Novel drill bit angle adjusting structure

Abstract

The utility model relates to the technical field of drill bit improvement, in particular to a novel drill bit angle adjusting structure which comprises an air cylinder box. The tail part of the first limiting part is inserted into the cylinder box; one end of the tool sheath is rotatably connected with the inner wall of the air cylinder box, the periphery of the other end of the tool sheath is sequentially sleeved with a sheath cover and an angle adjusting piece, and a first adjusting piece is annularly arranged in the area, corresponding to the angle adjusting piece, of the tool sheath; the angle adjusting part comprises a first adjusting end which is connected with the sheath cover in a sliding manner and a second adjusting end which is connected with the head of the first limiting part in a separable manner; and the elastic piece is arranged between the inner wall of the angle adjusting piece and the outer wall of the tool sheath. The tail portion of the angle adjusting part is separated from the first limiting part by pulling the angle adjusting part, the angle adjusting part can drive the tool sheath to rotate to the corresponding position by rotating the angle adjusting part, the tool sheath can be reset to be connected with the first limiting part in a limiting mode under the action of the elastic part by loosening the hand, and the tool is simple and light in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bit improvement, in particular to a novel drill bit angle adjustment structure. Background Art

[0002] As for electric hammers and electric hammer drills, they are well-known as multi-function machines, which usually have three functions: drilling only, hammering only, and hammering + drilling. When used for hammering operations, in order to adapt to different working scenarios, for example, when the head is a flat chisel head for excavation or demolition, the flat chisel head needs to be adjusted to different angles to improve the user's operating comfort.

[0003] The traditional structure either has bare metal (which may not be ironed), or is complex (expensive) or bulky. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and provide a new drill bit angle adjustment structure, including:

[0005] Cylinder box;

[0006] A first limiting member, wherein the tail of the first limiting member is inserted into the cylinder box, and a fixing sheet is provided between the head of the first limiting member and the cylinder box;

[0007] A tool sheath, one end of which is rotatably connected to the inner wall of the cylinder box, and the other end of which is sequentially sleeved with a sheath cover and an angle adjustment member, and a first adjustment member is arranged in an area corresponding to the angle adjustment member on the tool sheath;

[0008] The angle adjustment member comprises a first adjustment end slidably connected to the protective cover and a second adjustment end detachably connected to the head of the first limiting member, the first adjustment end is sleeved on the tail of the protective cover, a second adjustment member is provided on the second adjustment end at a position corresponding to the first adjustment member, and a first limiting groove is provided on the end surface of the second adjustment end in an area matching the head of the first limiting member;

[0009] An elastic member is arranged between the inner wall of the angle adjustment member and the outer wall of the tool sheath, one end of the elastic member abuts against the rear end surface of the sheath cover, and the other end abuts against the second adjustment end of the angle adjustment member.

[0010] Furthermore, the first limiting member is a screw, the fixing plate is a pressure plate, a plurality of the first limiting members are arranged in a ring shape and inserted in the cylinder box, and screw matching holes are provided on the fixing plate at positions corresponding to the first limiting members.

[0011] Further, the tail end of the tool sheath is provided with a plurality of first clamping bosses and first clamping grooves, the inner wall of the cylinder box is provided with second clamping grooves and second clamping bosses at positions corresponding to the first clamping bosses and the first clamping grooves, and the tail end of the tool sheath is an end placed in the cylinder box;

[0012] The first adjustment member on the tool sheath is a guide groove.

[0013] Further, the angle adjustment member is an angle adjustment locking ring, and the second adjustment end of the angle adjustment member is provided with a base plate that cooperates with the elastic member, and a circular hollow portion is provided at the center of the base plate, and the size of the circular hollow portion matches the outer diameter of the tool sheath, and the end face ring where the base plate and the circular hollow portion are connected is provided with a plurality of guide bosses, and the guide bosses are the second adjustment member.

