Gun drill gear shifting mechanism and gun drill carrying same

Abstract

The utility model discloses a gun drill gear shifting mechanism and a gun drill carrying the same. The gun drill comprises a drill bit and a motor driving the drill bit to rotate, the gear shifting mechanism comprises a speed changer, the output end of the motor is connected with the speed changer, and the output end of the speed changer is connected with the drill bit; the first end of the adjusting rod is connected with the transmission; the second end of the adjusting rod is connected with the shifting block, and the shifting block horizontally moves to drive the adjusting rod to swing so as to adjust the transmission ratio of the transmission; the buckling and pressing plate is arranged on the shifting block, and the buckling and pressing plate is configured to press the adjusting rod so that the second end of the adjusting rod can be fixedly connected with the shifting block; according to the scheme, the adjusting rod is pressed by the buckling and pressing plate, so that the magnitude of interference between the adjusting rod and the shifting block is improved, connection between the adjusting rod and the shifting block is firmer, and the situation that the shifting block is out of gear in the process of driving the adjusting rod to swing is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric tools, in particular to a gun drill gear shifting mechanism and a gun drill equipped with the same. BACKGROUND

[0002] The gun drill is a common handheld electric tool. Many existing gun drills have the function of adjusting gears. By adjusting different gears, the speed of the drill bit can be controlled to facilitate use in various environments. The gear shifting mechanism in the gun drill is driven by a shifting block to swing a connecting rod of a gearbox, and the transmission ratio of the connecting rod is controlled. However, due to design defects, the gear shifting mechanism in the existing gun drill often causes gear shifting failure, affecting normal use of the equipment. CONTENT OF THE UTILITY MODEL

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present application is to provide a gun drill gear shifting mechanism and a gun drill equipped with the same.

[0004] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0005] In a first aspect, the present application provides a gun drill gear shifting mechanism, the gun drill comprising a drill bit and a motor driving the drill bit to rotate, the gear shifting mechanism comprising:

[0006] a gearbox, the output end of the motor being connected to the gearbox, and the output end of the gearbox being connected to the drill bit;

[0007] a shifting rod, the first end of the shifting rod being connected to the gearbox;

[0008] a shifting block, the second end of the shifting rod being connected to the shifting block, and the shifting block being translated to swing the shifting rod to adjust the transmission ratio of the gearbox;

[0009] a pressing plate, the pressing plate being arranged on the shifting block, and the pressing plate being configured to press the shifting rod to fixedly connect the second end of the shifting rod to the shifting block.

[0010] Further, the first surface of the shifting block is provided with a protruding part, the second surface of the shifting block is provided with a clamping groove, and the second end of the shifting rod is arranged in the clamping groove. The user drives the protruding part on the shifting block to swing the shifting rod, thereby adjusting the transmission ratio of the gearbox, and achieving the effect of controlling the speed of the drill bit.

[0011] Further, the pressing plate is arranged at the opening part of the clamping groove and presses on the shifting rod, and the clamping groove and the pressing plate form a closed area for accommodating the shifting rod. The shifting rod is located in the closed area, and the three groove walls of the pressing plate and the clamping groove respectively clamp the shifting rod from all around, so that the shifting rod is fixedly connected to the shifting block.

[0012] Further, the pressing plate is detachably connected with the shifting block; the pressing plate can be quickly detached from the clamping piece when the equipment is maintained.

[0013] Further, the shifting block is provided with a mounting groove, and the end of the pressing plate is inserted into the mounting groove so that the pressing plate is fixedly arranged on the shifting block.

[0014] Further, the mounting groove comprises a first mounting groove and a second mounting groove,

[0015] The first end of the pressing plate is provided with a first inserting part, and the second end of the pressing plate is provided with a second inserting part,

[0016] The first inserting part is inserted into the first mounting groove, and the second inserting part is inserted into the second mounting groove.

[0017] Further, the pressing plate is in a concave shape structure, the two side protruding parts are respectively the first inserting part and the second inserting part, and the middle part is arranged at the opening of the clamping groove.

[0018] Further, the bending parts on the two sides of the pressing plate are provided with bending radians.

[0019] Further, the pressing plate is in a metal sheet structure.

[0020] In the second aspect, the application further discloses a gun drill, comprising the gun drill shifting mechanism.

