Telescopic rotating line projector

Abstract

The present application relates to the technical field of measuring instruments, in particular to a telescopic rotary line projector, comprising: a storage cylinder, a core cylinder arranged in the storage cylinder and capable of ascending and then horizontally rotating relative to the storage cylinder; a swing body hinged at the top of the core cylinder, a guiding piece fixed at the bottom of the core cylinder, a bearing piece coaxially arranged in the guiding piece, and the bearing piece linearly connected with the inner wall of the storage cylinder; when the core cylinder ascends to the limit state relative to the storage cylinder, the bearing piece ascends along with the guiding piece, and there is a gap between the top of the bearing piece and the bottom of the swing body, which can allow the swing body to be freely adjusted; when the core cylinder horizontally rotates relative to the storage cylinder, the connection between the guiding piece and the bearing piece, the rotation of the guiding piece drives the bearing piece to ascend again, the top of the bearing piece abuts against the bottom of the swing body, and the swing body is fixed in the core cylinder, that is, the line projector can realize telescopic storage, and the swing body can be fixed in the working state through rotation, so that the swing body can be fixed in time.

Description

Technical Field

[0001] This invention relates to the field of measuring instrument technology, specifically to a telescopic rotary line projector. Background Technology

[0002] Laser line projectors, relying on the linear propagation characteristics of lasers, can project high-precision horizontal, vertical, oblique lines or three-dimensional planar laser reference lines / points onto target surfaces such as walls, floors, and workpieces. Their core function is to replace traditional tools such as chalk lines, spirit levels, and plumb bobs, providing a rapid and accurate reference for spatial positioning. This significantly improves the efficiency and accuracy of line laying, leveling, and positioning operations, effectively reducing human error. They are an indispensable core auxiliary measurement tool in scenarios such as building construction, decoration and installation, and industrial debugging.

[0003] Chinese patent CN104515512A (title: Square Laser Projector) discloses a square laser projector. This product has a square shape and a relatively large overall volume, taking up a lot of space when stored. Therefore, the applicant attempted to improve it into a telescopic laser projector to reduce storage space and improve transportation convenience. However, after improving the laser projector to a telescopic structure, it is necessary to achieve real-time fixation of its internal swing body. Specifically, the swing body must be fixed in the stored and locked states, and real-time leveling adjustment must be achieved in the working state.

[0004] In summary, how to achieve timely fixation of the internal swing body while reducing the storage space occupied by the laser line projector has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to achieve timely fixation of the internal pendulum body while reducing the storage space occupied by the laser line projector;

[0006] To address the aforementioned technical problems, this solution provides the following technical solution:

[0007] This invention is a telescopic rotary projector, comprising: a storage cylinder, and a core cylinder disposed within the storage cylinder and capable of rising and then rotating horizontally relative to the storage cylinder;

[0008] A swing body is hinged to the top of the inner core tube, a guide is fixed to the bottom of the inner core tube, and a supporting member is coaxially arranged inside the guide member. The supporting member is linearly guided to the inner wall of the storage tube.

[0009] When the movement cylinder rises to its limit relative to the storage cylinder, the supporting member rises with the guide member, and the movement cylinder rotates horizontally relative to the storage cylinder. The rotation of the guide member drives the supporting member to rise a second time, and the top of the supporting member abuts against the bottom of the pendulum body, fixing the pendulum body inside the movement cylinder.

[0010] Furthermore, the guide member is an annular structure with a through hole in the center, and at least one guide protrusion is provided on the inner wall of the guide member. The guide protrusion is inclined along the circumference of the guide member, and horizontal sections extend outward from both ends of the guide protrusion.

[0011] The abutment part is located inside the through hole, and the outer wall of the abutment is provided with a support block that supports the horizontal section or the guide protrusion.

[0012] Furthermore, an anti-detachment block is provided at the end of the horizontal section.

[0013] Furthermore, a retaining ring is provided on the inner wall of the guide member and above the guide protrusion; an elastic member is provided between the retaining ring and the abutment member.

