Laser line projector transmission structure

Abstract

The present invention relates to a transmission structure of a laser line projector, comprising: a base, including a base body; a receiving cavity is provided on one side of the base body, and a rack is provided on a side wall of the base body corresponding to the receiving cavity; a fuselage, including a fuselage shell and a chassis installed at the bottom of the fuselage shell; one side of the fuselage shell is pivotally connected to the base body; the chassis corresponds to the receiving cavity; and a transmission assembly, including a motor, a reduction wheel group connected to the motor, a transmission wheel connected to the reduction wheel group, a clutch connected to the transmission wheel, and a driven wheel installed coaxially with the clutch. The above-mentioned transmission structure of the laser line projector has a simple structure and occupies a small space. The motor drives the driven wheel to rotate through the reduction wheel group, the transmission wheel and the clutch, and the driven wheel and the rack move relative to each other, thereby driving the fuselage shell and the base to rotate relative to each other, and the relative position change of the fuselage shell and the base can be accurately controlled, and the angle of the laser light can be automatically adjusted to improve accuracy and work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of laser measurement, in particular to a transmission structure of a laser line projector. Background Art

[0002] A laser line projector (also called a laser marking instrument or a laser level) uses a laser to project one or several very precise horizontal or vertical laser lines to replace the traditional pendant and ink line. It is increasingly widely used in construction, decoration, carpentry, bricklaying and other fields.

[0003] During the use of a general laser line projector, if the angle of the laser light needs to be adjusted, the entire instrument body needs to be manually held to change the position of the instrument body. However, the position of the instrument body cannot be controlled particularly accurately by manual change, and repeated adjustments are required, resulting in low work efficiency. In addition, most laser line projectors are equipped with support legs or bases at the bottom, which occupy a large space as a whole. It is also not very convenient to move it frequently during use. Summary of the invention

[0004] Based on this, the present invention provides a laser line projector transmission structure, which has a simple structure, occupies a small space, can automatically adjust the angle of the laser light, improve accuracy, and improve work efficiency.

[0005] In order to achieve the purpose of the present invention, the present invention adopts the following technical solution:

[0006] A laser line projector transmission structure, comprising:

[0007] The base comprises a base body; a receiving cavity is provided on one side of the base body, and a rack is provided on a side wall of the base body corresponding to the receiving cavity;

[0008] A body pivotally connected to the base; the body includes a body shell and a chassis installed at the bottom of the body shell; one side of the body shell is pivotally connected to the base body; the chassis corresponds to the accommodating cavity; and

[0009] A transmission assembly installed in the fuselage; the transmission assembly is installed on the chassis, the transmission assembly includes a motor, a reduction wheel group connected to the motor, a transmission wheel connected to the reduction wheel group, a clutch connected to the transmission wheel, and a driven wheel coaxially installed with the clutch; the clutch includes a connecting shaft, a fixed gear fixedly sleeved on the middle part of the connecting shaft, an end cap movably sleeved on one end of the connecting shaft, and a torsion spring clamped between the fixed gear and the end cap; the connecting shaft is connected to the driven wheel after passing through the chassis; the driven wheel rotates coaxially with the fixed gear, and the driven wheel is matched and meshed with the rack; the end cap is fixedly connected to the fuselage shell upward, and the end cap and the connecting shaft can rotate relative to each other; one end of the torsion spring is fixedly connected to the fixed gear, and the other end of the torsion spring is fixedly connected to the end cap.

[0010] The above-mentioned laser line projector transmission structure has a simple structure and occupies a small space. The motor drives the driven wheel to rotate through the reduction wheel group, the transmission wheel and the clutch. The driven wheel and the rack move relative to each other, thereby driving the body shell and the base to rotate relative to each other. The relative position change between the body shell and the base can be accurately controlled, and the angle of the laser light can be automatically adjusted to improve accuracy and work efficiency.

[0011] In one embodiment, the reduction gear set includes a plurality of reduction gears meshed in sequence; the reduction gear includes an input gear and an output gear connected to one side of the input gear; the number of teeth of the input gear is greater than the number of teeth of the output gear; the output gear of the preceding reduction gear matches and meshes with the input gear of the succeeding reduction gear.

