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CN-224222800-U - Drill chuck

CN224222800UCN 224222800 UCN224222800 UCN 224222800UCN-224222800-U

Abstract

The utility model relates to the technical field of drill chuck structures, in particular to a drill chuck which comprises a drill body, clamping jaws, a nut, an outer sleeve and a front cover, wherein a clamping jaw hole is formed in the drill body, the front end of the clamping jaw penetrates through the clamping jaw hole and penetrates out of the lower end of the drill body, the rear end of the clamping jaw penetrates through the clamping jaw hole and penetrates out of the side wall of the drill body, the clamping jaw penetrating out of the side wall of the drill body is connected with the nut in a matched mode, the outer side of the nut is connected with the outer sleeve, the front end of the outer sleeve is sleeved with the front cover, the front cover is characterized in that a clamp-like spring structure is arranged on the inner wall of the front cover, the clamp-like spring structure comprises a connecting part and a clamping part, the connecting part is connected with the inner wall of the front cover, a clamping joint clearance is formed between the clamping part and the inner wall of the front cover after the clamping part is connected with the connecting part, and the clamping part is inserted into a clamping groove formed in the outer wall of the drill body to realize the connection between the drill body and the front cover.

Inventors

  • MA XINJIE
  • JIANG TIAN
  • SUN SHENGNAN

Assignees

  • 山东威达机械股份有限公司

Dates

Publication Date
20260512
Application Date
20250508

Claims (9)

  1. 1. The drill chuck comprises a drill body, clamping jaws, a nut, an outer sleeve and a front cover, wherein the front end of the outer sleeve is sleeved with the front cover, and the drill chuck is characterized in that a clamp-like spring structure is arranged on the inner wall of the front cover and comprises a connecting part and a clamping part, the connecting part is connected with the inner wall of the front cover, a clamping gap is formed between the clamping part and the inner wall of the front cover after the clamping part is connected with the connecting part, and the clamping part is inserted into a clamping groove formed in the outer wall of the drill body to realize connection between the drill body and the front cover.
  2. 2. The drill chuck according to claim 1, wherein the snap-spring-like structure is provided at the front end of the inner wall of the front cover.
  3. 3. The drill chuck according to claim 1, wherein the clamp-like spring structures are provided in at least one group, the connecting portion of each group of clamp-like spring structures is fixedly connected to the inner wall of the front cover, and the clamping portion of each group of clamp-like spring structures extends along the inner wall of the front cover and forms a clamping gap with the front cover.
  4. 4. The drill chuck according to claim 1, wherein the clamp-like spring structure is integrally connected with the front cover, and the front cover and the clamp-like spring structure are made of manganese steel or stainless steel.
  5. 5. A drill chuck according to claim 1, wherein the outer side of the drill body is sleeved with a bushing.
  6. 6. A drill chuck according to claim 1 or 5, characterized in that the front cover is provided with a snap spring inside, the snap spring is arranged at the rear side of the snap spring-like structure, the drill body is provided with a receiving groove cooperating with the snap spring, and the axial positioning of the drill chuck bushing and/or jacket is achieved by means of the snap spring.
  7. 7. A drill chuck according to claim 1 or 5, wherein after the clamping portion is clamped with the clamping groove, a clamping gap between the clamping portion and the inner wall of the front cover abuts against the end face of the drill chuck bushing, the outer sleeve, the drill body or the clamping spring.
  8. 8. The drill chuck according to claim 1, wherein the front cover is internally provided with a sealing ring, the sealing ring is sleeved on the drill body at the rear side of the clamp spring-like structure, and the sealing ring seals a clamping gap between the clamped clamping part and the inner wall of the front cover.
  9. 9. A drill chuck according to claim 8, wherein the sealing ring is of non-metallic material.