[0014] Furthermore, the supporting member includes an outer sleeve and an inner sleeve coaxially disposed within the outer sleeve. The height of the inner sleeve is higher than the height of the outer sleeve, and one bottom end of the elastic member is supported at the horizontal plane formed between the inner sleeve and the outer sleeve.

[0015] Furthermore, a rubber component is provided at the top of the inner sleeve.

[0016] Furthermore, the supporting member includes a battery casing that accommodates the battery, a vertical slide rail protruding from the inner wall of the storage tube, and a groove that mates with the slide rail on the outer wall of the battery casing.

[0017] Furthermore, the inner wall of the storage tube is provided with a vertical sliding groove and a horizontal sliding groove. The top of the vertical sliding groove is connected to the horizontal sliding groove, and positioning grooves are provided at the top and bottom of the vertical sliding groove and the end of the horizontal sliding groove.

[0018] A plunger ball head is provided on the outer wall of the guide member. The plunger ball head cooperates with the positioning groove to keep the core tube in the upper limit position, lower limit position, or limit position after rotation relative to the storage tube.

[0019] Furthermore, a fixing block is provided on the bottom wall of the storage tube. When the movement tube descends to its limit position relative to the storage tube, the abutment abuts against the top of the fixing block, and the top of the abutment abuts against the bottom of the swing body.

[0020] The beneficial effects of this invention are as follows: This invention is a telescopic rotary projector. When the core cylinder rises to its limit relative to the storage cylinder, the supporting member rises along with the guide member. There is a gap between the top of the supporting member and the bottom of the pendulum body, which allows the pendulum body to be freely adjusted. When the core cylinder rotates horizontally relative to the storage cylinder, the connection between the guide member and the supporting member converts the rotational force of the guide member into the upward force of the supporting member. The rotation of the guide member drives the supporting member to rise a second time. The top of the supporting member abuts against the bottom of the pendulum body, fixing the pendulum body inside the core cylinder. That is, this projector can achieve telescopic storage and fix the pendulum body in the working state by rotation, thus fixing the pendulum body in a timely manner. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the structure in the working state of this embodiment;

[0023] Figure 2 This is a cross-sectional view of the storage tube;

[0024] Figure 3 This is a structural schematic diagram of the supporting component;

[0025] Figure 4 This is a structural schematic diagram of the guide component;

[0026] Figure 5 This is a sectional view of the guide component;

[0027] Figure 6 This is a schematic diagram of the structure in the locked state in this embodiment;

[0028] Figure 7 This is a schematic diagram of the structure in the storage state of this embodiment;

[0029] In the diagram, 1-storage tube, 11-slide rail, 12-vertical slide groove, 13-horizontal slide groove, 14-positioning groove, 15-fixing block, 2-mechanical tube, 3-swing body, 4-guide component, 41-guide protrusion, 42-horizontal section, 43-anti-detachment block, 44-retaining ring, 45-plunger ball head, 5-holding component, 51-support block, 52-outer sleeve, 53-inner sleeve, 55-battery shell, 56-slide groove, 6-elastic component, 7-rubber component. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0031] See Figure 1 , 67. This embodiment is a telescopic rotary projector, including: a storage cylinder 1, and a core cylinder 2 disposed inside the storage cylinder 1 and capable of rising and rotating horizontally relative to the storage cylinder 1, that is, the core cylinder 2 can be axially extended and retracted relative to the storage cylinder 1 to store the core cylinder 2 in the storage cylinder 1, or the core cylinder 2 can be rotated after rising to the upper limit position relative to the storage cylinder 1; a pendulum 3 is hinged at the top of the core cylinder 2, and the pendulum 3 is always in a vertical state when in operation;

[0032] The bottom of the core cylinder 2 is fixed with a guide member 4, which moves up and down and rotates synchronously with the core cylinder 2; a support member 5 is coaxially arranged inside the guide member 4, and the support member 5 is linearly connected to the inner wall of the storage cylinder 1, that is, the support member 5 only moves up and down in a linear motion relative to the storage cylinder 1 and does not rotate.