[0014] Furthermore, the end surface where the base plate is connected to the circular hollow portion extends in a direction away from the first adjustment end to form a limit auxiliary plate; a plurality of first limit bosses are evenly arranged on the outer wall of the limit auxiliary plate, and the circular spacing area between every two adjacent first limit bosses is a first limit groove, and the inner wall of the first limit groove forms a stop wall.

[0015] Furthermore, the sum of the lengths of the second adjusting member and the limiting auxiliary plate is smaller than the length of the first adjusting member.

[0016] Furthermore, the outer wall of the cylinder box is provided with a heat insulation sleeve.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model discloses a novel drill angle adjustment structure, comprising a cylinder box, a first limiter, a tool sheath, an angle adjustment member, and an elastic member arranged between the inner wall of the angle adjustment member and the outer wall of the tool sheath. By pulling the angle adjustment member, the tail of the angle adjustment member is separated from the first limiter, and by rotating the angle adjustment member, the angle adjustment member can drive the tool sheath to rotate to a corresponding position, and by releasing the hand, the tool sheath can be reset to the first limiter under the action of the elastic member. The utility model has a simple and lightweight structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is an exploded view of a novel drill bit angle adjustment structure of the utility model;

[0021] Figure 2This is a cross-sectional view of a novel drill bit angle adjustment structure of the utility model;

[0022] Figure 3 This is a schematic diagram of an angle adjustment member of a novel drill bit angle adjustment structure of the utility model.

[0023] Reference numerals

[0024] 1: Cylinder box;

[0025] 11: second clamping groove; 12: second clamping boss;

[0026] 2: The first limiter;

[0027] 3: Fixed plate;

[0028] 4: Tool sheath;

[0029] 41: first adjusting member; 42: first clamping boss; 43: first clamping groove;

[0030] 5: Sheath cover;

[0031] 6: Angle adjustment piece;

[0032] 61: first adjustment end; 62: second adjustment end; 63: second adjustment member; 64: first limiting groove; 65: bottom plate; 66: circular hollow portion; 67: limiting auxiliary plate; 68: first limiting boss; 69: anti-rotation wall;

[0033] 7: Elastic parts;

[0034] 8: Thermal insulation sleeve. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0036] Example 1

[0037] See also Figure 1-3 The technical solution of a novel drill bit angle adjustment structure provided in this embodiment includes the following:

[0038] Cylinder box 1;

[0039] A first limiting member 2, wherein the tail of the first limiting member 2 is inserted into the cylinder box 1, and a fixing plate 3 is provided between the head of the first limiting member 2 and the cylinder box 1;

[0040] A tool sheath 4, one end of which is rotatably connected to the inner wall of the cylinder box 1, and the other end of which is sequentially sleeved with a sheath cover 5 and an angle adjustment member 6, and a first adjustment member 41 is arranged on the tool sheath 4 in an area corresponding to the angle adjustment member 6;

[0041] The angle adjustment member 6 comprises a first adjustment end 61 slidably connected to the protective cover 5 and a second adjustment end 62 detachably connected to the head of the first limiting member 2, the first adjustment end 61 is sleeved on the tail of the protective cover 5, a second adjustment member 63 is provided on the second adjustment end 62 at a position corresponding to the first adjustment member 41, and a first limiting groove 64 is provided on the end surface of the second adjustment end 62 in an area matching the head of the first limiting member 2;

[0042] The elastic member 7 is disposed between the inner wall of the angle adjustment member 6 and the outer wall of the tool sheath 4 , one end of the elastic member 7 abuts against the rear end surface of the sheath cover 5 , and the other end abuts against the second adjustment end 62 of the angle adjustment member 6 .

[0043] In a specific implementation, the elastic member 7 can be a return spring.

