Anti-loose saw blade quick-change structure

Abstract

The utility model provides an anti-loose saw blade quick-change structure which comprises a grab handle and a connector arranged at one end of the grab handle, a mounting groove is formed in the end, away from the grab handle, of the connector, a saw blade is inserted into the mounting groove, a plurality of positioning grooves are formed in the side of the mounting groove, one end of each positioning groove is close to the mounting groove, and the other end of each positioning groove is away from the mounting groove. A positioning block is movably arranged in the positioning groove, and when the positioning block is located at the end, close to the mounting groove, of the positioning groove, the positioning block limits the saw blade; the stability of the saw blade in use is improved, and the saw blade can be conveniently replaced.

Description

Technical Field

[0001] The utility model relates to the field of jigsaws, in particular to an anti-loosening saw blade quick-change structure. Background Art

[0002] Jig saws are mainly used for cutting metal and non-ferrous metals. When cutting metal, jig saws have stronger chip handling capabilities, and because the jig saws have larger teeth, they are more efficient when cutting wood and other wood products.

[0003] However, the current jigsaw is rather cumbersome when replacing the saw blade, making it difficult for users to replace the saw blade in time, resulting in poor cutting effect. Some jigsaws that use a saw blade quick-release structure have the problem of a loose quick-release structure, which makes the saw blade easy to shake during cutting, thus affecting the stability during cutting. Utility Model Content

[0004] The purpose of the utility model is to provide a saw blade quick-change structure that increases the stability of the saw blade when in use and allows the saw blade to be replaced conveniently.

[0005] In order to solve the above technical problems, the utility model provides an anti-loosening saw blade quick-change structure, including a handle and a connecting head arranged at one end of the handle, an installation groove is provided at the end of the connecting head away from the handle, and the saw blade is inserted into the installation groove, and a plurality of positioning grooves are provided on the side of the installation groove, one end of the positioning groove is arranged close to the installation groove, and the other end is arranged away from the installation groove, so that the positioning groove is inclined relative to the installation groove, and a positioning block is movably arranged in the positioning groove, and when the positioning block is located at the end of the positioning groove close to the installation groove, the positioning block limits the saw blade.

[0006] Furthermore, a movable sleeve is provided on the outer side of the connecting head, and an elastic member is provided between the movable sleeve and the connecting head. A limiting groove corresponding to the positioning groove is opened on the side of the movable sleeve, and positioning rods are extended on both sides of the positioning block. The positioning rods are inserted into the limiting grooves so that when the movable sleeve moves relative to the connecting head, the positioning block moves along the positioning groove.

[0007] Furthermore, a plurality of locking teeth are arranged on a side of the positioning block close to the saw blade.

[0008] Furthermore, bosses are provided on both sides of the exterior of the connector, so that one end of the elastic member is mounted on the bosses.

[0009] Furthermore, guide grooves are provided on both sides of the connector, and guide blocks corresponding to the guide grooves are provided on both sides of the movable sleeve, so that when the movable sleeve moves relative to the connector, the guide blocks slide along the guide grooves.

[0010] Furthermore, a protective cover is provided on the outer periphery of the movable sleeve.

[0011] Furthermore, a card block is provided on the outside of the movable sleeve, and the protective cover is provided with a card slot matching the card block, and the opening of the card slot faces the moving direction of the movable sleeve, so that the protective cover can drive the movable sleeve to move.

[0012] The beneficial effect of the present invention is that: the saw blade is inserted into the installation slot. At this time, since the positioning slot is located at the side of the installation slot, the positioning block in the positioning slot limits the side of the saw blade, so that the saw blade is stably installed in the installation slot, avoiding the saw blade from shaking during cutting. At the same time, when the saw blade needs to be replaced, several positioning blocks are uniformly moved along the positioning slot to the end of the positioning slot away from the installation slot, so that the positioning blocks are separated from the limitation on the saw blade, and the saw blade can be conveniently replaced and disassembled. After the new saw blade is reinserted into the installation slot, several positioning blocks are uniformly reset along the positioning slot to the end of the positioning slot close to the installation slot, so that several positioning blocks limit the saw blade again. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 It is a side view of the present utility model.

[0015] Figure 3 This utility model Figure 2 Section view along line AA.

[0016] Figure 4 This utility model Figure 3 A partial enlarged view of point A in the middle.

[0017] Figure 5 This utility model Figure 2 Cross-section along line BB.

[0018] Figure 6 This utility model Figure 5 A partial enlarged view of point B in the middle.

[0019] Figure 7 It is an exploded view of the present utility model.

