A folding mechanism

Abstract

The application relates to a folding mechanism applied in the field of handheld electric tools, comprising a machine body, the machine body comprising a first part, a second part and an intermediate part, a rotating center part being arranged on the intermediate part, the first part and the second part being respectively rotationally connected on the rotating center part, the first part and the second part rotating around the rotating center part to realize folding and unfolding of the machine body, and the first part and the second part being respectively located on the two sides of the intermediate part in the folded state. The application has the technical effect that when the handheld electric tool needs to be carried, the first part and the second part can be rotated around the rotating center part and folded, so that they are respectively located on the two sides of the intermediate part. The overall size is greatly reduced, the tool becomes more compact, the occupied space is reduced, and the tool is convenient to store, manage and carry.

Description

Technical Field

[0001] This application relates to the field of handheld power tool technology, and in particular to a folding mechanism. Background Technology

[0002] Handheld power tools are electrically powered tools that can be operated by hand and are widely used in construction, machinery, maintenance, and other fields. Handheld power tools in related technologies are typically designed as a single unit, with all components fixed and integrated, resulting in a relatively regular and uniform overall structure, and their external dimensions are usually not easily altered.

[0003] The aforementioned all-in-one handheld power tools, due to their fixed overall size and shape, lack flexibility in carrying, are inconvenient to carry, and require a large space for storage. Summary of the Invention

[0004] To address the issues of limited flexibility in carrying integrated handheld power tools due to their fixed size and shape, and the need for significant storage space, this application provides a folding mechanism with the following technical solution: The mechanism includes a body comprising a first part, a second part, and a middle part. A rotation center is located on the middle part. The first and second parts are rotatably connected to the rotation center. The first and second parts rotate around the rotation center to fold and unfold the body. In the folded state, the first and second parts are located on either side of the middle part.

[0005] In one specific implementation, the rotating center includes a fixed sleeve disposed on the middle part, a connecting sleeve inserted into the fixed sleeve, a connecting block provided at one end of the fixed sleeve facing the connecting sleeve, and a connecting groove matching the connecting block opened at one end of the connecting sleeve facing the connecting block. The connecting block is partially inserted into the connecting groove, and there is a gap between the connecting block and the bottom of the connecting groove. The connecting sleeve is provided with a first connecting unit connected to the first part and a second connecting unit connected to the second part. The first part and the second part respectively achieve the folding and unfolding of the body by rotating around the connecting sleeve through the first connecting unit and the second connecting unit.

[0006] In one specific implementation scheme, a limiting groove is formed on the surface of the fixed sleeve facing the connecting sleeve, a limiting hole is formed at the bottom of the limiting groove, and a connecting shaft is provided on the surface of the connecting sleeve facing the fixed sleeve, the connecting shaft passing through the limiting hole.

[0007] In one specific implementation, the first connecting unit includes a first guide groove formed on the connecting sleeve, and a first latch is provided on the first part. The first latch is inserted into the first guide groove, and a first locking groove and a second locking groove that match the first latch are connected to the first guide groove. When the first latch is located in the first locking groove, the first part is in an unfolded state, and when the first latch is located in the second locking groove, the first part is in a folded state.

[0008] In one specific implementation, the second connecting unit includes a second guide groove formed on the connecting sleeve, and a second latch is provided on the second part. The second latch is inserted into the second guide groove, and a third locking groove and a fourth locking groove that match the second latch are connected to the second guide groove. When the second latch is located in the third locking groove, the second part is in an unfolded state, and when the second latch is located in the fourth locking groove, the second part is in a folded state.

[0009] In one specific implementation, the fourth locking groove has an inclined guide surface on its groove wall facing the third locking groove.

[0010] In one specific implementation, the second part has a slot that matches the first locking pin, and the end of the second locking pin facing away from the connecting sleeve is inserted into the slot.

[0011] In one specific implementation, the connecting sleeve has a placement groove on its surface facing the fixed sleeve, and an elastic element is provided in the placement groove. The elastic element is sleeved on the outer edge of the connecting shaft and located between the placement groove and the limiting groove.

[0012] In one specific implementation scheme, a cable tray is provided on the surface of the fixing sleeve facing away from the connecting sleeve, and the connecting cable of the machine body passes through the cable tray.

[0013] In one specific implementation, a button is provided on the surface of the connecting sleeve facing away from the fixed sleeve. The button has a pressed state and an unlocked state. When the button is in the pressed state, the connecting block contacts the bottom of the connecting groove.

[0014] In summary, this application has the following beneficial technical effects: when it is necessary to carry a handheld power tool, the first and second parts can be rotated and folded around the rotation center, so that they are located on both sides of the middle part. This significantly reduces the fixed and large overall size of the original one-piece design, making the tool more compact, reducing space occupation, and facilitating storage, management, and carrying. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0016] Figure 2This is a structural schematic diagram used in the embodiments of this application to illustrate the unfolded state of the fuselage.