[0044] In a specific implementation, a plurality of threaded holes are arranged in a ring on the wall of the cylinder box 1, and the first limiting member 2 is a screw, the first limiting member 2 includes a threaded tail and a nut head, the threaded tail matches the threaded hole, the fixing plate 3 is a pressure plate, the pressure plate is not limited to a sheet metal part, a plurality of the first limiting members 2 are arranged in a ring shape and inserted in the cylinder box 1, and a screw matching hole is provided on the fixing plate 3 at a position corresponding to the first limiting member 2, and the purpose of arranging the fixing plate 3 between the nut and the end of the cylinder box 1 is to limit the axial movement of the tail of the tool sheath 4.

[0045] In a specific implementation, a plurality of first clamping bosses 42 and first clamping grooves 43 are provided at the tail end of the tool sheath 4, and a second clamping groove 11 and a second clamping boss 12 are provided at positions corresponding to the first clamping bosses 42 and the first clamping grooves 43 on the inner wall of the cylinder box 1, and the tail end of the tool sheath 4 is the end placed in the cylinder box 1; after installation, the first clamping boss 42 is placed in the second clamping groove 11, and the second clamping boss 12 is placed in the first clamping groove 43, and the fixing plate 3 mentioned above applies a force to the tail end of the tool sheath 4 to effectively prevent movement.

[0046] The first adjusting member 41 on the tool sheath 4 is a guide groove.

[0047] Furthermore, the angle adjustment member 6 is an angle adjustment locking ring, and the second adjustment end 62 of the angle adjustment member 6 is provided with a base plate 65 that cooperates with the elastic member 7, and a circular hollow portion 66 is provided at the center of the base plate 65, and the size of the circular hollow portion 66 matches the outer diameter of the tool sheath 4, and the end face ring where the base plate 65 and the circular hollow portion 66 are connected is provided with a plurality of guide bosses, and the guide bosses are the second adjustment member 63.

[0048] The guide boss is always placed in the guide groove, and the guide boss can slide back and forth in the guide groove as the angle adjustment member 6 is pulled. When the angle adjustment member 6 rotates, the guide boss applies force to the guide groove to drive the tool sheath 4 to rotate.

[0049] Furthermore, the end surface where the bottom plate 65 connects with the circular hollow portion 66 extends in a direction away from the first adjustment end 61 to form a limit auxiliary plate 67; the outer wall of the limit auxiliary plate 67 is evenly surrounded by a plurality of first limit bosses 68, and the circular spacing area between every two adjacent first limit bosses 68 is a first limit groove 64, and the inner wall of the first limit groove 64 forms a stop wall 69.

[0050] In a specific implementation, when not in use, one end of the elastic member 7 disposed between the inner wall of the angle adjustment member 6 and the outer wall of the tool sheath 4 abuts against the bottom plate 65, and the other end abuts against the rear end surface of the sheath cover 5. The second adjustment member 63 on the angle adjustment member 6 is placed in the first adjustment member 41 at one end close to the cylinder box 1 under the action of elasticity; one end of the angle adjustment member 6 is sleeved on the rear end of the sheath cover 5 (but the rear end of the sheath cover 5 is not completely placed in the angle adjustment member 6, leaving room for the subsequent pulling of the angle adjustment member 6), and the first limiting groove 64 at the other end of the angle adjustment member 6 is sleeved on the head of the first limiting member 2. At this time, due to the existence of the anti-rotation wall 69 of the first limiting groove 64, the angle adjustment member 6 cannot rotate;

[0051] Preferably, in order to ensure that when the angle adjustment member 6 is pulled, the first limit groove 64 (with the same height as the limit auxiliary plate 67) at the tail of the angle adjustment member 6 is completely disengaged from the nut of the first limit member 2 to achieve rotation, therefore, the sum of the lengths of the second adjustment member 63 and the limit auxiliary plate 67 is less than the length of the first adjustment member 41.

[0052] Furthermore, the outer wall of the cylinder box 1 is provided with a heat insulation sleeve 8.

