Lamp hole reaming positioner for suspended ceiling

Abstract

The utility model relates to a lamp hole reaming positioner for a suspended ceiling, which comprises a positioning frame provided with scales along a first linear direction and a second linear direction which are perpendicular to each other, and a positioning axis perpendicular to and intersected with the first linear direction and the second linear direction; each positioning assembly comprises two positioning devices located on the two sides of the positioning axis, the two positioning devices of one positioning assembly are arranged in the first linear direction and can move in the first linear direction, and the two positioning devices of the other positioning assembly are arranged in the second linear direction and can move in the second linear direction; a first locking assembly is arranged between the positioning device and the positioning frame, and the positioning device comprises a positioning block; the positioning batten is connected to the positioning frame, the positioning axis penetrates through the positioning batten, and a positioning mark for marking the positioning axis is arranged on the positioning batten. The positioner can quickly finish accurate positioning of the axis of the lamp hole, improves the accuracy of the reaming position, and is suitable for large-batch reaming construction.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a lamp hole enlarging positioner for a suspended ceiling. Background Art

[0002] During the decoration process, it is often encountered that the opening size of the downlight / spotlight is too small. In addition, in many interior renovation or fine decoration upgrade projects, it is often encountered that only the lamps are replaced when the ceiling is refurbished, and it is very common for the downlight / spotlight to need to be enlarged in situ.

[0003] Hole expansion construction is generally carried out using a hole expander, but since the center of the original hole opening position is difficult to accurately locate, the hole expansion position is prone to large deviations, resulting in unsightly construction or inconvenience in subsequent lamp installation. Utility Model Content

[0004] Based on the above description, the utility model provides a lamp hole expansion positioner for suspended ceilings to solve the problem that the hole expansion construction in the related technology is generally carried out using a hole expander. Since the center of the original hole opening position is difficult to accurately locate, the hole expansion position is prone to large deviations, resulting in unsightly construction or inconvenience in subsequent lamp installation.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The present application provides a lamp hole expansion locator for a suspended ceiling, and the technical solution adopted is as follows:

[0007] A lamp hole expansion positioner for a suspended ceiling, comprising:

[0008] A positioning frame, on which scales are respectively provided along a first linear direction and a second linear direction, the first linear direction and the second linear direction are perpendicular to each other, and the positioning frame includes a positioning axis that is perpendicular to and intersects the first linear direction and the second linear direction;

[0009] Two groups of positioning components, the positioning components include two positioning devices connected to the positioning frame, the two positioning devices in one group of the positioning components are located on both sides of the positioning axis, wherein the two positioning devices in one group of the positioning components are arranged along a first straight line direction and can move along the first straight line direction, and the two positioning devices in another group of the positioning components are arranged along a second straight line direction and can move along the second straight line direction, a first locking component for locking the positioning device is provided between the positioning device and the positioning frame, and the positioning device includes a positioning block, and the positioning block is used to pass through an existing lamp hole;

[0010] A positioning wooden square is detachably connected to the positioning frame and a positioning axis passes through the positioning wooden square. A positioning mark for marking the positioning axis is provided on the positioning wooden square.

[0011] Preferably, the positioning device includes a limit block connected to the positioning block, and the limit block is spaced apart from the positioning frame in the direction of the positioning axis. When the positioning block passes through the existing lamp hole and moves to abut against the side wall of the lamp hole, the positioning frame and the limit block are located on both sides of the ceiling and are in contact with the ceiling.

[0012] Preferably, the limiting block can move relative to the positioning block along the direction of the positioning axis, and a second locking assembly for locking the limiting block is provided between the positioning block and the limiting block.

[0013] Preferably, the positioning frame includes two positioning rods, the two positioning rods extend in a first straight line direction and a second straight line direction respectively, the two positioning rods are fixed by bolts, the two groups of positioning components are respectively arranged on the two positioning rods, the positioning block is connected with a connecting ring, the connecting ring is arranged outside the positioning rod, the connecting ring can move axially along the positioning rod, and the first locking assembly is arranged between the positioning rod and the connecting ring.