[0012] In one embodiment, the input gear of the first reduction wheel is matched and meshed with the rotor sleeve of the motor, and the number of teeth of the input gear of the first reduction wheel is greater than the number of teeth of the rotor sleeve of the motor; the output gear of the last reduction wheel is matched and meshed with the transmission wheel, and the number of teeth of the output gear of the last reduction wheel is less than the number of teeth of the transmission wheel.

[0013] In one of the embodiments, the base further includes a rotating shaft connected to one end of the base body; one side of the body shell has a pivot portion, and the pivot portion is matched and sleeved with the rotating shaft.

[0014] In one of the embodiments, a limiting groove is provided on the base body corresponding to a side of the accommodating cavity away from the rack; a limiting pin is installed in the base body, and one end of the limiting pin is accommodated in the limiting groove; the limiting pin is used to connect the fuselage shell.

[0015] In one of the embodiments, a slide groove is provided on one side of the base body corresponding to the accommodating cavity, and the slide groove is close to the rack; the connecting shaft protrudes beyond the surface of the driven wheel and is inserted into the slide groove.

[0016] In one embodiment, the fixed gear, the end cap and the torsion spring are all located inside the body shell, and the driven wheel is located outside the body shell.

[0017] In one embodiment, the laser line projector transmission structure also includes a manual adjustment component connected to the transmission component; the manual adjustment component includes a knob, an output shaft coaxially connected to the knob, and a vertical gear connected to the end of the output shaft away from the knob; the vertical gear is matched and meshed with the reduction wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the transmission structure of the laser line projector according to one embodiment of the present invention;

[0019] Figure 2 for Figure 1 A three-dimensional schematic diagram of the transmission structure of the laser projection device from another perspective;

[0020] Figure 3 for Figure 1 The exploded schematic diagram of the transmission structure of the laser projection instrument shown;

[0021] Figure 4 for Figure 3 The exploded schematic diagram of the transmission structure of the laser line projector shown in another perspective;

[0022] Figure 5 for Figure 1 The exploded schematic diagram of the base in the transmission structure of the laser projection instrument shown;

[0023] Figure 6 for Figure 1 The internal linkage structure diagram of the laser line projector transmission structure shown;

[0024] Figure 7 for Figure 6 The schematic diagram of the combination of chassis, transmission components and manual adjustment components in the transmission structure of the laser line projector shown;

[0025] Figure 8 for Figure 7 The schematic diagram of the combination of the chassis, transmission assembly and manual adjustment assembly in the transmission structure of the laser line projector shown in another perspective.

[0026] Notes on the attached drawings:

[0027] 10-base, 11-base body, 12-rotating shaft, 13-accommodating cavity, 14-sliding groove, 15-rack, 16-limiting groove, 17-limiting pin;

[0028] 20-fuselage, 21-fuselage shell, 22-chassis, 23-pivot portion;

[0029] 30-transmission assembly, 31-motor, 32-transmission wheel, 33-clutch, 331-fixed gear, 332-end cap, 333-torsion spring, 34-driven wheel, 35-reduction wheel, 36-input gear, 37-output gear;

[0030] 40-manual adjustment assembly, 41-knob, 42-output shaft, 43-vertical gear. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0034] See also Figures 1 to 8 , which is a transmission structure of a laser line projector according to an embodiment of the present invention, includes a base 10, a body 20 pivotally connected to the base 10, and a transmission assembly 30 installed in the body 20; the transmission assembly 30 is used to drive the body 20 and the base 10 to rotate relative to each other.

[0035] The base 10 includes a base body 11 and a rotating shaft 12 connected to one end of the base body 11. Figure 5 As shown, a receiving cavity 13 is provided on one side of the base body 11 facing the fuselage 20, and a slide groove 14 is provided on one side of the base body 11 corresponding to the receiving cavity 13. A rack 15 is provided on one side wall of the base body 11 corresponding to the receiving cavity 13, and the rack 15 is close to the slide groove 14; a limiting groove 16 is provided on the other side of the base body 11 corresponding to the receiving cavity 13, as shown in FIG. Figure 6A limit pin 17 is installed in the base body 11 , one end of the limit pin 17 is accommodated in the limit slot 16 and is used to move along the limit slot 16 , and the other end of the limit pin 17 is used to connect to the fuselage 20 .