Description

Drill chuck Technical Field The utility model relates to the technical field of drill chuck structures, in particular to a drill chuck. Background As is well known, the drill chuck comprises a drill body, clamping jaws, a screw nut, an outer sleeve and a front cover, wherein the outer side of the front cover is usually fixed by a clamping spring and then the lower end of the drill body in the prior art, so that the clamping spring structure is exposed outside the drill body to influence the appearance of the drill chuck, but the outer side of the front end of the drill chuck does not allow the clamping spring and the clamping ring to be similar with a limiting function due to the fact that the requirements of customers on the appearance of the drill chuck are higher and higher in recent years, so that the drill chuck is more attractive. Disclosure of Invention The utility model aims to solve the defects in the prior art and provide the drill chuck with simple structure, attractive appearance and bare clamp spring-free collar structure. The technical scheme adopted for solving the technical problems is as follows: The drill chuck comprises a drill body, clamping jaws, a nut, an outer sleeve and a front cover, wherein the front end of the outer sleeve is sleeved with the front cover, and the drill chuck is characterized in that a clamp-like spring structure is arranged on the inner wall of the front cover and comprises a connecting part and a clamping part, the connecting part is connected with the inner wall of the front cover, a clamping gap is formed between the clamping part and the inner wall of the front cover after the clamping part is connected with the connecting part, and the clamping part is inserted into a clamping groove formed in the outer wall of the drill body to realize connection between the drill body and the front cover. The clamp spring-like structure is arranged at the front end of the inner wall of the front cover. The clamping spring-like structure is at least provided with one group, the connecting part of each group of clamping spring-like structure is fixedly connected with the inner wall of the front cover, and the clamping part of each group of clamping spring-like structure extends along the inner wall of the front cover and forms a clamping gap with the front cover. The clamp spring-like structure is integrally connected with the front cover, and the front cover and the clamp spring-like structure are made of manganese steel or stainless steel. The outside of the drill body is sleeved with a lining. The front cover is internally provided with the clamp spring, the clamp spring is arranged at the rear side of the clamp spring-like structure, the drill body is provided with the accommodating groove matched with the clamp spring, and the axial positioning of the drill chuck bushing and/or the outer sleeve is realized through the clamp spring. After the clamping part is clamped with the clamping groove, a clamping gap between the clamping part and the inner wall of the front cover is abutted against the end face of the drill chuck bushing, the outer sleeve, the drill body or the clamp spring, so that dust is prevented from entering the drill chuck. The sealing ring is arranged in the front cover and sleeved on the drill body at the rear side of the clamp-like spring structure, and seals the clamping gap between the clamped clamping part and the inner wall of the front cover to prevent dust from entering the drill chuck. The sealing ring is made of nonmetallic materials. Due to the adoption of the structure, the clamp ring-free clamp ring structure has the advantages of simple structure, attractive appearance, bare structure without clamp rings and the like. Drawings Fig. 1 is a schematic structural view of embodiment 1 of the present utility model. Fig. 2 is a top view of the front cover of fig. 1. Fig. 3 is an isometric view of the front cover of fig. 1. Fig. 4 is an enlarged view of a portion a in fig. 1. Fig. 5 is a schematic structural view of the seal ring. Fig. 6 is an enlarged view of a portion of the drill body of fig. 4. Fig. 7 is a top view of the front cover of embodiment 2. Detailed Description The utility model is further described below with reference to the accompanying drawings: as shown in the drawing, a drill chuck comprises a drill body 1, clamping jaws 2, a nut 3, an outer sleeve 4 and a front cover 5, wherein a clamping jaw 2 hole is formed in the drill body 1, the front end of the clamping jaw 2 penetrates through the clamping jaw 2 hole and penetrates out of the lower end of the drill body 1, the rear end of the clamping jaw 2 penetrates through the clamping jaw 2 hole and penetrates out of the side wall of the drill body 1, the clamping jaw 2 penetrating out of the side wall of the drill body 1 is connected with the nut 3 in a matched mode, the outer side of the nut 3 is connected with the outer sleeve 4, the outer wall of the drill body 1 at the front end of