[0033] When the core cylinder 2 rises to its limit relative to the storage cylinder 1, the line projector is in working condition. The supporting member 5 rises with the guide member 4. There is a gap between the top of the supporting member 5 and the bottom of the pendulum 3, which allows the pendulum 3 to be freely adjusted.

[0034] When the user needs to stop adjusting the pendulum 3, that is, fix the pendulum 3 inside the core cylinder 2, the wire projector is in a locked state. Specifically, the core cylinder 2 rotates horizontally relative to the storage cylinder 1. Due to the connection between the guide 4 and the abutment 5, the rotation of the guide 4 drives the abutment 5 to rise twice. The top of the abutment 5 abuts against the bottom of the pendulum 3, fixing the pendulum 3 inside the core cylinder 2. At this time, the pendulum 3 cannot be adjusted freely, and the pendulum 3 moves with the movement of the core cylinder 2.

[0035] In summary, this projector can be retracted and stored, and the pendulum 3 can be locked in the working state by rotation.

[0036] See Figure 3 , 4 5. In some possible embodiments, the guide member 4 is an annular structure with a through hole in the center. At least one guide protrusion 41 is provided on the inner wall of the guide member 4. The guide protrusion 41 is inclined along the circumference of the inner wall of the guide member 4. The two ends of the guide protrusion 41 extend outward with horizontal sections 42. The abutment member 5 is partially located in the through hole. The outer wall of the abutment member 5 is provided with a support block 51 that supports the horizontal section 42 or the guide protrusion 41.

[0037] In this embodiment, there are four guide protrusions 41, which are disposed on the inner wall of the guide member 4. The guide protrusions 41 have an inclined structure with the left side higher than the right side, and the end of the guide protrusions 41 extends outward with a horizontal section 42. The abutment member 5 is coaxially and movably sleeved in the guide member 4, and the support block 51 of the abutment member 5 is supported on the guide protrusions 41 or the horizontal section 42.

[0038] When the core cylinder 2 rises to its limit relative to the storage cylinder 1, the support block 51 is supported on the horizontal section 42 on the right side, and the line projector is in working condition at this time. The core cylinder 2 rotates relative to the storage cylinder 1, and the guide 4 rotates synchronously. The support block 51 moves along the guide protrusion 41 and is supported on the horizontal section 42 on the left side. That is, through the cooperation of the guide protrusion 41 and the support block 51, the abutment 5 is lifted a second time. The abutment 5 abuts against the bottom of the pendulum 3, thereby fixing the pendulum 3. At this time, the line projector is in a locked state.

[0039] See Figure 5 In some possible embodiments, an anti-detachment block 43 is provided at the end of the horizontal segment 42;

[0040] In this embodiment, the corresponding support block 51 can only move between the left anti-detachment block 43 and the right anti-detachment block 43 to prevent the support block 51 from detaching from the horizontal section 42. Similarly, the anti-detachment block 43 is set to limit the extreme rotation angle of the mechanism cylinder 2 relative to the storage cylinder 1.

[0041] See Figure 1 , 5 In some possible embodiments, a retaining ring 44 is provided on the inner wall of the guide member 4 and above the guide protrusion 41; an elastic member 6 is provided between the retaining ring 44 and the abutment member 5;

[0042] In this embodiment, by setting the elastic element 6, when the core cylinder 2 is in the upper limit position (working state), the supporting element 5 is stably set on the guide element 4 under the action of the elastic element 6, so as to avoid the supporting element 5 shaking during operation and affecting the working accuracy of the line projector; of course, when the line projector is in the locked state, the supporting element 5 overcomes the elastic force of the elastic element 6, and the elastic element 6 contracts.

