Drill bit clamping device of portable direct current electric drill

Abstract

The utility model relates to the technical field of portable direct-current electric drills, and discloses a drill bit clamping device of a portable direct-current electric drill, which is provided with a fixing mechanism and an auxiliary mechanism, the fixing mechanism is used for fixing a drill bit, and the auxiliary mechanism is used for limiting the fixing position. The portable direct-current electric drill solves the problems that although an existing portable direct-current electric drill is excellent in portability and functionality, the design of a drill bit clamping device still has defects, so that a user faces much inconvenience in actual operation, a traditional clamping device usually needs to use an additional tool to mount and dismount a drill bit, and the use cost is low. The problems that in the prior art, the operation complexity is increased, the operation time is prolonged, in addition, a manual clamping mode is often difficult to provide enough stability, the loosening phenomenon is prone to occurring during high-load operation, the working efficiency and safety are affected, and especially for non-professional users, misoperation or infirm clamping is prone to occurring are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hand-held direct current electric drill technical field especially relates to a hand-held direct current electric drill's drill chuck device. BACKGROUND

[0002] Hand-held direct current electric drill is a kind of portable and efficient electric tool, is widely used in household maintenance, construction and industrial manufacturing etc., it provides power by built-in rechargeable battery, need not rely on power cord, to realize the flexible operation in any place, this electric drill is usually equipped with high-performance brushless motor, not only improves work efficiency, also prolongs the service life of equipment.

[0003] The existing hand-held direct current electric drill lacks a drill chuck device convenient to operate, the above-mentioned technology has the problems: the existing hand-held direct current electric drill although in portability and functional aspects is outstanding, but there is still deficiency in the design of drill chuck device, leads to user in actual operation faces many inconveniences, traditional chuck device usually needs to use additional tool to install and dismount drill bit, this not only increases the operation complexity, also prolongs the operation time, in addition, manual clamping mode often is difficult to provide enough stability, is prone to loose phenomenon when high load operation, influences work efficiency and safety, especially for non-professional user, prone to misoperation or clamping not firm condition. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model provides a drill chuck device for hand-held direct current electric drill that can overcome the above problems or at least partially solve the above problems.

[0005] The utility model is realized in this way, a kind of drill chuck device for hand-held direct current electric drill, including electric drill, connecting head and drill bit, the electric drill front end with the connecting head surface fixed connection, the connecting head front side with the drill bit rear end surface contact, the drill bit rear side is provided with fixed mechanism, the fixed mechanism is provided with auxiliary mechanism;

[0006] The fixed mechanism is used to fix the drill bit;

[0007] The auxiliary mechanism is used to limit the fixed position.

[0008] In order to improve work efficiency, preferably, the fixing mechanism comprises a limiting block, a matching block, a stroke plate, an elastic block, a fixing ring and a driven gear, the surface of the limiting block is in sliding contact with the inner wall of the matching block, the surfaces on both sides of the matching block are connected with the surfaces of the two stroke plates through sliding grooves, the surfaces of the stroke plates are fixedly connected with the surfaces on both sides of the elastic block, the upper surface of the elastic block is fixedly connected with the inner wall of the fixing ring, and the outer surface of the fixing ring is fixedly connected with the inner wall of the driven gear. The elastic force provided by the elastic block ensures that uniform pressure is applied to the drill bit during clamping, which not only helps to improve the firmness of the drill bit clamping, but also can absorb vibration to some extent and reduce instability during operation.

[0009] In order to improve the stability of the fixing, preferably, the auxiliary mechanism comprises a driving screw, a connecting rod, a supporting block, a positioning rod, a fixing plate and a spring, the left side surface of the driving screw is fixedly connected with the front side surface of the connecting rod, the rear side surface of the connecting rod is fixedly connected with the inner wall of the supporting block, the right inner wall of the supporting block is in sliding connection with the surface of the positioning rod, the surface of the positioning rod is fixedly connected with the inner wall of the fixing plate, and the lower surface of the fixing plate is fixedly connected with the upper end of the spring. The positioning rod can freely slide in the supporting block, ensuring that it can be accurately inserted into the limiting groove outside the supporting rod, and maintaining close contact through the pressure of the spring to prevent loosening caused by vibration or impact during operation.

[0010] In order to improve the operation efficiency and accuracy, preferably, a mounting head is arranged on the front side of the connecting head, the surface of the mounting head is fixedly connected with the surface of the connecting head, a supporting pipe is arranged on the upper side of the mounting head, the surface of the mounting head is fixedly communicated with the surface of the supporting pipe, and a limiting groove is formed in the right side of the supporting pipe. The fixed communication between the mounting head and the supporting pipe not only provides mechanical support, but also ensures the efficiency and accuracy of power transmission. The supporting pipe, as the operation channel of the driving screw, ensures smooth conduction of rotary force through seamless connection with the mounting head.

