Telescopic hollowing hammer for wall detection

Abstract

The utility model discloses a telescopic hollowing hammer for wall detection, which comprises a hand lever, the inner cavity of the hand lever is in sliding connection with a first sliding pipe, the inner cavity of the first sliding pipe is in sliding connection with a second sliding pipe, and the front end of the second sliding pipe is fixedly connected with a ball head; long springs are arranged in inner cavities of the hand rod, the first sliding pipe and the second sliding pipe, the rear end of the hand rod is in threaded connection with a threaded plug, and the front end and the rear end of each long spring are tightly attached to the second sliding pipe and the threaded plug respectively. The hand rod, the first sliding pipe, the second sliding pipe and the ball head are used in cooperation to knock a wall, whether hollowing exists or not is judged according to knocking sound, meanwhile, the long spring, the fixing pipe and the locking assembly are used in cooperation, so that the first sliding pipe and the second sliding pipe stretch out by the maximum length, and the hollowing effect is achieved. When a wall body at a higher position is knocked and detected, the purposes that the use length is adjustable, stretching and retracting are smooth, and blocking is prevented can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of wall inspection technology, and in particular relates to a retractable hollow hammer for wall inspection. Background Technology

[0002] A hollow hammer is a tool used to detect whether there are hollow areas on the surface of building materials such as walls, floors, and tiles. Hollow areas refer to the separation between building materials (such as tiles, plaster layers, etc.) and the base layer (such as walls, floors) due to poor adhesion, resulting in the formation of voids inside. Hollow areas not only affect the appearance but may also cause materials to fall off, posing a safety hazard.

[0003] Hollow spot hammers determine the presence of hollow spots by tapping the surface and listening to the sound. However, during use, the telescopic sleeves rely on the retractable end of the tube to maintain their extension length, which is difficult to control. After use, there may be cases where the sleeves are over-extended, making them unable to retract or requiring considerable effort to retract. Furthermore, dust in the environment can easily cause the telescopic sleeves to jam if it reaches the retractable end. Therefore, there is a need for a telescopic hollow spot hammer for wall detection that uses an automatic spring-loaded mechanism to facilitate user adjustment of the length. It also employs a vertical locking structure with a constant locking force to prevent jamming between the telescopic sleeves. Utility Model Content

[0004] The purpose of this invention is to provide a retractable hollow hammer for wall detection. It uses an automatic spring-loaded mechanism to facilitate user adjustment of the length. It also employs a vertical locking structure with constant locking force to prevent jamming between the telescopic components, thus solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A retractable hollow hammer for wall detection includes a handle: a first sliding tube is slidably connected to the inner cavity of the handle, a second sliding tube is slidably connected to the inner cavity of the first sliding tube, a ball head is fixedly connected to the front end of the second sliding tube, a long spring is provided in the inner cavity of the handle, the first sliding tube and the second sliding tube, a threaded plug is threadedly connected to the rear end of the handle, the front end and the rear end of the long spring are respectively tightly fitted with the second sliding tube and the threaded plug, a fixing tube is fixedly connected to the front side of the top of the handle, a locking component is provided in the inner cavity of the fixing tube, a linkage block is welded to the rear side of the top of the second sliding tube, and an arc-shaped sliding groove adapted to the linkage block is opened on the top of the first sliding tube.

[0006] Preferably, the locking assembly includes a limiting pin slidably connected to the inner cavity of the fixed tube, a first insertion hole adapted to the limiting pin is provided on the rear side of the top of the first sliding tube, and a second insertion hole adapted to the limiting pin is provided on the front side of the top of the second sliding tube.

[0007] Preferably, a short spring is sleeved on the surface of the limiting pin, and the top and bottom ends of the short spring are welded to the fixing tube and the limiting pin, respectively.

[0008] Preferably, anti-detachment pins are welded to both sides of the limiting pin, and limiting grooves adapted to the anti-detachment pins are opened on both sides of the fixing tube. A pull ring is rotatably connected to the top of the limiting pin.

[0009] Preferably, guide rails are welded to both sides of the first sliding tube, and guide grooves adapted to the guide rails are provided on both sides of the inner cavity of the hand lever.

