Flexible coupling of power tool apron

Abstract

The utility model discloses a power tool apron flexible coupler, and particularly relates to the technical field of couplings, the power tool apron flexible coupler comprises a coupler body, an insertion groove is arranged in the coupler body, an insertion block is inserted in the insertion groove, the top end of the insertion block is fixedly connected with a power head, a first spring is arranged in the insertion groove, and a second spring is arranged in the first spring. The bottom ends of the inserting and embedding grooves penetrate through the coupler body to be provided with fixing screw rods, cushioning grooves are formed in the inserting and embedding blocks, elastic pins are arranged in the cushioning grooves, first moving grooves are formed in the two sides of the coupler body, and the first moving grooves and the elastic pins are symmetrically arranged in a penetrating mode. Through mutual cooperation of the coupler body, the inserting and embedding groove, the inserting and embedding block, the stabilizing pad, the second spring and the limiting protruding block, the power head can be flexibly connected with the coupler body, hard-to-hard connection transmission of the power head and a machine tool is avoided, and the problems of stress deformation and the like caused by non-coaxiality in the transmission process can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, and more specifically, to a flexible coupling for a power tool holder. Background Art

[0002] A coupling is a device that connects two shafts or a shaft and a rotating part, and rotates together during the transmission of motion and power, and does not disengage under normal circumstances. Sometimes it is also used as a safety device to prevent the connected parts from being subjected to excessive loads, playing the role of overload protection.

[0003] However, the existing coupling still has certain problems during use. When the existing device is connected to the machine tool, it may cause certain wear due to impact, resulting in a reduced service life of the equipment. Therefore, in order to solve the above problems, a flexible coupling of a power tool holder is specially proposed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a flexible coupling of a power tool seat, through which the coupling body, insert groove, insert block, power head, first spring, fixed screw rod, shock-absorbing groove, first movable groove, elastic pin, fixed insert block, limit groove, second movable groove, auxiliary groove, stabilizing pad, second spring and limit protrusion cooperate with each other, the power head can flexibly connect the coupling body, avoiding the hard-to-hard connection transmission between the power head and the machine tool, and eliminating the stress deformation and other problems caused by different axes during the transmission process.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flexible coupling of a power tool seat, comprising a coupling body, an insert groove is provided inside the coupling body, an insert block is inserted inside the insert groove, a power head is fixedly connected to the top of the insert block, a first spring is provided inside the insert groove, a fixing screw rod is provided at the bottom end of the insert groove passing through the coupling body, a shock-absorbing groove is provided inside the insert block, an elastic pin is provided inside the shock-absorbing groove, first movable grooves are provided on both sides of the coupling body, and the first movable grooves and the elastic pins are symmetrically arranged through each other.

[0006] In a preferred embodiment, one end of the first spring is fixedly connected to the inner wall of the insertion groove, and the other end of the first spring is fixedly connected to the insertion block.

[0007] In a preferred embodiment, the shock absorbing groove is arranged in an elliptical shape, and the elastic pin is arranged in a close contact with the arc surface at one end of the shock absorbing groove.

[0008] In a preferred embodiment, the surface of the elastic pin is provided by galvanizing.

[0009] In a preferred embodiment, fixed blocks are inserted on both sides of the elastic pin, a second movable groove is opened inside the fixed block, a limiting protrusion is arranged inside the second movable groove, a second spring is arranged inside the second movable groove, a limiting groove is opened on the outer wall of the elastic pin, an auxiliary groove is opened at one end of the second movable groove, the limiting protrusion passes through the auxiliary groove and is inserted on the limiting groove, and a stabilizing pad is fixedly connected to the outer end of the fixed block.

[0010] In a preferred embodiment, the stabilizing pad is arranged in an arc shape, and the inner wall of the stabilizing pad is in contact with the outer wall of the coupling body.

[0011] The technical effects and advantages of the utility model are as follows: through the cooperation of the coupling body, the inserting groove, the inserting block, the power head, the first spring, the fixing screw rod, the shock-absorbing groove, the first movable groove, the elastic pin, the fixing insert block, the limiting groove, the second movable groove, the auxiliary groove, the stabilizing pad, the second spring and the limiting protrusion, the power head can flexibly connect the coupling body, avoiding the hard-to-hard connection transmission between the power head and the machine tool, and eliminating the stress deformation and other problems caused by the different axes during the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structural state of the coupling body of the utility model.

[0013] Figure 2 It is a schematic diagram of a partial cross-sectional state of the three-dimensional structure of the inserting block of the utility model.

[0014] Figure 3 It is a schematic diagram of a partial cross-sectional state of the three-dimensional structure of the elastic pin of the utility model.

[0015] Figure 4 For this utility model Figure 3 A magnified view of the structure at A.