[0017] Figure 3 This is a schematic diagram illustrating the structure of the rotation center in the embodiments of this application.

[0018] Figure 4 This is a schematic diagram illustrating the structure of the connecting block in the embodiments of this application.

[0019] Figure 5 This is a schematic diagram illustrating the structure of the inclined groove in the embodiments of this application.

[0020] Figure 6 This is a schematic diagram illustrating the structure of the fixing sleeve in the embodiments of this application.

[0021] Figure 7 This is a schematic diagram illustrating the structure of the connecting sleeve in an embodiment of this application.

[0022] Reference numerals: 1. Body; 2. First part; 3. Second part; 4. Middle part; 5. Rotation center part; 6. Fixing sleeve; 7. Connecting sleeve; 8. Connecting block; 9. Connecting groove; 10. Limiting groove; 11. Limiting hole; 12. Connecting shaft; 13. First guide groove; 14. First locking pin; 15. First locking groove; 16. Second locking groove; 17. Inclined guide surface; 18. Second guide groove; 19. Second locking pin; 20. Third locking groove; 21. Fourth locking groove; 22. Slot; 23. Placement groove; 24. Cable groove; 25. Button. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0024] This application discloses a folding mechanism.

[0025] Reference Figure 1 and Figure 2 The folding mechanism includes a body 1, which includes a first part 2, a second part 3, and a middle part 4. In this embodiment, the body 1 is a lithium-ion handheld power tool. The middle part 4 can be the operating handle of the lithium-ion handheld power tool. A rotation center 5 is provided on the middle part 4. The rotation center 5 is located at the connection between the first part 2, the second part 3, and the middle part 4. The first part 2 and the second part 3 are rotatably connected to the rotation center 5. The first part 2 and the second part 3 rotate around the rotation center 5 to realize the folding and unfolding of the body 1. In the folded state, the first part 2 and the second part 3 are located on both sides of the middle part 4. In the unfolded state, the first part 2 and the second part 3 are on the same straight line in the length direction.

[0026] Therefore, when carrying a handheld power tool, the first part 2 and the second part 3 can be rotated and folded around the rotation center 5, so that they are located on both sides of the middle part 4. By achieving the triple folding of the first part 2, the second part 3 and the middle part 4 through a single rotation center 5, the fixed and large overall size of the original one-piece design can be greatly reduced, making the tool more compact, reducing space occupation, and facilitating storage, management and carrying.

[0027] Reference Figure 3 and Figure 4 The rotating center part 5 includes a fixed sleeve 6 disposed on the middle part 4, and a connecting sleeve 7 is inserted into the fixed sleeve 6. In this embodiment, the axes of the fixed sleeve 6 and the connecting sleeve 7 coincide. A plurality of connecting blocks 8 are fixedly connected to one end of the fixed sleeve 6 facing the connecting sleeve 7. A plurality of connecting grooves 9 matching the size of the connecting blocks 8 are opened on one end of the connecting sleeve 7 facing the connecting blocks 8. The connecting blocks 8 are partially inserted into the connecting grooves 9 and there is a gap between the connecting blocks 8 and the bottom of the connecting grooves 9. A first connecting unit connected to the first part 2 and a second connecting unit connected to the second part 3 are provided on the connecting sleeve 7. The first part 2 and the second part 3 realize the folding and unfolding of the body 1 by rotating around the connecting sleeve 7 through the first connecting unit and the second connecting unit, respectively. Therefore, the connecting groove 9 limits the position of the connecting block 8, improving the stability when the fixed sleeve 6 and the connecting sleeve 7 are connected. Since the connecting block 8 is partially inserted into the connecting groove 9 and there is a gap between the connecting block 8 and the bottom of the connecting groove 9, the connecting sleeve 7 can move relative to the fixed sleeve 6 along the axial direction. However, under the limitation of the connecting groove 9 on the connecting groove 9, it is difficult for the connected state and the fixed sleeve 6 to move axially.

[0028] Reference Figure 5 , Figure 6 and Figure 7 A limiting groove 10 is formed on the surface of the fixed sleeve 6 facing the connecting sleeve 7, and a limiting hole 11 is formed at the bottom of the limiting groove 10. A connecting shaft 12 is fixedly connected to the surface of the connecting sleeve 7 facing the fixed sleeve 6. The connecting shaft 12 passes through the limiting hole 11. In this embodiment, the limiting hole 11 plays a limiting role in the movement of the connecting shaft 12, thereby improving the stability of the connecting sleeve 7 when it moves relative to the fixed sleeve 6 along the axial direction.