[0010] Preferably, the surface of the handle is covered with a shock-absorbing sleeve, which is a foam sleeve.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model uses a handle, a first sliding tube, a second sliding tube, and a ball head to strike the wall and determine whether there is a hollow sound based on the sound of the strike. At the same time, the first and second sliding tubes can be extended to their maximum length by using a long spring, a fixed tube, and a locking component to strike the wall at a higher position. This achieves the purpose of adjustable length and smooth extension and retraction to prevent jamming.

[0013] 2. This utility model, through the setting of the locking component, wherein the cooperation of the limiting pin and the first insertion hole limits and locks the first sliding tube, thereby realizing long-distance wall knocking detection. Through the cooperation of the limiting pin and the second insertion hole, the second sliding tube is limited and locked, thereby realizing long-distance wall knocking detection. At the same time, under the elastic force of the short spring, the limiting pin can be actively moved downward to insert into the inner cavity of the first insertion hole or the second insertion hole.

[0014] 3. This utility model uses the guide slide and guide groove together to limit and guide the first sliding tube, preventing the first sliding tube from rotating in the inner cavity of the handle, so that the limiting pin can be accurately inserted into the inner cavity of the first insertion hole. Attached Figure Description

[0015] in:

[0016] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of a first sliding tube, a second sliding tube, and a ball head according to an embodiment of the present invention;

[0018] Figure 3This is a three-dimensional exploded view of a handle, a long spring, and a threaded plug according to an embodiment of the present invention;

[0019] Figure 4 This is an exploded perspective view of the handle, the first sliding tube, and the locking assembly according to one embodiment of the present invention.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Hand lever, 2. First sliding tube, 3. Second sliding tube, 4. Ball head, 5. Long spring, 6. Threaded plug, 7. Fixed tube, 8. Locking assembly, 81. Limit pin, 82. First insertion hole, 83. Second insertion hole, 84. Short spring, 9. Linkage block, 10. Arc-shaped slide groove, 11. Guide slide bar, 12. Guide slide groove, 13. Shock-absorbing sleeve. Detailed Implementation

[0022] In the following description, embodiments of the retractable hollow hammer for wall detection of this utility model will be described with reference to the accompanying drawings.

[0023] Figure 1-4This invention illustrates a retractable hollow-sounding hammer for wall detection, comprising a handle 1. A first sliding tube 2 is slidably connected to the inner cavity of the handle 1. A shock-absorbing sleeve 13, made of foam, is fitted onto the surface of the handle 1. Guide strips 11 are welded to both sides of the first sliding tube 2. Guide grooves 12, adapted to the guide strips 11, are formed on both sides of the inner cavity of the handle 1. Through the cooperation of the guide strips 11 and the guide grooves 12, the first sliding tube 2 is limited and guided, preventing rotation within the inner cavity of the handle 1, thereby... The limiting pin 81 can be accurately inserted into the inner cavity of the first insertion hole 82. The inner cavity of the first sliding tube 2 is slidably connected to the second sliding tube 3. The front end of the second sliding tube 3 is fixedly connected to the ball head 4. The inner cavities of the lever 1, the first sliding tube 2, and the second sliding tube 3 are provided with long springs 5. The rear end of the lever 1 is threadedly connected to a threaded plug 6. The front and rear ends of the long spring 5 are respectively tightly fitted with the second sliding tube 3 and the threaded plug 6. The front side of the top of the lever 1 is fixedly connected to a fixing tube 7. The inner cavity of the fixing tube 7 is provided with a locking assembly 8. The locking assembly 8 includes components slidably connected to the fixing tube 7. The inner cavity has a limiting pin 81. A first insertion hole 82, matching the limiting pin 81, is opened on the rear side of the top of the first sliding tube 2. A second insertion hole 83, matching the limiting pin 81, is opened on the front side of the top of the second sliding tube 3. A short spring 84 is sleeved on the surface of the limiting pin 81. The top and bottom ends of the short spring 84 are welded to the fixed tube 7 and the limiting pin 81, respectively. Anti-detachment pins are welded to both sides of the limiting pin 81. Limiting grooves, matching the anti-detachment pins, are opened on both sides of the fixed tube 7. A pull ring is rotatably connected to the top of the limiting pin 81. Through the setting of the locking assembly 8, the limiting pin 81... The first sliding tube 2 is locked in place by the cooperation of the limiting pin 81 and the second socket 83, thereby enabling long-distance wall knocking detection. The second sliding tube 3 is locked in place by the cooperation of the limiting pin 81 and the second socket 83, thereby enabling long-distance wall knocking detection. At the same time, under the elastic force of the short spring 84, the limiting pin 81 can move downward and insert into the inner cavity of the first socket 82 or the second socket 83. A linkage block 9 is welded to the rear side of the top of the second sliding tube 3, and an arc-shaped groove 10 adapted to the linkage block 9 is opened on the top of the first sliding tube 2.