[0016] Among them: 1. Coupling body; 2. Insertion groove; 3. Insertion block; 4. Power head; 5. First spring; 6. Fixed screw rod; 7. Shock-absorbing groove; 8. First movable groove; 9. Elastic pin; 10. Fixed insert block; 11. Limiting groove; 12. Second movable groove; 13. Auxiliary groove; 14. Stabilizing pad; 15. Second spring; 16. Limiting protrusion. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Refer to the instruction manual Figure 1-4 A flexible coupling of a power tool holder comprises a coupling body 1, an inserting groove 2 is provided inside the coupling body 1, an inserting block 3 is inserted and arranged inside the inserting groove 2, a power head 4 is fixedly connected to the top of the inserting block 3, a first spring 5 is arranged inside the inserting groove 2, a fixing screw rod 6 is arranged at the bottom of the inserting groove 2 passing through the coupling body 1, a damping groove 7 is provided inside the inserting block 3, an elastic pin 9 is arranged inside the damping groove 7, first moving grooves 8 are provided on both sides of the coupling body 1, and the first moving grooves 8 and the elastic pins 9 are symmetrically arranged through; one end of the first spring 5 is fixedly connected to the inner wall of the inserting groove 2 The other end of the first spring 5 is fixedly connected to the insert block 3; the shock-absorbing groove 7 is elliptical, and the elastic pin 9 is fitted on the arc surface of one end of the shock-absorbing groove 7; when the power head 4 is connected, under the action of the impact force, the power head 4 moves toward the inside of the insert groove 2. At this time, the shock-absorbing groove 7 inside the power head 4 will be displaced on the outer wall of the elastic pin 9, and then the first spring 5 is used for buffering, so that the power head 4 and the coupling body 1 are flexibly connected, which effectively avoids the hard-to-hard connection transmission between the power head 4 and the machine tool, and can eliminate the stress deformation and other problems caused by the different axes during the transmission process.

[0019] Next, the surface of the elastic pin 9 is galvanized to improve the corrosion resistance and wear resistance of the elastic pin.

[0020] At this time, fixed plug blocks 10 are inserted on both sides of the elastic pin 9, a second movable groove 12 is opened inside the fixed plug block 10, a limiting protrusion 16 is arranged inside the second movable groove 12, a second spring 15 is arranged inside the second movable groove 12, a limiting groove 11 is opened on the outer wall of the elastic pin 9, an auxiliary groove 13 is opened at one end of the second movable groove 12, the limiting protrusion 16 passes through the auxiliary groove 13 and is inserted on the limiting groove 11, and a stabilizing pad 14 is fixedly connected to the outer end of the fixed plug block 10; the limiting protrusion 16 limits the auxiliary groove 13 and the limiting groove 11 , so that the fixed plug block 10 and the elastic pin 9 are fixed, and the stabilizing pad 14 fits the outer wall of the coupling body 1, so that the elastic pin 9 is fixed more stably in the first movable groove 8, and will not rotate due to the material of the elastic pin 9 itself, so as to achieve the effect of normal operation of the coupling body 1. However, by pressing the limiting protrusion 16, the limiting protrusion 16 is disengaged from the limiting groove 11 to limit the contact between the fixed plug block 10 and the elastic pin 9, so that the stabilizing pad 14 is released from the limit and disassembled, which is convenient for maintenance and replacement.

[0021] It should be noted that the stabilizing pad 14 is arranged in an arc shape, and the inner wall of the stabilizing pad 14 fits with the outer wall of the coupling body 1 ; through this structure, the stabilizing pad 14 and the outer wall of the coupling body 1 maintain the stability of the stabilizing pad 14 and the fixed plug 10 .

[0022] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0023] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0024] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A flexible coupling for a power tool holder, comprising a coupling body (1), characterized in that: The coupling body (1) is provided with an inserting groove (2), an inserting block (3) is inserted in the inserting groove (2), a power head (4) is fixedly connected to the top of the inserting block (3), a first spring (5) is provided in the inserting groove (2), a fixing screw rod (6) is provided at the bottom of the inserting groove (2) passing through the coupling body (1), a damping groove (7) is provided in the inserting block (3), an elastic pin (9) is provided in the damping groove (7), first movable grooves (8) are provided on both sides of the coupling body (1), and the first movable grooves (8) and the elastic pins (9) are symmetrically arranged to penetrate each other.

2. The flexible coupling of a power tool holder according to claim 1, characterized in that: One end of the first spring (5) is fixedly connected to the inner wall of the insertion groove (2), and the other end of the first spring (5) is fixedly connected to the insertion block (3).

3. The flexible coupling of a power tool holder according to claim 1, characterized in that: The shock absorbing groove (7) is arranged in an elliptical shape, and the elastic pin (9) is arranged in close contact with the arc surface at one end of the shock absorbing groove (7).

4. The flexible coupling of a power tool holder according to claim 1, characterized in that: The surface of the elastic pin (9) is provided in a galvanized manner.

5. The flexible coupling of a power tool holder according to claim 1, characterized in that: Fixed blocks (10) are inserted on both sides of the elastic pin (9), a second movable groove (12) is provided inside the fixed block (10), a limiting protrusion (16) is provided inside the second movable groove (12), a second spring (15) is provided inside the second movable groove (12), a limiting groove (11) is provided on the outer wall of the elastic pin (9), an auxiliary groove (13) is provided at one end of the second movable groove (12), the limiting protrusion (16) passes through the auxiliary groove (13) and is inserted into the limiting groove (11), and a stabilizing pad (14) is fixedly connected to the outer end of the fixed block (10).

6. The flexible coupling of a power tool holder according to claim 5, characterized in that: The stabilizing pad (14) is arranged in an arc shape, and the inner wall of the stabilizing pad (14) is in contact with the outer wall of the coupling body (1).

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