[0014] Preferably, the interior of the positioning rod is hollow, and the first locking assembly comprises:

[0015] A plurality of first locking structures, wherein the first locking structure comprises a first locking ball, a first elastic member and a first locking hole, the first locking ball and the first elastic member are arranged in the positioning rod, the first elastic member connects the first locking ball and the positioning rod, the first locking hole is arranged on the side wall of the positioning rod, the first locking ball is embedded in the first locking hole and can move relative to the positioning rod, the first locking ball comprises a locking state in which a part of the locking ball protrudes out of the positioning rod and an unlocking state in which the first locking ball does not protrude out of the positioning rod, and is suitable for keeping the first locking ball in the locking state through the first elastic member, and the first locking ball overcomes the elastic force of the first elastic member when moving from the unlocking state to the locking state, and the plurality of first locking structures are spaced apart along the length direction of the positioning rod;

[0016] The first locking groove is formed on the inner wall of the connecting ring and is suitable for limiting the movement of the connecting ring relative to the positioning rod by embedding the first locking ball in the first locking groove when the first locking ball is in a locking state.

[0017] Preferably, the first locking structure includes two first locking holes and two first locking balls, the two first locking holes are respectively arranged on the opposite side walls of the positioning rod, the two first locking balls are respectively arranged in the two first locking holes, the elastic member is arranged between the two first locking balls, and the first locking grooves are provided on the opposite side inner walls of the connecting ring.

[0018] Preferably, the limit block is connected to an adjusting part, the positioning block is connected to an adjusting ring sleeved outside the adjusting part, the adjusting part can move relative to the adjusting ring along the positioning axis direction, and the second locking assembly is arranged between the adjusting part and the adjusting ring and is used to lock the adjusting part.

[0019] Preferably, the positioning axis passes through the origin of the scale.

[0020] Preferably, the contact surface between the positioning block and the side wall of the lamp hole is set to be a rough surface.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0022] 1. The present application includes a positioning frame, a positioning assembly and a positioning wood. Two positioning devices in the positioning assembly are located on both sides of the positioning axis. The positioning devices of the two groups of positioning assemblies can move in the first straight line direction and the second straight line direction respectively. When in use, the positioning blocks of the positioning devices pass through the lamp hole, and the positioning blocks are moved to contact the side wall of the lamp hole. At the same time, according to the scale set on the positioning frame, the two positioning devices in one group of positioning assemblies are adjusted to have the same distance from the positioning axis. At this time, the four positioning blocks are distributed in a circle with the positioning axis as the center line. When the positioning blocks contact the side wall of the lamp hole, the positioning axis is the axis of the lamp hole. After that, after the positioning device is locked by the first locking assembly, the axis of the lamp hole can be indicated according to the positioning mark marked on the positioning wood. At the same time, the positioning wood can be used as a support for the reamer, and the construction personnel can use the reamer to perform the reaming operation. The positioning device of the present application has high positioning accuracy, improves the accuracy of the reaming position, ensures the normal progress of subsequent construction, and can quickly complete the precise positioning of the existing lamp hole axis. It is suitable for large-scale reaming construction and improves construction efficiency.

[0023] 2. The present application sets a limit block. When in use, the limit block passes through the lamp hole and cooperates with the positioning frame to clamp on both sides of the ceiling, thereby fixing the entire locator on the ceiling. When expanding the hole, there is no need to manually fix the locator, and the limit block can be moved relative to the positioning block along the positioning axis direction, so that it can adapt to ceilings of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a lamp hole enlarging positioner for a suspended ceiling provided by an embodiment of the utility model in use;

[0025] Figure 2 A schematic diagram of the structure of a positioning rod with a slot provided in a lamp hole expansion positioner for a suspended ceiling provided in an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the structure of a positioning rod with a fixing groove in a lamp hole enlarging positioner for a suspended ceiling provided by an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of a first locking structure in a lamp hole enlarging positioner for a suspended ceiling provided by an embodiment of the utility model;

[0028] Figure 5 A schematic diagram of the structure of a positioning device in a lamp hole expansion positioner for a suspended ceiling provided by an embodiment of the utility model;

[0029] Figure 6 A schematic plan view of a lamp hole enlarging positioner for a suspended ceiling provided by an embodiment of the utility model in a use state;

[0030] Figure 7 A schematic side view of a lamp hole enlarging positioner for a suspended ceiling provided by an embodiment of the utility model in a use state;

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Positioning frame; 11. Positioning rod; 111. First locking hole; 12. Fixing groove; 2. Positioning device; 21. Positioning block; 211. Adjusting ring; 22. Connecting ring; 221. First locking groove; 23. Limiting block; 231. Bottom plate; 232. Side plate; 2321. Second locking hole; 3. Positioning wood; 4. First locking ball; 5. First elastic member; 6. Second locking ball; 7. Second elastic member; 8. Scale; 9. First guide tube. DETAILED DESCRIPTION