[0024] Working principle: When using this invention, the user moves the first sliding tube 2 and the second sliding tube 3 by holding the handle 1, causing the ball head 4 to strike a nearby wall surface to detect hollow areas. When striking a higher or farther wall surface, the user pulls the pull ring at the top of the limiting pin 81, causing the limiting pin 81 to move upward within the cavity of the fixed tube 7, simultaneously disengaging the limiting pin 81 from the cavity of the second insertion hole 83. At this time, the long spring 5 rebounds, pushing the second sliding tube 3 until the second sliding tube 3... After the first sliding tube 2 slides to its maximum length, the linkage block 9 reaches the front side of the arc-shaped slide groove 10. Under the contact action between the surface of the linkage block 9 and the front side of the arc-shaped slide groove 10, the first sliding tube 2 slides out from the inner cavity of the handle 1, so that the first sliding tube 2 and the second sliding tube 3 extend to their maximum length. Then, the user releases the pull ring, the short spring 84 rebounds and resets, and drives the limiting pin 81 to slide downward, so that the limiting pin 81 is inserted into the inner cavity of the first insertion hole 82, thereby limiting and locking the first sliding tube 2.

[0025] In summary, this retractable hollow-sound hammer for wall detection uses the combined use of handle 1, first sliding tube 2, second sliding tube 3, and ball head 4 to tap the wall and determine the presence of hollows based on the tapping sound. Simultaneously, the combined use of long spring 5, fixed tube 7, and locking assembly 8 allows the first and second sliding tubes 2 and 3 to extend to their maximum length for tapping detection on higher parts of the wall, thus achieving adjustable length and smooth extension / retraction to prevent jamming.

Claims

1. A retractable hollow-sounding hammer for wall detection, characterized in that, Includes a handle (1): the inner cavity of the handle (1) is slidably connected to a first sliding tube (2), the inner cavity of the first sliding tube (2) is slidably connected to a second sliding tube (3), the front end of the second sliding tube (3) is fixedly connected to a ball head (4), the inner cavities of the handle (1), the first sliding tube (2) and the second sliding tube (3) are provided with long springs (5), the rear end of the handle (1) is threadedly connected to a threaded plug (6), the front end and the rear end of the long spring (5) are tightly fitted to the second sliding tube (3) and the threaded plug (6) respectively, the front side of the top of the handle (1) is fixedly connected to a fixing tube (7), the inner cavity of the fixing tube (7) is provided with a locking component (8), the rear side of the top of the second sliding tube (3) is welded with a linkage block (9), and the top of the first sliding tube (2) is provided with an arc-shaped sliding groove (10) that matches the linkage block (9).

2. The retractable hollow-sounding hammer for wall detection according to claim 1, characterized in that, The locking assembly (8) includes a limiting pin (81) that is slidably connected to the inner cavity of the fixed tube (7). The rear side of the top of the first sliding tube (2) is provided with a first insertion hole (82) that is adapted to the limiting pin (81), and the front side of the top of the second sliding tube (3) is provided with a second insertion hole (83) that is adapted to the limiting pin (81).

3. The retractable hollow-sounding hammer for wall detection according to claim 2, characterized in that, A short spring (84) is fitted on the surface of the limiting pin (81), and the top and bottom ends of the short spring (84) are welded to the fixing tube (7) and the limiting pin (81) respectively.

4. The retractable hollow-sounding hammer for wall detection according to claim 3, characterized in that, Both sides of the limiting pin (81) are welded with anti-detachment pins, and both sides of the fixing tube (7) are provided with limiting grooves that are adapted to the anti-detachment pins. The top of the limiting pin (81) is rotatably connected with a pull ring.

5. The retractable hollow-sounding hammer for wall detection according to claim 4, characterized in that, The first sliding tube (2) has guide rails (11) welded on both sides, and the hand lever (1) has guide grooves (12) adapted to the guide rails (11) on both sides of its inner cavity.

6. The retractable hollow-sounding hammer for wall detection according to claim 5, characterized in that, The surface of the handle (1) is covered with a shock-absorbing sleeve (13), which is a foam sleeve.

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