[0036] The body 20 includes a body shell 21 which is hollow and a chassis 22 installed at the bottom of the body shell 21. The body shell 21 is used to carry and install a laser transmitter (not shown) and a prism assembly (not shown). One side of the body shell 21 has a pivot portion 23, and the pivot portion 23 matches the sleeve shaft 12 to achieve the pivot connection between the body 20 and the base 10. The side of the body shell 21 close to the chassis 22 is used to connect the limit pin 17. The chassis 22 corresponds to the accommodating cavity 13, and the chassis 22 is used to carry and install the transmission assembly 30.

[0037] like Figures 6 to 8 As shown, the transmission assembly 30 is installed on the chassis 22, and the transmission assembly 30 includes a motor 31, a reduction wheel group connected to the motor 31, a transmission wheel 32 connected to the reduction wheel group, a clutch 33 connected to the transmission wheel 32, and a driven wheel 34 coaxially installed with the clutch 33; the driven wheel 34 rotates coaxially with the clutch 33, and the driven wheel 34 is matched and meshed with the rack 15.

[0038] The reduction wheel assembly includes a plurality of reduction wheels 35 meshed in sequence. In this embodiment, the number of reduction wheels 35 is three. Figure 5 and Figure 8 The reduction wheel 35 includes an input gear 36 and an output gear 37 connected to one side of the input gear 36; the number of teeth of the input gear 36 is greater than the number of teeth of the output gear 37. The output gear 37 of the previous reduction wheel 35 is matched and meshed with the input gear 36 of the next reduction wheel 35; the input gear 36 of the first reduction wheel 35 is matched and meshed with the rotor sleeve of the motor 31, and the number of teeth of the input gear 36 of the first reduction wheel 35 is greater than the number of teeth of the rotor sleeve of the motor 31; the output gear 37 of the last reduction wheel 35 is matched and meshed with the transmission wheel 32, and the number of teeth of the output gear 37 of the last reduction wheel 35 is less than the number of teeth of the transmission wheel 32.

[0039] In this embodiment, if Figure 7As shown, the clutch 33 includes a connecting shaft, a fixed gear 331 fixedly sleeved in the middle of the connecting shaft, an end cap 332 movably sleeved at one end of the connecting shaft, and a torsion spring 333 sandwiched between the fixed gear 331 and the end cap 332. The connecting shaft passes through the chassis 22 and is connected to the driven wheel 34, and the connecting shaft also protrudes beyond the surface of the driven wheel 34 and is inserted into the slide groove 14; the driven wheel 34 rotates coaxially with the fixed gear 331; the fixed gear 331, the end cap 332 and the torsion spring 333 are all located inside the body shell 21, and the driven wheel 34 is located outside the body shell 21. The end cap 332 is fixedly connected to the body shell 21 upward, and the end cap 332 and the connecting shaft can rotate relative to each other. One end of the torsion spring 333 is fixedly connected to the fixed gear 331, and the other end of the torsion spring 333 is fixedly connected to the end cap 332.

[0040] In actual use, the motor 31 drives the driven wheel 34 to rotate through the reduction wheel group, the transmission wheel 32 and the clutch 33, and the driven wheel 34 and the rack 15 move relative to each other, thereby driving the body shell 21 and the base 10 to rotate relative to each other, and the relative position change of the body shell 21 and the base 10 can be accurately controlled to adjust the rotation angle of the laser light. Since the transmission assembly 30 is installed inside the body shell 21, the volume of the entire laser line projector remains unchanged and does not increase the space occupied. At the same time, the extreme position of the torsion spring 333 can be used to limit the rotation range of the body shell 21 to prevent the body shell 21 from being damaged due to excessive rotation.

[0041] Furthermore, the transmission mechanism of the laser line projector of the present invention further includes a manual adjustment component 40 connected to the transmission component 30. The manual adjustment component 40 includes a knob 41, an output shaft 42 coaxially connected to the knob 41, and a vertical gear 43 connected to one end of the output shaft 41 away from the knob 41; the vertical gear 43 is matched and meshed with the reduction wheel 35. Specifically, the vertical gear 43 is matched and meshed with the input gear 36 of the first reduction wheel 35. When the motor 31 is not started, the knob 41 can also be manually rotated to control the body shell 21 to rotate.