[0033] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application 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 disclosure of the present application more thorough and comprehensive.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0035] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0036] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0037] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0038] Reference Figure 1-7As shown, an embodiment of the present application provides a lamp hole expansion positioner for a suspended ceiling, which includes a positioning frame 1, two groups of positioning components and a positioning wood 3 arranged on the positioning frame 1, the positioning frame 1 is provided with scales 8 along a first linear direction and a second linear direction respectively, the first linear direction and the second linear direction are perpendicular, the positioning frame 1 includes a positioning axis that is perpendicular to and intersects the first linear direction and the second linear direction; the positioning component includes two positioning devices 2 connected to the positioning frame 1, the two positioning devices 2 in one group of positioning components are located on both sides of the positioning axis, wherein the two positioning devices 2 of one group of positioning components are arranged along the first linear direction and can be moved along the first linear direction, and the two positioning devices 2 of the other group of positioning components are arranged along the second linear direction and can be moved along the second linear direction, a first locking component for locking the positioning device 2 is provided between the positioning device 2 and the positioning frame 1, the positioning device 2 includes a positioning block 21, and the positioning block 21 is used to pass through an existing lamp hole; the positioning wood 3 is detachably connected to the positioning frame 1 and the positioning axis passes through the positioning wood 3, and a positioning mark for marking the positioning axis is provided on the positioning wood 3.

[0039] Reference Figure 1 and Figure 6-7 As shown, when in use, the positioning block 21 of the positioning device 2 is passed through the lamp hole, and the positioning block 21 is moved to contact the side wall of the lamp hole. At the same time, according to the scale 8 set on the positioning frame 1, two positioning devices 2 in a group of positioning components are adjusted to be at the same distance from the positioning axis. At this time, the four positioning blocks 21 are distributed in a circle with the positioning axis as the center line. When the positioning block 21 contacts the side wall of the lamp hole, the positioning axis is the axis of the lamp hole. After that, the positioning device 2 is locked by the first locking assembly, and the axis of the lamp hole can be indicated according to the positioning mark marked on the positioning wooden square 3. At the same time, the positioning wooden square 3 can be used as a support for the hole reamer, and the construction personnel can use the hole reamer to perform the hole reaming operation.

[0040] Reference Figure 1-3 As shown, the positioning frame 1 includes two positioning rods 11, and the two positioning rods 11 extend along the first straight direction and the second straight direction respectively, and the two positioning rods 11 are fixed by bolts; specifically, a slot is opened in the middle of one of the positioning rods 11 for the other positioning rod 11 to be embedded, and the positioning rod 11 without the slot is embedded in the slot and then the two positioning rods 11 are fixed by bolts to form the positioning frame 1, so that the two positioning rods 11 form a cross-shaped positioning frame 1, and a fixing groove 12 for the positioning curtain wall to be embedded and installed is set on the side of the positioning rod 11 without the slot away from the other positioning rod 11, and the positioning wooden square 3 is embedded in the fixing groove 12 and clamped in the fixing groove 12.

[0041] Reference Figure 1 and Figure 6-7As shown, the two positioning components are respectively arranged on the two positioning rods 11, and the four positioning blocks 21 are located on the side of the positioning rod 11 close to the fixing groove 12, so that the positioning wood 3 and the positioning block 21 can pass through the lamp hole at the same time. The positioning block 21 is connected to a connecting ring 22 arranged outside the positioning rod 11, and the connecting ring 22 can move axially along the positioning rod 11, so as to achieve the purpose of moving the positioning block 21 relative to the positioning frame 1, and the corresponding first locking component is arranged between the positioning rod 11 and the connecting ring 22 for locking the connecting ring 22.

[0042] Reference Figure 2 and Figure 4-5 As shown, the positioning rod 11 is an internal hollow structure, and the first locking assembly includes a plurality of first locking structures and a first locking groove 221. The first locking structure includes a first locking ball 4, a first elastic member 5 and a first locking hole 111. The first locking ball 4 and the first elastic member 5 are arranged in the positioning rod 11. The first elastic member 5 connects the first locking ball 4 and the positioning rod 11. The first locking hole 111 is opened on the side wall of the positioning rod 11. The first locking ball 4 is embedded in the first locking hole 111 and can move relative to the positioning rod 11. The first locking ball 4 includes a partially protruding In a locked state outside the positioning rod 11 and an unlocked state not protruding outside the positioning rod 11, it is suitable for keeping the first locking ball 4 in the locked state through the first elastic member 5, and the first locking ball 4 overcomes the elastic force of the first elastic member 5 when moving from the unlocked state to the locked state, and multiple first locking structures are distributed at intervals along the length direction of the positioning rod 11; the first locking groove 221 is opened on the inner wall of the connecting ring 22, and is suitable for limiting the movement of the connecting ring 22 relative to the positioning rod 11 by embedding the first locking ball 4 in the first locking groove 221 when the first locking ball 4 is in the locked state.