[0011] In order to improve the convenience of installing the limiting block, preferably, the surface of the limiting block is rotatably connected with the inner wall of the mounting head through a rotating shaft, the surface of the matching block is slidingly connected with the inner wall of the fixing ring, the surface of the stroke plate is fixedly connected with the inner wall of the fixing ring, and the surface of the limiting block is rotatably connected with the surface of the fixing ring through a sliding groove. The rotating shaft allows the limiting block to freely rotate within a certain range, ensuring that the drill bit can be flexibly aligned and smoothly inserted into the mounting head. The rotatable connection not only improves the convenience of operation, but also reduces the risk of wear and damage caused by misalignment.

[0012] In order to improve the convenience of operation, preferably, the surface of the driving screw is rotatably connected with the inner wall of the support pipe, the surface of the connecting rod is rotatably connected with the inner wall of the support pipe, the surface of the support block is slidably connected with the right surface of the support pipe, the surface of the fixed plate is slidably connected with the inner wall of the support block through a sliding groove, the lower end of the spring is fixedly connected with the inner wall of the support block, and the lower end of the positioning rod is in sliding contact with the inner wall of the limiting groove, so that the positioning rod can be accurately inserted and locked in the limiting groove through the spring, the loosening phenomenon caused by accidental rotation of the driving screw is prevented, the stability and safety of the drill bit during use are ensured, the positioning rod can be quickly unlocked when needed, and the disassembly process of the drill bit is simplified.

[0013] In order to improve the reliability of operation, preferably, the surface of the driving screw is rotatably connected with the tooth surface of the driven gear, and the lower end of the drill bit is fixedly connected with the surface of the limiting block, so that the rotating force can be accurately and reliably transmitted from the driving screw to the driven gear, so that the whole fixing mechanism is driven to work, and the operator can realize fine adjustment of clamping force and drill bit position by controlling the rotation of the driving screw.

[0014] The utility model discloses a fixing mechanism, auxiliary mechanism, limiting block, cooperation piece, elastic block, fixed ring, driven gear, driving screw, positioning rod, fixed plate and spring are set up, and the fixing mechanism is used for fixing the drill bit, and the auxiliary mechanism is used for limiting the fixed position, utilizes the elasticity that elastic block provided, has guaranteed the even pressure that the drill bit is applied in the clamping process, this not only helps to improve the firmness of drill bit clamping, can also absorb the vibration to a certain extent, reduces the instability when operating, the positioning rod can slide freely inside the support block, ensure that it can be accurately inserted into the limiting groove outside the support rod, and the pressure of the spring is maintained in close contact, prevent loosening caused by vibration or impact in the operation process, solve the existing hand-held direct current electric drill although the portability and functional aspect are outstanding, but there is still insufficient in the design of drill bit clamping device, lead to user in actual operation faces many inconveniences, the traditional clamping device usually needs to use additional tools to install and disassemble the drill bit, this not only increases the operation complexity, also prolongs the operation time, in addition, the manual clamping mode often is difficult to provide enough firmness, and the loosening phenomenon appears easily in high load operation, influence work efficiency and safety, especially for non-professional users, prone to misoperation or clamping not firm situation. ACCURACY OF DRAWINGS

[0015] Fig. 1 It is the schematic diagram of the body three-dimensional structure that the utility model provides an embodiment of;

[0016] Fig. 2 It is the schematic diagram of the installation head vertical section three-dimensional structure that the utility model provides an embodiment of;

[0017] Fig. 3 is a fixed mechanism three-dimensional structure schematic diagram provided by the embodiment of the utility model;

[0018] Fig. 4 is a auxiliary mechanism three-dimensional structure schematic diagram provided by the embodiment of the utility model.

[0019] In the drawing: 1, fixed mechanism;101, limit block;102, cooperation block;103, stroke plate;104, elastic block;105, fixed ring;106, driven gear;2, auxiliary mechanism;201, driving screw;202, connecting rod;203, support block;204, positioning rod;205, fixed plate;206, spring;3, mounting head;4, support pipe;5, limit slot;6, electric drill;7, connecting head;8, drill bit. DETAILED DESCRIPTION

[0020] In order to further understand the invention content, characteristics and efficacy of the utility model, the following examples are cited, and the detailed description is as follows in conjunction with the drawings.

[0021] The structure of the utility model is described in detail below in conjunction with the drawings.