[0021] Beneficial effects

[0022] The gun drill shifting mechanism and the gun drill provided with the same are designed, the pressing plate is arranged at the clamping part of the adjusting rod and the shifting block, the adjusting rod is pressed by the pressing plate, the interference amount between the adjusting rod and the shifting block is increased, the connection between the adjusting rod and the shifting block is more fastened, and the situation that the shifting block is out of gear during swinging of the adjusting rod is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the technical scheme of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical scheme of the present application, and do not constitute a limitation on the technical scheme of the present application. The shapes and sizes of the components in the drawings do not reflect the true proportions, and the purpose is only to schematically illustrate the content of the present application.

[0024] Figure 1 It is a schematic view of the shifting mechanism in the existing gun drill.

[0025] Figure 2 It is a schematic view of the shifting mechanism in the gun drill designed by the present application.

[0026] Figure 3 It is the overall structure sectional view of the gun drill in one embodiment of the utility model.

[0027] Figure 4 It is the local structure sectional view of the gun drill in one embodiment of the utility model.

[0028] Figure 5 It is the local schematic view of the file adjusting mechanism in one embodiment of the utility model Figure 1 .

[0029] Figure 6 It is the local schematic view of the file adjusting mechanism in one embodiment of the utility model Figure 2 .

[0030] The components in the figure are as follows: 1, shell; 2, knob; 3, transmission; 4, adjusting rod; 5, drill bit; 6, motor; 7, buckling plate; 71, first plug-in part; 72, second plug-in part; 8, clamping groove; 9, first installation groove; 10, second installation groove; 11, protruding part. DETAILED DESCRIPTION

[0031] The above scheme is further described below in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the present application and do not limit the scope of the present application. The implementation conditions used in the embodiments can be further adjusted as the conditions of a specific manufacturer, and the implementation conditions not mentioned are usually the conditions in a conventional experiment.

[0032] Unless otherwise defined, technical terms or scientific terms used in the embodiments of the present disclosure shall have the ordinary meaning understood by a person of ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms used in the embodiments of the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different components. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. In this document, "electrically connected" includes the case where the constituent elements are connected together through an element having a certain electrical effect. The element having a certain electrical effect is not particularly limited as long as it can perform the transmission of electrical signals between the connected constituent elements. The element having a certain electrical effect may, for example, be an electrode or a wiring, or a switching element such as a transistor, or another functional element such as a resistor, an inductor, or a capacitor. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0033] In the present application, the terms "upper", "lower", "inner", "middle" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0034] SUMMARY

[0035] As described in the background, the existing gear shifting mechanism in the gun drill often appears to be out of gear due to structural design defects, such as Figure 1 As shown, a clamping groove composed of two clamping blocks is provided on the lower surface of the dial block 2, and the upper end of the adjusting rod 4 is clamped in the clamping groove, and the lower end of the adjusting rod 4 is located in the transmission 3. When the user shifts the dial block 2 to translate, the dial block 2 drives the adjusting rod 4 to swing, thereby adjusting the transmission ratio of the transmission 3 to achieve the function of gear shifting.

[0036] The dial block is made of plastic material, and the adjusting rod is made of metal material. The dial block needs to be interference fit with the adjusting rod to enable the dial block to drive the adjusting rod to swing. However, the dial block made of plastic material is prone to deformation, and the connection part of the dial block and the adjusting rod often comes loose, resulting in the situation of being out of gear. For example, the dial block is pulled to gear 2, but the actual swing amplitude of the adjusting rod makes the gun drill work at gear 1.

[0037] In view of the above problems, the inventor improves the gear shifting mechanism of the gun drill, as shown in Figure 2 A clamping groove is provided below the clamping groove, and the clamping groove is clamped by the clamping groove. The adjusting rod is pressed to increase the interference between the adjusting rod and the dial block, so that the connection between the adjusting rod and the dial block is more firm, and the dial block is prevented from being out of gear during the process of driving the adjusting rod to swing.

[0038] Based on the above idea, the present application will be described below in conjunction with the drawings.

[0039] An embodiment of the present application discloses a gun drill, as shown in Figure 3 and Figure 4 The gun drill comprises a housing 1, a motor 6 and a transmission 3 arranged in the housing 1, a drill bit 5 arranged at the front end of the housing 1, the output end of the motor 6 connected with the transmission 3, the output end of the transmission 3 connected with the drill bit 5, a dial block 2 arranged on the housing 1, a protruding part 11 arranged at the upper end of the dial block 2, a clamping groove 8 arranged at the lower end of the dial block 2, and the dial block 2 connected with the transmission 3 through an adjusting rod 4. The user drives the adjusting rod 4 to swing by shifting the protruding part 11 at the upper end of the dial block 2, adjusts the transmission ratio of the transmission 3, and achieves the effect of controlling the rotating speed of the drill bit 5;

[0040] The lower end of the dial block 2 is provided with a buckling plate 7, which buckles the adjusting rod 4, thereby increasing the interference between the adjusting rod 4 and the dial block 2, and making the connection between the adjusting rod 4 and the dial block 2 more secure, so as to avoid the dial block from being out of gear during the process of driving the adjusting rod to swing.