[0043] Reference Figure 4 As shown, specifically, the positioning rod 11 has a rectangular cross-section and one side surface is parallel to the positioning axis. The first locking hole 111 is opened on the side wall of the positioning rod 11 and is parallel to the positioning axis. The first locking hole 111 is a hole with a circular cross-section, and the axis of the first locking hole 111 is perpendicular to the side wall of the positioning rod 11 on which the first locking hole 111 is opened. Correspondingly, the first locking ball 4 is embedded in the first locking hole 111, and the first locking hole 111 can move relative to the positioning rod 11 along the axis direction of the first locking hole 111. The first elastic member 5 adopts a compression spring, and the axis of the compression spring is parallel to the moving direction of the first locking ball 4.

[0044] When the compression spring is in an unstressed state, the first locking ball 4 partially protrudes out of the first locking hole 111 to protrude from the surface of the positioning rod 11. When the connecting ring 22 moves axially along the positioning rod 11, the first locking ball 4 can be driven to overcome the elastic force of the compression spring and move into the positioning rod 11 to an unlocked state. When the connecting ring 22 moves to the position of the first locking hole 111 corresponding to the position of the first locking groove 221, the elastic force of the compression spring causes the first locking ball 4 to protrude out of the first locking hole 111 and embed into the first locking groove 221, thereby limiting the movement of the connecting ring 22 relative to the positioning rod 11 through the first locking ball 4. Since the first locking ball 4 is spherical, when it is necessary to adjust the position of the connecting ring 22, a larger force can be applied to the connecting ring 22 to drive the first locking ball 4 to move into the positioning rod 11, so that the position adjustment and locking operations of the positioning block 21 are simple and convenient, and more convenient to use.

[0045] In order to ensure the locking effect, the first locking structure is configured to include two first locking holes 111 and two first locking balls 4. The two first locking holes 111 are respectively arranged on the opposite side walls of the positioning rod 11, and the two first locking balls 4 are respectively arranged in the two first locking holes 111. The first elastic member 5 is arranged between the two first locking balls 4, and the inner walls on the opposite sides of the connecting ring 22 are provided with first locking grooves 221. In this way, when the connecting ring 22 is locked, the two first locking balls 4 are both in a locked state and are respectively embedded in the two first locking grooves 221, so that the connecting ring 22 is locked in a set position.

[0046] Specifically, the first locking structure also includes a first guide tube 9 arranged in the positioning rod 11, the first guide tube 9 is coaxial with the first locking hole 111, the two ends of the first guide tube 9 are respectively fixed to the inner walls on the opposite sides of the positioning rod 11, and the two ends of the first guide tube 9 are respectively connected to the two first locking holes 111, the compression spring and the two first locking balls 4 are both arranged in the first guide tube 9, the two ends of the compression spring are respectively fixed to the two first locking balls 4, and the inner diameter of the first guide tube 9 is set to be slightly larger than the diameter of the first locking ball 4, so as to guide and limit the first locking ball 4 through the first guide tube 9.

[0047] Reference Figure 1 , 5As shown in Figure 7, further, the positioning device 2 also includes a limit block 23 connected to the positioning block 21. The limit block 23 is spaced apart from the positioning frame 1 in the direction of the positioning axis. When the positioning block 21 passes through the existing lamp hole and moves to abut against the side wall of the lamp hole, the positioning frame 1 and the limit block 23 are located on both sides of the ceiling and are in contact with the ceiling. Specifically, the limit block 23 is connected to the end of the positioning block 21 away from the positioning frame 1. When the positioning block 21 passes through the lamp hole, the limit block 23 also passes through the lamp hole. When the positioning block 21 moves to contact the side wall of the lamp hole, the limit block 23 and the positioning frame 1 are on both sides of the ceiling and in contact with the ceiling, so that the positioner is fixed to the ceiling by the positioning frame 1 and a plurality of limit blocks 23, without the need to manually fix the positioner.