[0022] As Figs. 1 to 4As shown, the utility model discloses a drill chuck device of portable direct current electric drill, including electric drill 6, connecting head 7 and drill bit 8, and electric drill 6 front end is fixedly connected with the surface of connecting head 7, and the front side of connecting head 7 is in contact with the rear end surface of drill bit 8, and the rear side of drill bit 8 is provided with fixed mechanism 1, is provided with auxiliary mechanism 2 on fixed mechanism 1, and fixed mechanism 1 is used for fixing drill bit 8, and auxiliary mechanism 2 is used for limiting fixed position, and fixed mechanism 1 includes limiting block 101, cooperation block 102, stroke plate 103, elastic block 104, fixed ring 105 and driven gear 106, and the surface of limiting block 101 is in sliding contact with the inner wall of cooperation block 102, and the surface of cooperation block 102 both sides is slidably connected with the surface of two stroke plates 103 through sliding slot, and the surface of stroke plate 103 is fixedly connected with the surface of elastic block 104 both sides, and the upper surface of elastic block 104 is fixedly connected with the inner wall of fixed ring 105, and the outer surface of fixed ring 105 is fixedly connected with the inner wall of driven gear 106, utilizes the elasticity provided by elastic block 104, guarantees the even pressure that drill bit 8 is applied in clamping process, this not only helps to improve the firmness of drill bit 8 clamping, also can absorb vibration to some extent, reduces the instability when operating, and auxiliary mechanism 2 includes driving screw 201, connecting rod 202, support block 203, positioning rod 204, fixed plate 205 and spring 206, and the left surface of driving screw 201 is fixedly connected with the front surface of connecting rod 202, and the rear surface of connecting rod 202 is fixedly connected with the inner wall of support block 203, and the right inner wall of support block 203 is slidably connected with the surface of positioning rod 204, and the surface of positioning rod 204 is fixedly connected with the inner wall of fixed plate 205, and the lower surface of fixed plate 205 is fixedly connected with the upper end of spring 206, and positioning rod 204 can freely slide inside support block 203, ensure that it can be accurately inserted into the limiting slot 5 outside the support rod, and maintain close contact through the pressure of spring 206, prevent loosening caused by vibration or impact in the operation process, and the front side of connecting head 7 is provided with mounting head 3, and the surface of mounting head 3 is fixedly connected with the surface of connecting head 7, and the upper side of mounting head 3 is provided with support tube 4, and the surface of mounting head 3 is fixedly communicated with the surface of support tube 4, and the right side of support tube 4 is provided with limiting slot 5, and the fixed communication between mounting head 3 and support tube 4 not only provides mechanical support, but also guarantees the efficiency and accuracy of power transmission, and support tube 4 is the operation channel of driving screw 201, and its seamless connection with mounting head 3 ensures the smooth conduction of rotary force, and the surface of limiting block 101 is rotatably connected with the inner wall of mounting head 3 through the pivot, and the surface of cooperation block 102 is slidably connected with the inner wall of fixed ring 105, and the surface of stroke plate 103 is fixedly connected with the inner wall of fixed ring 105, and the surface of limiting block 101 is rotatably connected with the surface of fixed ring 105 through sliding slot, and limiting block 101 is allowed to rotate freely within a certain range through the pivot, ensuring that drill bit 8 can be flexibly aligned and smoothly inserted into mounting head 3, and the rotary connection mode not only improves the convenience of operation, but also reduces the wear and damage risk caused by misalignment,The surface of the driving screw 201 is meshed and connected with the tooth surface of the driven gear 106, and the lower end of the drill bit 8 is fixedly connected with the surface of the limiting block 101, so that the rotating force can be accurately and accurately transmitted from the driving screw 201 to the driven gear 106, so as to drive the whole fixing mechanism 1 to work, so that the operator can realize the fine adjustment of the clamping force and the position of the drill bit 8 by controlling the rotation of the driving screw 201.

[0023] When installing the drill bit 8 of the electric drill 6, first, the limiting block 101 at the rear end of the drill bit 8 is inserted into the corresponding mounting head 3 at the front end of the connecting head 7, then the driving screw 201 in the support pipe 4 at the upper end of the mounting head 3 is rotated, through the meshing mechanism between the driving screw 201 and the driven gear 106, the driving gear starts to rotate, in this process, the fixing ring 105 fixed to the inner wall of the driving gear rotates synchronously, and the matching block 102 in it moves, the inner wall of the matching block 102 is provided with a protruding structure, which can be matched with the corresponding groove on the limiting block 101 of the drill bit 8, with rotation, the protrusions on the matching block 102 will be smoothly embedded in the corresponding position of the limiting block 101, and the drill bit 8 will be firmly clamped by the elastic force provided by the elastic block 104, after clamping, in order to prevent loosening phenomenon caused by operation process, the positioning rod 204 arranged in the support block 203 outside the driving screw 201 is accurately inserted into the limiting groove 5 outside the support rod, and the pressure of the spring 206 is used to maintain the close contact between the two, thereby stabilizing the position of the driving screw 201, ensuring the stability and safety of the drill bit 8 during use, when the drill bit 8 needs to be disassembled, first, the positioning rod 204 is pulled out of the limiting groove 5 containing it, then the positioning rod 204 is held and rotated in the opposite direction, so that the support block 203 drives the driving screw 201 to reverse, this step makes the driven gear 106 rotate in the opposite direction, and the matching plate inside the fixing ring 105 slides in the opposite direction along the stroke plate 103, gradually releasing the clamping force on the limiting block 101, finally allowing the drill bit 8 to be easily removed for replacement, this design not only simplifies the installation and disassembly process of the drill bit 8, but also improves the safety and efficiency of the whole operation.