[0020] Figure numerals: 1. handle; 2. connector; 3. mounting slot; 4. saw blade; 5. positioning slot; 6. positioning block; 7. movable sleeve; 8. elastic member; 9. limiting slot; 10. positioning rod; 11. latching tooth; 12. boss; 13. guide slot; 14. guide block; 15. protective cover; 16. latching block; 17. slot. DETAILED DESCRIPTION

[0021] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art belong to the protection scope of the present application.

[0022] Those skilled in the art should understand that, in the disclosure of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are merely for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms cannot be understood as a limitation on the present application.

[0023] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0024] As Figures 1-7 The present application provides a kind of anti-loose saw blade quick-change structure, including handle 1, the connecting head 2 of being located in handle 1 one end, the end of connecting head 2 away from handle 1 is equipped with installation groove 3, saw blade 4 is inserted in installation groove 3, the side of installation groove 3 is equipped with several positioning grooves 5, the one end of positioning groove 5 is close to installation groove 3 setting, the other end is away from installation groove 3 setting, to make positioning groove 5 relative to installation groove 3 It is inclined to set, positioning block 6 is movably arranged in positioning groove 5, when positioning block 6 is located in the one end of positioning groove 5 close to installation groove 3, positioning block 6 limits saw blade 4.

[0025] Saw blade 4 is inserted into installation groove 3, positioning block 6 in positioning groove 5 limits the side of saw blade 4 at this time, so that saw blade 4 is stably installed in installation groove 3, to avoid saw blade 4 from shaking when cutting, while when needing to replace saw blade 4, several positioning blocks 6 are uniformly moved to the one end of positioning groove 5 away from installation groove 3 along positioning groove 5, so that positioning block 6 is separated from the limitation of saw blade 4, that is, saw blade 4 can be conveniently replaced and disassembled, and after the new saw blade 4 is reinserted into the installation groove 3, several positioning blocks 6 are uniformly reset and moved to the one end of positioning groove 5 close to installation groove 3 along positioning groove 5, so that several positioning blocks 6 limit saw blade 4 again.

[0026] Among them, the handle 1 and the connecting head 2 are detachably connected by bolts; the mounting groove 3 and the saw blade 4 are clearance-matched to ensure that the saw blade 4 can be easily inserted into the mounting groove 3. At the same time, when the saw blade 4 is limited by the positioning block 6, the two sides of the saw blade 4 are respectively limited by the positioning block 6 and the inner wall of the mounting groove 3, so that the two sides of the saw blade 4 are clamped and fixed synchronously.

[0027] Preferably, a movable sleeve 7 is provided on the outside of the connector 2, and an elastic member 8 is provided between the movable sleeve 7 and the connector 2. A limiting groove 9 corresponding to the positioning groove 5 is opened on the side of the movable sleeve 7, and positioning rods 10 are extended on both sides of the positioning block 6. The positioning rods 10 are inserted into the limiting grooves 9 so that when the movable sleeve 7 moves relative to the connector 2, the positioning block 6 moves along the positioning groove 5.

[0028] When the saw blade 4 needs to be replaced, the movable sleeve 7 is pushed and the movable sleeve 7 is moved relative to the connector 2, and the positioning rod 10 is driven to move through the limiting groove 9, so that the positioning block 6 moves along the positioning groove 5 to the end of the positioning groove 5 away from the mounting groove 3 to ensure that the saw blade 4 is unlocked. After that, after the new saw blade 4 is inserted and installed, it is only necessary to release the push on the movable sleeve 7, and the movable sleeve 7 can drive the positioning block 6 to move again to the end of the positioning groove 5 close to the mounting groove 3 under the pushing and resetting action of the elastic member 8 on the movable sleeve 7 to ensure the limiting effect of the saw blade 4.

[0029] It is worth mentioning that the projections of the positioning groove 5 and the limiting groove 9 on the plane are staggered so that the positioning groove 5 limits the two sides of the moving path of the positioning block 6, and the limiting groove 9 limits the moving direction of the positioning block 6 to ensure that the positioning block 6 does not shake.

[0030] The elastic member 8 adopts a spring structure.

[0031] Preferably, a plurality of latching teeth 11 are arranged on a side of the positioning block 6 close to the saw blade 4 .

[0032] Specifically, by setting a plurality of latch teeth 11, when the positioning block 6 moves to one end of the positioning slot 5 close to the mounting slot 3, the plurality of latch teeth 11 can increase the limiting effect on the side of the saw blade 4 to avoid sliding between the saw blade 4 and the positioning block 6.

[0033] Preferably, bosses 12 are provided on both sides of the exterior of the connector 2 , so that one end of the elastic member 8 is mounted on the boss 12 .