[0048] Reference Figure 5 As shown, further, in order to adapt to ceilings of different thicknesses, the limit block 23 is configured to be movable relative to the positioning block 21 along the positioning axis direction, and a second locking assembly for locking the limit block 23 is provided between the positioning block 21 and the limit block 23. In this way, the distance between the limit block 23 and the positioning frame 1 can be adjusted according to the thickness of the ceiling, so that the limit block 23 and the positioning frame 1 can be clamped on both sides of the ceiling.

[0049] Reference Figure 5 As shown, in order to realize the adjustment function of the limit block 23, the limit block 23 is connected with an adjustment part, the positioning block 21 is connected with an adjustment ring 211 sleeved outside the adjustment part, the adjustment part can move relative to the adjustment ring 211 along the positioning axis direction, and the second locking assembly is arranged between the adjustment part and the adjustment ring 211 and is used to lock the adjustment part. Specifically, the adjustment part includes a bottom plate 231 and two side plates 232, the bottom plate 231 and the side plates 232 are parallel to the positioning axis, the two side plates 232 are parallel to each other and perpendicular to the bottom plate 231, the two side plates 232 are located on both sides of the bottom plate 231, the adjustment part formed by the bottom plate 231 and the two side plates 232 is penetrated in the adjustment ring 211, and the two side plates 232 are in contact with the inner wall of the adjustment ring 211.

[0050] Reference Figure 5As shown, further, the second locking assembly includes a plurality of second locking structures and second locking grooves, the second locking structure includes two second locking balls 6, a second elastic member 7 and two second locking holes 2321, the two second locking holes 2321 are respectively opened on the two side plates 232, the two second locking balls 6 are respectively embedded in the two second locking holes 2321, and the second locking balls 6 can move in a direction perpendicular to the plane of the side plates 232, the second locking balls 6 can move to a side protruding from the two side plates 232 away from each other, or can move to a side not protruding from the two side plates 232 away from each other, the second elastic member 7 is arranged between the two second locking balls 6 and connected to the two second locking balls 6, suitable for The second locking ball 6 is maintained to protrude from the side of the two side plates 232 away from each other by the second elastic member 7, and the second locking ball 6 can overcome the elastic force of the second elastic member 7 and move to a state where it does not protrude from the side of the two side plates 232 away from each other, and a plurality of second locking structures are distributed at intervals along the direction of the positioning axis; a second locking groove is provided on the inner wall where the adjusting ring 211 and the two side plates 232 are in contact with each other, and is suitable for when the second locking ball 6 protrudes from the side of the two side plates 232 away from each other, the second locking ball 6 is embedded in the second locking groove to limit the movement of the side plate 232 relative to the connecting ring 22, thereby limiting the relative movement of the adjusting ring 211 and the adjusting part, so that the limit block 23 and the positioning block 21 are relatively fixed.

[0051] Reference Figure 5 As shown, specifically, the second elastic member 7 is also a compression spring, and its axis is perpendicular to the plane of the side plate 232. The second locking structure also includes a second guide tube (not shown in the figure) arranged between the two side plates 232. The second guide tube is coaxial with the second elastic member 7. The two ends of the second guide tube are respectively fixed to the two side plates 232, and the two ends of the second guide tube are respectively connected to the two second locking holes 2321. The second locking ball 6 and the second elastic member 7 are both arranged in the second guide tube.

[0052] Reference Figure 2 and Figure 6 As shown, further, when setting the scale 8, the scale 8 is set on the positioning rod 11 and axially along the positioning rod 11, and the positioning axis passes through the origin of the scale 8, so that when adjusting the positions of the two positioning blocks 21 of a positioning assembly, it is convenient to adjust them to the same distance from the positioning axis.

[0053] Reference Figure 5 As shown, when setting the positioning block 21, the contact surface between the positioning block 21 and the side wall of the lamp hole is set to a rough surface to increase the friction with the side wall of the lamp hole, so as to allow the positioner to rotate. At the same time, the side surface is set to an arc shape to better match the lamp hole and improve the positioning accuracy.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lamp hole expansion positioner for a suspended ceiling, characterized in that: include: A positioning frame (1) having scales (8) respectively arranged along a first linear direction and a second linear direction, the first linear direction and the second linear direction being perpendicular to each other, the positioning frame (1) comprising a positioning axis perpendicular to and intersecting the first linear direction and the second linear direction; Two groups of positioning components, the positioning components comprising two positioning devices (2) connected to the positioning frame (1), the two positioning devices (2) in one group of the positioning components being located on both sides of a positioning axis, wherein the two positioning devices (2) in one group of the positioning components are arranged along a first straight line direction and can move along the first straight line direction, and the two positioning devices (2) in the other group of the positioning components are arranged along a second straight line direction and can move along the second straight line direction, a first locking component for locking the positioning device (2) is provided between the positioning device (2) and the positioning frame (1), the positioning device (2) comprising a positioning block (21), the positioning block (21) being used to pass through an existing lamp hole; A positioning wooden block (3) is detachably connected to the positioning frame (1) and a positioning axis passes through the positioning wooden block (3). A positioning mark for marking the positioning axis is provided on the positioning wooden block (3).

