the handle 1 is connected to a control sleeve 14, the surface of the control sleeve 14 is wavy, the control sleeve 14 is slidably connected to the handle 1, the control sleeve 14 abuts against the limit block 16, two protrusions are provided above the outer surface of the handle 1, and the control sleeve 14 abuts against the two protrusions.
[0033] See also Figure 1-Figure 5In the above embodiment, a handle 2 is connected to the bottom of the handle 1, and a wrench head 3 passes through the top of the handle 1, which is convenient for replacement; a cover plate 4 is connected to the outer surface of the wrench head 3, and a screw 7 is connected between the cover plate 4 and the wrench head 3. After removing the cover plate 4, it is convenient to repair and replace the internal parts of the wrench head 3; a ratchet 5 and a connector 10 are respectively connected to the inside of the wrench head 3, and an adjusting member 6 is connected to the back of the ratchet 5. When it is necessary to apply torque in another direction, the user rotates the adjusting member 6 to change the direction of the ratchet 5, so that the ratchet 13 wrench can apply torque in another direction; A ratchet 13 is sleeved on the outside of the connecting head 10. When the user rotates the handle 1, the handle 1 drives the pawl 5 to rotate. The pawl 5 abuts against the ratchet 13 and drives the ratchet 13 to rotate, so that the connecting head 10 drives the sleeve to rotate; a second spring 11 is connected to the inside of the connecting head 10, and one end of the second spring 11 is connected to a limiting ball 12. The sleeve is limited by the second spring 11 and the limiting ball 12 to prevent the sleeve from falling off; a first spring 8 is connected to the bottom of the wrench head 3, and a reset ball 9 is connected to the top of the first spring 8. The first spring 8 cooperates with the reset ball 9 to support the pawl 5 to reset the pawl 5.
[0034] Embodiment 2:
[0035] On the basis of the above-mentioned embodiment 1, in order to solve the problem that the handle 1 cannot be operated in a narrow and long space due to its shortness, the following configuration is adopted.
[0036] See also Figure 2 and Figure 5 In the above embodiment, a high-strength screw 19 is fixed in the middle of the top of the handle 2, and the high-strength screw 19 is threadedly connected to the handle 1. The high-strength screw 19 is rotated by grasping the handle 1 to limit the position and then rotating the handle 2. After the high-strength screw 19 rotates, it extends from the handle 1, thereby relatively extending the length of the handle 1, which is convenient for operation in narrow and long spaces.
[0037] The implementation principle of the utility model is as follows: first, when the user needs to replace the spanner head 3 of another type, the user pulls down the operating sleeve 14 with one hand and grabs the handle 1. At the same time, the wavy texture on the surface of the operating sleeve 14 increases the friction between the user's hand and the operating sleeve 14. After the operating sleeve 14 moves down, it no longer presses against the limit block 16. At this time, the user can directly pull the spanner head 3 from the handle 1 with the other hand, and the spanner head 3 can automatically push the limit block 16 away. The setting of the guide groove 15 is convenient for the limit block 16 to rotate and can also adjust the limit block 16. 6 to prevent the limit block 16 from falling off; then the user inserts a new wrench head 3 into the handle 1 with the other hand, at which time the limit block 16 corresponds to the limit groove 18, and then the user stops pulling the operating sleeve 14, and the operating sleeve 14 is moved up and limited by the magnetic attraction of the magnetic ring 17, and the operating sleeve 14 presses against the limit block 16 so that the limit block 16 enters the limit groove 18. At this time, the wrench head 3 is pulled out because the limit groove 18 is pressed by the operating sleeve 14 and cannot be moved, and the limit block 16 cannot push open the operating sleeve 14, thereby limiting the wrench head 3 to prevent the wrench head 3 from falling off;
[0038] The user puts the sleeve on the outside of the connecting head 10, and limits the sleeve by the second spring 11 and the limiting ball 12 to prevent the sleeve from falling off. Then the user can put the sleeve connected to the ratchet 13 wrench on the hexagonal end of the bolt. Then the user turns the handle 1, and the handle 1 drives the pawl 5 to rotate. The pawl 5 and the ratchet 13 are abutted against each other to drive the ratchet 13 to rotate, so that the connecting head 10 drives the sleeve to rotate, and then the bolt is rotated; when the user turns the handle 1 in the opposite direction, the pawl 5 is pushed open by the ratchet 13, thereby preventing the ratchet 13 wrench from driving the bolt to reverse, and then the pawl 5 is pushed back by the first spring 8 and the reset ball 9 to reset the pawl 5; when torque needs to be applied in another direction, the user turns the adjusting member 6 to change the direction of the pawl 5, thereby facilitating the ratchet 13 wrench to apply torque in another direction.
[0039] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.
Claims
1. A ratchet wrench capable of rapid assembly, comprising a handle (1) and a wrench head (3), characterized in that: The outer surface and back of the wrench head (3) are provided with a limit groove (18), the handle (1) is provided with a guide groove (15), and a limit block (16) is arranged inside the guide groove (15), a magnetic ring (17) is installed on the inner wall of the handle (1), and the outer surface of the handle (1) is connected to a control sleeve (14).
2. The ratchet wrench capable of quick assembly according to claim 1, characterized in that: The guide groove (15) and the limit block (16) both have cross-shaped cross sections, and the limit block (16) is slidably connected to the guide groove (15).
3. The ratchet wrench capable of quick assembly according to claim 2, characterized in that: The limiting block (16) is detachably connected to the limiting groove (18), and the operating sleeve (14) is in abutment with the limiting block (16).
4. The ratchet wrench capable of rapid assembly according to claim 3, characterized in that: The surface of the control sleeve (14) is wavy, and the control sleeve (14) is slidably connected to the handle (1).
5. The ratchet wrench capable of rapid assembly according to claim 4, characterized in that: Two protrusions are arranged on the outer surface of the handle (1), and the operating sleeve (14) abuts against the two protrusions.
6. The ratchet wrench capable of rapid assembly according to claim 1, characterized in that: The bottom of the handle (1) is connected to a grip (2), and a wrench head (3) passes through the top of the handle (1). The outer surface of the wrench head (3) is connected to a cover plate (4), and a screw (7) is connected between the cover plate (4) and the wrench head (3).
7. The ratchet wrench capable of rapid assembly according to claim 6, characterized in that: The wrench head (3) is internally connected with a pawl (5) and a connecting head (10), and the back of the pawl (5) is connected with an adjusting member (6). The connecting head (10) is externally sleeved with a ratchet (13). The connecting head (10) is internally connected with a second spring (11), and one end of the second spring (11) is connected with a limiting ball (12). The wrench head (3) is internally connected with a first spring (8) at the bottom, and the top of the first spring (8) is connected with a reset ball (9).
8. The ratchet wrench capable of rapid assembly according to claim 6, characterized in that: A high-strength screw rod (19) is fixed in the middle of the top of the handle (2), and the high-strength screw rod (19) is threadedly connected to the handle (1).