[0043] See Figure 5 In some possible embodiments, the abutment 5 includes an outer sleeve 52 and an inner sleeve 53 coaxially disposed inside the outer sleeve 52, the height of the inner sleeve 53 being higher than the height of the outer sleeve 52; when in the locked state, the top of the inner sleeve 53 abuts against the swing body 3, and one end of the bottom of the elastic member 6 is supported on the horizontal plane formed between the inner sleeve 53 and the outer sleeve 52.

[0044] In this embodiment, a support block 51 is provided at the outer sleeve 52, and the top of the inner sleeve 53 can abut against the bottom of the swing body 3. The outer sleeve 52 and the inner sleeve 53 form a support plane for the elastic member 6.

[0045] See Figure 1 In some possible embodiments, a rubber element 7 is provided on the top of the inner sleeve 53;

[0046] In this embodiment, the rubber component 7 is made of flexible material, and the rubber component 7 abuts against the bottom of the swing body 3, thus avoiding rigid contact between the supporting component 5 and the swing body 3.

[0047] See Figure 2 , 3 In some possible embodiments, the supporting member 5 includes a battery case 55 for accommodating the battery, the inner wall of the storage tube 1 is provided with a vertical slide rail 11 protruding out, and the outer wall of the battery case 55 is provided with a groove 56 that cooperates with the slide rail 11.

[0048] In this embodiment, the cooperation between the slide groove 56 and the slide rail 11 enables the holding member 5 to move up and down relative to the storage cylinder 1.

[0049] See Figure 2 , 4 5. In some possible embodiments, the inner wall of the storage cylinder 1 is provided with a vertical slide groove 12 and a horizontal slide groove 13. The top of the vertical slide groove 12 communicates with the horizontal slide groove 13. The top and bottom of the vertical slide groove 12 and the end of the horizontal slide groove 13 are provided with positioning grooves 14. The outer wall of the guide member 4 is provided with a plunger ball head 45. The plunger ball head 45 cooperates with the positioning groove 14 to keep the core cylinder 2 relative to the storage cylinder 1 in an upper limit position or a lower limit position or a locked state after rotation.

[0050] In this embodiment, the vertical slide 12 and the horizontal slide 13 are connected and are roughly L-shaped. The top and near the bottom of the vertical slide 12 and the right side of the horizontal slide 13 are provided with left and right positioning grooves 14. The plunger ball head 45 can slide in the vertical slide 12 or the horizontal slide 13. The ball head of the plunger ball head 45 can enter the corresponding positioning groove 14 to keep the line projector in a stored, working or locked state.

[0051] See Figure 2 In some possible embodiments, a fixing block 15 is provided on the bottom wall of the storage tube 1. When the movement tube 2 descends to the limit position relative to the storage tube 1, the abutment 5 abuts against the top of the fixing block 15, and the top of the abutment 5 abuts against the bottom of the swing body 3.

[0052] In this embodiment, when the core cylinder 2 descends relative to the storage cylinder 1, the abutment 5 abuts against the top of the fixing block 15. At this time, the abutment 5 stops moving, and the core cylinder 2 continues to drive the guide 4 to descend. The elastic element 6 is compressed until the abutment 5 abuts against the bottom of the pendulum 3, thus fixing the pendulum 3 inside the core cylinder 2. At this time, the line projector is in the storage state.

[0053] In summary, the line projector in this embodiment has three states:

[0054] 1. Storage status: See Figure 7 The movement cylinder 2 is stored in the storage cylinder 1. At this time, the plunger ball head 45 is located in the positioning groove 14 at the bottom of the vertical slide groove 12. The support 5 is lifted by the fixing block 15, and the top of the support 5 abuts against the bottom of the swing body 3, thereby fixing the swing body 3.

[0055] 2. Working status: See Figure 1 When the mechanism cylinder 2 moves upward relative to the storage cylinder 1, the plunger ball head 45 is located in the positioning groove 14 at the top of the vertical slide groove 12. The guide 4 and the support 5 rise with the mechanism cylinder 2, and there is a gap between the top of the support 5 and the bottom of the pendulum 3. When the line projector moves, the pendulum 3 is always in the plumb line state.