[0053] The working principle or working process of a novel drill bit angle adjustment structure provided by the utility model is as follows:

[0054] When the angle needs to be adjusted, the angle adjustment member 6 is pulled toward the direction of the sheath cover 5, so that the first limiting groove 64 on the angle adjustment member 6 leaves the head of the first limiting member 2 (screw), and the angle adjustment member 6 without the restriction of the first limiting member 2 can rotate at this time, and at the same time, the elastic member 7 is in a compressed state;

[0055] Rotate the angle adjusting member 6 to drive the tool sheath 4 to rotate to the corresponding position and then release the angle adjusting member 6. The elastic member 7 generates an elastic restoring force on the bottom plate 65 in the angle adjusting member 6, so that the angle adjusting member 6 gradually approaches the first limiting member 2. When the first limiting groove 64 is inserted into the head of the first limiting member 2, it means that the angle adjustment is completed. At this time, the first limiting member 2 interferes with the anti-rotation wall 69 of the first limiting groove 64, and the angle adjusting member 6 is fixed and cannot rotate.

[0056] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new drill bit angle adjustment structure, characterized in that: include: Cylinder box; A first limiting member, wherein the tail of the first limiting member is inserted into the cylinder box, and a fixing sheet is provided between the head of the first limiting member and the cylinder box; A tool sheath, one end of which is rotatably connected to the inner wall of the cylinder box, and the other end of which is sequentially sleeved with a sheath cover and an angle adjustment member, and a first adjustment member is arranged in an area corresponding to the angle adjustment member on the tool sheath; The angle adjustment member comprises a first adjustment end slidably connected to the protective cover and a second adjustment end detachably connected to the head of the first limiting member, the first adjustment end is sleeved on the tail of the protective cover, a second adjustment member is provided on the second adjustment end at a position corresponding to the first adjustment member, and a first limiting groove is provided on the end surface of the second adjustment end in an area matching the head of the first limiting member; An elastic member is arranged between the inner wall of the angle adjustment member and the outer wall of the tool sheath, one end of the elastic member abuts against the rear end surface of the sheath cover, and the other end abuts against the second adjustment end of the angle adjustment member.

2. The novel drill bit angle adjustment structure according to claim 1 is characterized in that: The first limiting member is a screw, the fixing plate is a pressure plate, a plurality of the first limiting members are arranged in a ring shape and inserted in the cylinder box, and screw matching holes are provided on the fixing plate at positions corresponding to the first limiting members.

3. The novel drill bit angle adjustment structure according to claim 1 is characterized in that: The tail end of the tool sheath is provided with a plurality of first clamping bosses and first clamping grooves, and the inner wall of the cylinder box is provided with second clamping grooves and second clamping bosses at positions corresponding to the first clamping bosses and the first clamping grooves, and the tail end of the tool sheath is an end placed in the cylinder box; The first adjustment member on the tool sheath is a guide groove.

4. The novel drill bit angle adjustment structure according to claim 3 is characterized in that: The angle adjustment member is an angle adjustment locking ring. The second adjustment end of the angle adjustment member is provided with a base plate that matches the elastic member. A circular hollow portion is provided at the center of the base plate. The size of the circular hollow portion matches the outer diameter of the tool sheath. The end face ring where the base plate connects to the circular hollow portion is provided with a plurality of guide bosses. The guide bosses are the second adjustment member.

5. The novel drill bit angle adjustment structure according to claim 4 is characterized in that: The end surface of the bottom plate connected to the circular hollow portion extends in a direction away from the first adjustment end to form a limit auxiliary plate; the outer wall of the limit auxiliary plate is evenly surrounded by a plurality of first limit bosses, and the circular spacing area between every two adjacent first limit bosses is a first limit groove, and the inner wall of the first limit groove forms a stop wall.

6. The novel drill bit angle adjustment structure according to claim 5 is characterized in that: The sum of the lengths of the second adjusting member and the limiting auxiliary plate is smaller than the length of the first adjusting member.

7. The novel drill bit angle adjustment structure according to claim 1 is characterized in that: The outer wall of the cylinder box is provided with a heat insulation sleeve.

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