[0029] Reference Figure 5 , Figure 6 and Figure 7 The connecting sleeve 7 has a placement groove 23 on its surface facing the fixed sleeve 6. An elastic element is provided in the placement groove 23. In this embodiment, the elastic element can be a compression spring. The compression spring is sleeved on the outer edge of the connecting shaft 12 and located between the placement groove 23 and the limiting groove 10. The elastic compression force of the compression spring facilitates the resetting of the connecting sleeve 7.

[0030] Reference Figure 5 , Figure 6 and Figure 7 The first connecting unit includes a first guide groove 13 formed on the connecting sleeve 7, and a first locking pin 14 provided on the first part 2. The first locking pin 14 is inserted into the first guide groove 13. The first guide groove 13 is connected to a first locking groove 15 and a second locking groove 16 that match the size of the first locking pin 14. The first locking groove 15 and the second locking groove 16 are located on the same side of the first guide groove 13. The second connecting unit includes a second guide groove 18 formed on the connecting sleeve 7, and a second locking pin 19 provided on the second part 3. The second part 3 has a groove 22 that matches the size of the second locking pin 19. The end of the first locking pin 14 facing away from the connecting sleeve 7 is inserted into the groove 22. The groove 22 limits the position of the second locking pin 19, realizing a detachable connection between the second locking pin 19 and the groove 22, and the second locking pin 19 and the groove 22 adopt an interference fit. The second locking pin 19 is inserted into the second guide groove 18. The second guide groove 18 has a third locking groove 20 and a fourth locking groove 21, which are sized to match the second locking pin 19. The third locking groove 20 and the fourth locking groove 21 are located on the same side of the second guide groove 18. When the first locking pin 14 is located in the first locking groove 15, the first part 2 is in an unfolded state; when the first locking pin 14 is located in the second locking groove 16, the first part 2 is in a folded state. When the second locking pin 19 is located in the third locking groove 20, the second part 3 is in an unfolded state; when the second locking pin 19 is located in the fourth locking groove 21, the second part 3 is in a folded state.

[0031] Reference Figure 5 , Figure 6 and Figure 7 An inclined guide surface 17 is provided on the groove wall of the fourth locking groove 21 facing the third locking groove 20. The inclined guide surface 17 guides the movement of the second locking pin 19, making it easier for the second locking pin 19 to move from the fourth locking groove 21 to the third guide groove, thereby facilitating the quick switching of the body 1 from the folded state to the unfolded state.

[0032] Reference Figure 5 , Figure 6 and Figure 7Currently, the common folding mechanisms are usually applicable to two-part folding structures. The wiring schemes applicable to two-part folding structures all require a certain length of cable to allow the cable to freely contract and extend during folding. However, the cables of three-part folding mechanisms are connected to each other, and the wiring scheme is more complex. Compared to two-part folding structures, three-part folding mechanisms require more space and longer cables to achieve wiring at the folding center. Two-part folding structures are usually not suitable for use in three-part folding mechanisms where space is limited. Therefore, in this embodiment, a cable tray 24 is provided on the surface of the fixed sleeve 6 facing away from the connecting sleeve 7. The cable tray 24 is set according to the rotation angle of the first part 2 and the second part 3. The fixed sleeve 6 is hollow through the cable tray 24, and the connecting cables of the first part 2, the second part 3 and the middle part 4 can pass through the cable tray 24. The first part 2 and the second part 3 rotate relative to the fixed sleeve 6. The cables of the first part 2 and the second part 3 rotate relative to the fixed sleeve 6, but the cable length remains fixed. Through the cable tray 24, the repeated folding and bending of the cable can be reduced, the life of the wire harness can be improved and the quality requirements of the wire harness can be reduced.

[0033] Reference Figure 5 , Figure 6 and Figure 7 A button 25 is installed on the surface of the connecting sleeve 7 that is away from the fixed sleeve 6. The button 25 is set to a pressed state and an unlocked state. When the button 25 is in the pressed state, the connecting block 8 contacts the bottom of the connecting groove 9. By pressing and releasing the button 25, the body 1 can be folded and unfolded with one click.

[0034] The implementation principle of this application embodiment is as follows: When it is necessary to switch the body 1 to the unfolded state, the operator presses button 25 and rotates the second part 3 at the same time. Button 25 pushes the connecting sleeve 7 to generate displacement, so that the connecting block 8 contacts the bottom of the connecting groove 9. At this time, the first locking pin 14 can slide relative to the first guide groove 13, and the second locking pin 19 can slide relative to the second guide groove 18. When the first locking pin 14 moves into the first locking groove 15 and the second locking pin 19 moves into the third locking groove 20, the operator releases button 25, and the connecting sleeve 7 resets and locks under the action of the elastic element, so that the first locking pin 14 is limited in the first locking groove 15 and the second locking pin 19 is limited in the third locking groove 20. At this time, the first part 2 and the second part 3 are in the unfolded state; conversely, when the first locking pin 14 moves into the second locking groove 16 and the second locking pin 19 moves into the fourth locking groove 21, the first part 2 and the second part 3 are in the folded state.