2. The lamp hole enlarging positioner for ceiling according to claim 1, characterized in that: The positioning device (2) comprises a limit block (23) connected to the positioning block (21); the limit block (23) is spaced apart from the positioning frame (1) in the direction of the positioning axis; when the positioning block (21) passes through the existing lamp hole and moves to abut against the side wall of the lamp hole, the positioning frame (1) and the limit block (23) are located on both sides of the suspended ceiling and are in contact with the suspended ceiling.

3. The lamp hole enlarging positioner for ceiling according to claim 2, characterized in that: The limit block (23) can move relative to the positioning block (21) along the positioning axis direction, and a second locking component for locking the limit block (23) is provided between the positioning block (21) and the limit block (23).

4. The lamp hole enlarging positioner for ceiling according to claim 1, characterized in that: The positioning frame (1) comprises two positioning rods (11), the two positioning rods (11) respectively extend in a first straight direction and a second straight direction, the two positioning rods (11) are fixed by bolts, two groups of positioning components are respectively arranged on the two positioning rods (11), the positioning block (21) is connected with a connecting ring (22), the connecting ring (22) is arranged outside the positioning rod (11), the connecting ring (22) can move axially along the positioning rod (11), and the first locking component is arranged between the positioning rod (11) and the connecting ring (22).

5. The lamp hole expansion positioner for suspended ceiling according to claim 4, characterized in that: The interior of the positioning rod (11) is hollow, and the first locking assembly comprises: A plurality of first locking structures, wherein the first locking structure comprises a first locking ball (4), a first elastic member (5) and a first locking hole (111), the first locking ball (4) and the first elastic member (5) are arranged in the positioning rod (11), the first elastic member (5) connects the first locking ball (4) and the positioning rod (11), the first locking hole (111) is opened on the side wall of the positioning rod (11), the first locking ball (4) is embedded in the first locking hole (111) and The first locking ball (4) can move relative to the positioning rod (11), and the first locking ball (4) includes a locked state in which it partially protrudes outside the positioning rod (11) and an unlocked state in which it does not protrude outside the positioning rod (11). The first locking ball (4) is suitable for being kept in the locked state through the first elastic member (5), and the first locking ball (4) overcomes the elastic force of the first elastic member (5) when moving from the unlocked state to the locked state. A plurality of the first locking structures are spaced apart along the length direction of the positioning rod (11); A first locking groove (221) is provided on the inner wall of the connecting ring (22) and is suitable for limiting the movement of the connecting ring (22) relative to the positioning rod (11) by embedding the first locking ball (4) in the first locking groove (221) when the first locking ball (4) is in a locked state.

6. The lamp hole enlarging positioner for ceiling according to claim 5, characterized in that: The first locking structure comprises two first locking holes (111) and two first locking balls (4); the two first locking holes (111) are respectively arranged on opposite side walls of the positioning rod (11); the two first locking balls (4) are respectively arranged in the two first locking holes (111); the elastic member is arranged between the two first locking balls (4); and the first locking grooves (221) are respectively arranged on opposite side inner walls of the connecting ring (22).

7. The lamp hole enlarging positioner for ceiling according to claim 3, characterized in that: The limit block (23) is connected to an adjusting portion, the positioning block (21) is connected to an adjusting ring (211) sleeved outside the adjusting portion, the adjusting portion can move relative to the adjusting ring (211) along the positioning axis, and the second locking assembly is arranged between the adjusting portion and the adjusting ring (211) and is used to lock the adjusting portion.

8. The lamp hole enlarging positioner for suspended ceiling according to claim 1, characterized in that: The positioning axis passes through the origin of the scale (8).

9. The lamp hole enlarging positioner for ceiling according to claim 1, characterized in that: The contact surface between the positioning block (21) and the side wall of the lamp hole is set as a rough surface.

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