[0056] 3. Locked state: See Figure 6 The mechanism cylinder 2 rotates horizontally relative to the storage cylinder 1. At this time, the plunger ball head 45 is located in the positioning groove 14 at the end of the horizontal slide groove 13. The guide 4 rotates relative to the abutment 5. The steering force of the guide 4 is converted into the upward force of the abutment 5. The abutment 5 rises and abuts the rubber part 7 against the bottom of the pendulum body 3, fixing the pendulum body 3 inside the mechanism cylinder 2. At this time, the pendulum body 3 moves with the line projector.

[0057] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A telescopic rotary projector, characterized in that, include: Storage tube (1), and a mechanism tube (2) disposed inside the storage tube (1) and capable of rising and rotating horizontally relative to the storage tube (1). A swing body (3) is hinged to the top of the inner core cylinder (2), and a guide member (4) is fixed to the bottom of the inner core cylinder (2). A support member (5) is coaxially arranged inside the guide member (4), and the support member (5) is linearly guided to the inner wall of the storage cylinder (1). When the core cylinder (2) rises to its limit relative to the storage cylinder (1), the supporting member (5) rises with the guide member (4), and the core cylinder (2) rotates horizontally relative to the storage cylinder (1). The guide member (4) rotates and drives the supporting member (5) to rise a second time. The top of the supporting member (5) abuts against the bottom of the pendulum body (3), fixing the pendulum body (3) inside the core cylinder (2). The guide (4) is an annular structure with a through hole in the center. At least one guide protrusion (41) is provided on the inner wall of the guide (4). The guide protrusion (41) is inclined along the circumference of the guide (4). The two ends of the guide protrusion (41) extend outward with horizontal sections (42). The abutment (5) is located in the through hole, and the outer wall of the abutment (5) is provided with a support block (51) supporting the horizontal section (42) or the guide protrusion (41). A retaining ring (44) is provided on the inner wall of the guide member (4) and above the guide protrusion (41); an elastic member (6) is provided between the retaining ring (44) and the abutment member (5). The supporting member (5) includes an outer sleeve (52) and an inner sleeve (53) coaxially disposed inside the outer sleeve (52). The height of the inner sleeve (53) is higher than the height of the outer sleeve (52). One end of the bottom of the elastic member (6) is supported on the horizontal plane formed between the inner sleeve (53) and the outer sleeve (52).

2. The telescopic rotary projector according to claim 1, characterized in that, An anti-detachment block (43) is provided at the end of the horizontal section (42).

3. The telescopic rotary projector according to claim 1, characterized in that, The top of the inner sleeve (53) is provided with a rubber part (7).

4. The telescopic rotary projector according to claim 1, characterized in that, The supporting member (5) includes a battery case (55) for accommodating the battery, and a vertical slide rail (11) protrudes from the inner wall of the storage tube (1). The outer wall of the battery case (55) is recessed with a slide groove (56) that cooperates with the slide rail (11).

5. The telescopic rotary line projector according to claim 1, characterized in that, The inner wall of the storage tube (1) is provided with a vertical slide groove (12) and a horizontal slide groove (13). The top of the vertical slide groove (12) is connected to the horizontal slide groove (13). The top and bottom of the vertical slide groove (12) and the end of the horizontal slide groove (13) are provided with positioning grooves (14). A plunger ball head (45) is provided on the outer wall of the guide member (4). The plunger ball head (45) cooperates with the positioning groove (14) to keep the core cylinder (2) relative to the storage cylinder (1) at the upper limit position, the lower limit position, or the locking position after rotation.

6. The telescopic rotary projector according to claim 1, characterized in that, The inner bottom wall of the storage tube (1) is provided with a fixing block (15). When the core tube (2) descends to the limit position relative to the storage tube (1), the abutment (5) abuts against the top of the fixing block (15), and the top of the abutment (5) abuts against the bottom of the swing body (3).

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