[0035] The folding and unfolding of the main body 1 can be achieved simply by operating the first part 2, the second part 3, and the middle part 4. To move from the folded to the unfolded state, simply hold the first part 2 and unfold the second part 3, which will then unfold the main body 1. Similarly, to move from the unfolded to the folded state, simply hold the first part 2 and fold the second part 3. The triple folding of the first part 2, the second part 3, and the middle part 4 is achieved by rotating the central part 5, significantly reducing the previously fixed and large overall size of the integrated design. This makes the tool more compact, saving space and making it easier to store, manage, and carry.

[0036] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A folding mechanism, characterized by: The device includes a body (1), which includes a first part (2), a second part (3) and a middle part (4). The middle part (4) is provided with a rotation center part (5). The first part (2) and the second part (3) are rotatably connected to the rotation center part (5). The first part (2) and the second part (3) rotate around the rotation center part (5) to realize the folding and unfolding of the body (1). In the folded state, the first part (2) and the second part (3) are located on both sides of the middle part (4).

2. The folding mechanism of claim 1, wherein: The rotating center part (5) includes a fixed sleeve (6) set on the middle part (4), a connecting sleeve (7) is inserted into the fixed sleeve (6), a connecting block (8) is provided at one end of the fixed sleeve (6) facing the connecting sleeve (7), a connecting groove (9) matching the connecting block (8) is opened at one end of the connecting sleeve (7), the connecting block (8) is partially inserted into the connecting groove (9) and there is a gap between the connecting block (8) and the bottom of the connecting groove (9), the connecting sleeve (7) is provided with a first connecting unit connected to the first part (2) and a second connecting unit connected to the second part (3), the first part (2) and the second part (3) respectively achieve the folding and unfolding of the body (1) by rotating around the connecting sleeve (7) through the first connecting unit and the second connecting unit.

3. The folding mechanism of claim 2, wherein: The fixed sleeve (6) has a limiting groove (10) on its surface facing the connecting sleeve (7), and a limiting hole (11) is provided at the bottom of the limiting groove (10). The connecting sleeve (7) has a connecting shaft (12) on its surface facing the fixed sleeve (6), and the connecting shaft (12) passes through the limiting hole (11).

4. The folding mechanism of claim 2, wherein: The first connecting unit includes a first guide groove (13) formed on the connecting sleeve (7), and a first latch (14) is provided on the first part (2). The first latch (14) is inserted into the first guide groove (13). The first guide groove (13) is connected to a first locking groove (15) and a second locking groove (16) that match the first latch (14). When the first latch (14) is located in the first locking groove (15), the first part (2) is in an unfolded state. When the first latch (14) is located in the second locking groove (16), the first part (2) is in a folded state.

5. The folding mechanism of claim 2, wherein: The second connecting unit includes a second guide groove (18) formed on the connecting sleeve (7), and a second latch (19) provided on the second part (3). The second latch (19) is inserted into the second guide groove (18). The second guide groove (18) is connected to a third locking groove (20) and a fourth locking groove (21) that match the second latch (19). When the second latch (19) is located in the third locking groove (20), the second part (3) is in an unfolded state. When the second latch (19) is located in the fourth locking groove (21), the second part (3) is in a folded state.

6. The folding mechanism of claim 5, wherein: The fourth locking groove (21) has an inclined guide surface (17) on its groove wall facing the third locking groove (20).

7. The folding mechanism of claim 4, wherein: The second part (3) has a slot (22) that matches the second pin (19), and the end of the second pin (19) facing away from the connecting sleeve (7) is inserted into the slot (22).

8. The folding mechanism of claim 3, wherein: The connecting sleeve (7) has a placement groove (23) on the surface facing the fixing sleeve (6). An elastic element is provided in the placement groove (23). The elastic element is sleeved on the outer edge of the connecting shaft (12) and located between the placement groove (23) and the limiting groove (10).

9. The folding mechanism of claim 2, wherein: The fixing sleeve (6) has a cable tray (24) on the surface opposite to the connecting sleeve (7), and the connecting cable of the body (1) passes through the cable tray (24).

10. The folding mechanism of claim 2, wherein: The connecting sleeve (7) has a button (25) on the surface opposite to the fixing sleeve (6). The button (25) has a pressed state and an unlocked state. When the button (25) is in the pressed state, the connecting block (8) contacts the bottom of the connecting groove (9).

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