[0034] Specifically, the elastic member 8 is supported and limited by the boss 12 to ensure that the elastic member 8 is stably located between the connection member and the movable sleeve 7, thereby ensuring that the elastic member 8 can stably push the movable sleeve 7 to reset.

[0035] Preferably, guide grooves 13 are provided on both sides of the connector 2 , and guide blocks 14 corresponding to the guide grooves 13 are provided on both sides of the movable sleeve 7 , so that when the movable sleeve 7 moves relative to the connector 2 , the guide blocks 14 slide along the guide grooves 13 .

[0036] Specifically, when the movable sleeve 7 moves, the guide block 14 moves along the guide groove 13, so that the guide block 14 can guide the moving path of the movable sleeve 7, increase the moving direction accuracy of the movable sleeve 7, and thereby ensure the accuracy of the movement of the positioning block 6.

[0037] Preferably, a protective cover 15 is provided on the outer periphery of the movable sleeve 7 .

[0038] Specifically, the protective cover 15 protects the internal movable sleeve 7 and the limiting groove 9 and other structures to prevent waste chips generated during cutting from entering the limiting groove 9 and other structures, thereby avoiding problems such as the positioning block 6 not moving smoothly.

[0039] Preferably, a block 16 is provided on the outside of the movable sleeve 7, and the protective cover 15 is provided with a slot 17 matching the block 16, and the opening of the slot 17 faces the moving direction of the movable sleeve 7, so that the protective cover 15 can drive the movable sleeve 7 to move.

[0040] Specifically, since the movement of the positioning block 6 needs to be driven by the movable sleeve 7, and the outer side of the movable sleeve 7 is provided with a protective cover 15 for protection, a card block 16 is provided at the movable sleeve 7, and a card slot 17 matching the card block 16 is provided at the protective cover 15, so that when the movable sleeve 7 needs to be moved, the user can push the protective cover 15, so that the movable sleeve 7 is pushed under the matching action of the card block 16 and the card slot 17, so as to ensure the stable use of the positioning block 6.

[0041] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A quick-change structure for preventing loosening of saw blades, characterized by: The invention comprises a handle (1), a connector (2) arranged at one end of the handle (1), a mounting groove (3) being provided at one end of the connector (2) away from the handle (1), a saw blade (4) being inserted into the mounting groove (3), a plurality of positioning grooves (5) being provided on the side of the mounting groove (3), one end of the positioning groove (5) being arranged close to the mounting groove (3) and the other end being arranged away from the mounting groove (3), so that the positioning groove (5) is arranged obliquely relative to the mounting groove (3), a positioning block (6) being movably provided in the positioning groove (5), and when the positioning block (6) is located at one end of the positioning groove (5) close to the mounting groove (3), the positioning block (6) limits the saw blade (4).

2. The anti-loosening saw blade quick-change structure according to claim 1, characterized in that: A movable sleeve (7) is sleeved on the outer side of the connector (2), and an elastic member (8) is provided between the movable sleeve (7) and the connector (2). A limiting groove (9) corresponding to the positioning groove (5) is provided on the side of the movable sleeve (7). Positioning rods (10) are extended on both sides of the positioning block (6). The positioning rods (10) are inserted into the limiting grooves (9), so that when the movable sleeve (7) moves relative to the connector (2), the positioning block (6) moves along the positioning groove (5).

3. The anti-loosening saw blade quick-change structure according to claim 1, characterized in that: A plurality of latching teeth (11) are arranged on one side of the positioning block (6) close to the saw blade (4).

4. The anti-loosening saw blade quick-change structure according to claim 2, characterized in that: Bosses (12) are provided on both sides of the exterior of the connector (2), so that one end of the elastic member (8) is mounted on the bosses (12).

5. The anti-loosening saw blade quick-change structure according to claim 2, characterized in that: Guide grooves (13) are provided on both sides of the connector (2), and guide blocks (14) corresponding to the guide grooves (13) are provided on both sides of the movable sleeve (7), so that when the movable sleeve (7) moves relative to the connector (2), the guide blocks (14) slide along the guide grooves (13).

6. The anti-loosening saw blade quick-change structure according to claim 2, characterized in that: The outer periphery of the movable sleeve (7) is provided with a protective cover (15).

7. The anti-loosening saw blade quick-change structure according to claim 6, characterized in that: A clamping block (16) is provided on the outside of the movable sleeve (7), and a clamping slot (17) matching the clamping block (16) is provided on the protective cover (15), with the opening of the clamping slot (17) facing the moving direction of the movable sleeve (7), so that the protective cover (15) can drive the movable sleeve (7) to move.

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