[0024] It is to be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0025] The above description merely provides preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed with reference to the preferred embodiments, the present application is not limited to the preferred embodiments. Any person skilled in the art to which the present application pertains can make modifications and changes without departing from the scope of the present application.

Claims

1. A drill bit holding device for a handheld DC electric drill, comprising an electric drill (6), a connector (7), and a drill bit (8), wherein the front end of the electric drill (6) is fixedly connected to the surface of the connector (7), and the front side of the connector (7) contacts the rear end surface of the drill bit (8), characterized in that: A fixing mechanism (1) is provided on the rear side of the drill bit (8), and an auxiliary mechanism (2) is provided on the fixing mechanism (1). The fixing mechanism (1) is used to fix the drill bit (8); The auxiliary mechanism (2) is used to restrict the fixed position.

2. The drill bit clamping device for a handheld DC electric drill as described in claim 1, characterized in that: The fixing mechanism (1) includes a limiting block (101), a mating block (102), a travel plate (103), an elastic block (104), a fixing ring (105), and a driven gear (106). The surface of the limiting block (101) slides in contact with the inner wall of the mating block (102). The two side surfaces of the mating block (102) are slidably connected to the surfaces of the two travel plates (103) through a sliding groove. The surface of the travel plate (103) is fixedly connected to the two side surfaces of the elastic block (104). The upper surface of the elastic block (104) is fixedly connected to the inner wall of the fixing ring (105). The outer surface of the fixing ring (105) is fixedly connected to the inner wall of the driven gear (106).

3. The drill bit clamping device for a handheld DC electric drill as described in claim 2, characterized in that: The auxiliary mechanism (2) includes an active screw (201), a connecting rod (202), a support block (203), a positioning rod (204), a fixing plate (205), and a spring (206). The left side surface of the active screw (201) is fixedly connected to the front side surface of the connecting rod (202), the rear side surface of the connecting rod (202) is fixedly connected to the inner wall of the support block (203), the right side inner wall of the support block (203) is slidably connected to the surface of the positioning rod (204), the surface of the positioning rod (204) is fixedly connected to the inner wall of the fixing plate (205), and the lower surface of the fixing plate (205) is fixedly connected to the upper end of the spring (206).

4. The drill bit clamping device for a handheld DC electric drill as described in claim 3, characterized in that: The connector (7) has a mounting head (3) on its front side. The surface of the mounting head (3) is fixedly connected to the surface of the connector (7). A support tube (4) is provided on the upper side of the mounting head (3). The surface of the mounting head (3) is fixedly connected to the surface of the support tube (4). A limit groove (5) is opened on the right side of the support tube (4).

5. The drill bit clamping device for a handheld DC electric drill as described in claim 4, characterized in that: The surface of the limiting block (101) is rotatably connected to the inner wall of the mounting head (3) via a rotating shaft, the surface of the mating block (102) is slidably connected to the inner wall of the fixing ring (105), the surface of the travel plate (103) is fixedly connected to the inner wall of the fixing ring (105), and the surface of the limiting block (101) is rotatably connected to the surface of the fixing ring (105) via a sliding groove.

6. The drill bit clamping device for a handheld DC electric drill as described in claim 4, characterized in that: The surfaces of both ends of the active screw (201) are rotatably connected to the inner wall of the support tube (4), the surface of the connecting rod (202) is rotatably connected to the inner wall of the support tube (4), the surface of the support block (203) is slidably connected to the right side surface of the support tube (4), the surface of the fixing plate (205) is slidably connected to the inner wall of the support block (203) through a sliding groove, the lower end of the spring (206) is fixedly connected to the inner wall of the support block (203), and the lower end of the positioning rod (204) is slidably contacted with the inner wall of the limiting groove (5).

7. The drill bit clamping device for a handheld DC electric drill as described in claim 3, characterized in that: The surface of the driving screw (201) meshes with the tooth surface of the driven gear (106), and the lower end of the drill bit (8) is fixedly connected to the surface of the limiting block (101).

Images