[0041] In some embodiments, as shown in Figure 5 The buckling plate 7 is fixedly arranged at the opening part of the clamping groove 8 and forms a closed area with the clamping groove 8 to accommodate the upper end of the adjusting rod 4; the adjusting rod 4 is located in the closed area, and the buckling plate 7 and the three side walls of the clamping groove 8 clamp the adjusting rod 4 from all around, so as to fixedly connect the adjusting rod 4 and the dial block 2.

[0042] In some embodiments, as shown in Figure 6 The buckling plate 7 and the dial block 2 are connected in a detachable manner, so that the buckling plate 7 can be quickly detached from the dial block 2 when the equipment is maintained; the connection structure between the buckling plate 7 and the dial block 2 adopts a plug-in mode, which is as follows:

[0043] Two mounting grooves are arranged on the dial block 2, which are a first mounting groove 9 and a second mounting groove 10,

[0044] Two plug-in blocks corresponding to the mounting grooves are arranged at both ends of the buckling plate 7, which are a first plug-in part 71 and a second plug-in part 72; when the buckling plate 7 is installed, the first plug-in part 71 and the second plug-in part 72 are respectively plugged into the first mounting groove 9 and the second mounting groove 10, so as to fixedly install the buckling plate 7 on the dial block 2.

[0045] In some embodiments, as shown in Figure 6 The buckling plate 7 is in a concave shape structure, and the two side protruding parts are the first plug-in part 71 and the second plug-in part 72, and the middle part is arranged at the opening of the clamping groove 8.

[0046] In some embodiments, as shown in Figure 6 The bending parts on both sides of the buckling plate 7 have bending radii.

[0047] In some embodiments, the buckling plate 7 is in a metal sheet structure, which has a certain strength and elasticity, and exerts pressure on the buckling plate 7, and the buckling plate 7 has elasticity and can act on the adjusting rod 4 through elastic force.

[0048] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent transformation or modification made in the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A gun drill shifting mechanism, said gun drill comprising a drill head and a motor rotating said drill head, characterized in that, The gear shifting mechanism comprises: a transmission, the output end of the motor being connected to the transmission, the output end of the transmission being connected to the drill bit; an adjusting rod, the first end of the adjusting rod being connected to the transmission; a shifting block, the second end of the adjusting rod being connected to the shifting block, the shifting block being used to drive the adjusting rod to swing by translation so as to adjust the transmission ratio of the transmission; a pressing plate, the pressing plate being arranged on the shifting block, and the pressing plate being configured to press the adjusting rod so as to fix the second end of the adjusting rod to the shifting block.

2. The gear shifting mechanism for gun drill according to claim 1, wherein the first surface of the shifting block is provided with a protruding part, the second surface of the shifting block is provided with a clamping groove, and the second end of the adjusting rod is arranged in the clamping groove.

3. The gear shifting mechanism for gun drill according to claim 2, wherein the pressing plate is arranged at the opening part of the clamping groove and is pressed on the adjusting rod, and the clamping groove and the pressing plate form a closed area for accommodating the adjusting rod.

4. The gear shifting mechanism for gun drill according to claim 2, wherein the pressing plate is detachably connected to the shifting block.

5. The gear shifting mechanism for gun drill according to claim 4, wherein the shifting block is provided with a mounting groove, and the end of the pressing plate is inserted into the mounting groove so as to fix the pressing plate on the shifting block.

6. The gear shifting mechanism for gun drill according to claim 5, wherein the mounting groove comprises a first mounting groove and a second mounting groove, the first end of the pressing plate is provided with a first plug-in part, and the second end of the pressing plate is provided with a second plug-in part, the first plug-in part is inserted into the first mounting groove, and the second plug-in part is inserted into the second mounting groove.

7. The gear shifting mechanism for gun drill according to claim 6, wherein the pressing plate is in a concave shape, the two side protruding parts are respectively the first plug-in part and the second plug-in part, and the middle part is arranged at the opening part of the clamping groove.

8. The gear shifting mechanism for gun drill according to claim 7, wherein the bending parts on the two sides of the pressing plate are provided with bending radii.

9. The gear shifting mechanism for gun drill according to claim 1, wherein the pressing plate is in a metal sheet shape.

10. A gun drill characterised in that, The gear shifting mechanism for gun drill according to any one of claims 1-9.

Images