[0042] The above-mentioned laser projection instrument transmission structure has a simple structure and occupies a small space. The motor 31 drives the driven wheel 34 to rotate through the reduction wheel group, the transmission wheel 32 and the clutch 33. The driven wheel 34 and the rack 15 move relative to each other, thereby driving the body shell 21 and the base 10 to rotate relative to each other. The relative position change between the body shell 21 and the base 10 can be accurately controlled, and the angle of the laser light can be automatically adjusted to improve accuracy and work efficiency.

[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A laser line projection instrument transmission structure, characterized in that: include: The base comprises a base body; a receiving cavity is provided on one side of the base body, and a rack is provided on a side wall of the base body corresponding to the receiving cavity; A body pivotally connected to the base; the body includes a body shell and a chassis installed at the bottom of the body shell; one side of the body shell is pivotally connected to the base body; the chassis corresponds to the accommodating cavity; and A transmission assembly installed in the fuselage; the transmission assembly is installed on the chassis, the transmission assembly includes a motor, a reduction wheel group connected to the motor, a transmission wheel connected to the reduction wheel group, a clutch connected to the transmission wheel, and a driven wheel coaxially installed with the clutch; the clutch includes a connecting shaft, a fixed gear fixedly sleeved on the middle part of the connecting shaft, an end cap movably sleeved on one end of the connecting shaft, and a torsion spring clamped between the fixed gear and the end cap; the connecting shaft is connected to the driven wheel after passing through the chassis; the driven wheel rotates coaxially with the fixed gear, and the driven wheel is matched and meshed with the rack; the end cap is fixedly connected to the fuselage shell upward, and the end cap and the connecting shaft can rotate relative to each other; one end of the torsion spring is fixedly connected to the fixed gear, and the other end of the torsion spring is fixedly connected to the end cap.

2. The laser line projection instrument transmission structure according to claim 1, characterized in that: The reduction wheel group includes a plurality of reduction wheels meshed in sequence; the reduction wheel includes an input gear and an output gear connected to one side of the input gear; the number of teeth of the input gear is greater than the number of teeth of the output gear; the output gear of the preceding reduction wheel is matched and meshed with the input gear of the succeeding reduction wheel.

3. The laser line projection instrument transmission structure according to claim 2 is characterized in that: The input gear of the first reduction wheel is matched and meshed with the rotor sleeve of the motor, and the number of teeth of the input gear of the first reduction wheel is greater than the number of teeth of the rotor sleeve of the motor; the output gear of the last reduction wheel is matched and meshed with the transmission wheel, and the number of teeth of the output gear of the last reduction wheel is less than the number of teeth of the transmission wheel.

4. The laser line projection instrument transmission structure according to claim 1, characterized in that: The base also includes a rotating shaft connected to one end of the base body; one side of the fuselage shell has a pivot portion, and the pivot portion is matched and sleeved with the rotating shaft.

5. The laser line projection instrument transmission structure according to claim 1, characterized in that: A limiting groove is provided on the base body corresponding to a side of the accommodating cavity away from the rack; a limiting pin is installed in the base body, and one end of the limiting pin is accommodated in the limiting groove; the limiting pin is used to connect the fuselage shell.

6. The laser line projection instrument transmission structure according to claim 1, characterized in that: A slide groove is provided on one side of the base body corresponding to the accommodating cavity, and the slide groove is close to the rack; the connecting shaft protrudes beyond the surface of the driven wheel and is inserted into the slide groove.

7. The laser line projection instrument transmission structure according to claim 1, characterized in that: The fixed gear, the end cap and the torsion spring are all located inside the body shell, and the driven wheel is located outside the body shell.

8. The laser line projection instrument transmission structure according to claim 1, characterized in that: It also includes a manual adjustment component connected to the transmission component; the manual adjustment component includes a knob, an output shaft coaxially connected to the knob, and a vertical gear connected to one end of the output shaft away from the knob; the vertical gear is matched and meshed with the reduction wheel.

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