Safe electric hammer electricity measuring structure

Abstract

The utility model relates to a safety electric hammer electricity measuring structure, and relates to the technical field of electricity measuring safety, the safety electric hammer electricity measuring structure comprises an ionization tube, a part of the ionization tube is exposed outside an electric hammer, and the ionization tube is filled with gas capable of emitting light through ionization; the resistor is arranged in the electric hammer and is coupled with the ionization tube; the conducting strip is clamped on the electric hammer shell in a sliding manner and is used for being in contact with a human body to conduct a circuit; the contact assembly is electrically connected with the resistor, and the conducting strip movably abuts against the contact assembly; the electric hammer further comprises an impact head which is used for operation and is made of conductive materials, and the impact head is connected with an electricity measuring conduction mechanism coupled with the ionization tube. According to the invention, real-time current detection is carried out on the impact head of the electric hammer in the working process of the electric hammer and in a normal state, so that the risk of accidental electric shock of workers during operation is reduced.

Description

Technical Field

[0001] This application relates to the field of electrical safety technology, and in particular to a safety electric hammer electrical measurement structure. Background Technology

[0002] A hammer drill is a power tool that combines rotary drilling with a pneumatic hammering mechanism. It uses a motor to drive a piston that compresses gas, generating a high-frequency impact force to drive the drill bit. Its name comes from its working principle, which resembles the action of a manual hammer. It is primarily used for drilling into hard materials such as concrete, brick, and floor slabs. The hammer drill uses a motor to drive a piston that reciprocates within a cylinder. The compressed air creates periodic pressure changes, pushing the hammer to strike the top of the drill bit at high frequency, achieving both rotational and vertical impact.

[0003] When using a hammer drill, it's common to encounter situations where the interior of walls is riddled with cables that are difficult to detect. In such cases, if the hammer drill comes into contact with a live cable, and the operator accidentally touches a conductive part of the drill, there is a risk of electric shock. Therefore, hammer drills need a structure that can detect current to help operators determine whether there is current present, thus improving operational safety. Utility Model Content

[0004] In order to improve the structure of existing electric hammers so that they can detect current during operation and avoid the risk of electric shock, this application provides a safe electric hammer current measurement structure.

[0005] The safety electric hammer electrical measurement structure provided in this application adopts the following technical solution:

[0006] A safety electric hammer electrical measurement structure, including

[0007] The ionization tube is partially exposed outside the electric hammer, and the ionization tube is filled with a gas that can emit light through ionization.

[0008] The resistor is installed inside the electric hammer and is coupled to the ionization tube.

[0009] A conductive sheet is slidably mounted on the outer shell of the electric hammer and is used to contact the human body for circuit conduction.

[0010] A contact assembly, which is electrically connected to a resistor, and a conductive sheet that movably abuts against the contact assembly;

[0011] The electric hammer also includes an impact head made of a conductive material for operation, the impact head being connected to an electrical conduction mechanism coupled to an ionization tube.

[0012] Optionally, the electrical conduction mechanism includes a fixed ring installed inside the electric hammer, a rotating ring rotatably connected to the outside of the fixed ring, and a plurality of conductive tabs circumferentially connected to the inner ring of the rotating ring. The rotating ring is embedded with an electrical coil coupled to an ionization tube. One end of each of the plurality of conductive tabs in the same direction abuts against the electrical coil. The conductive tabs are flexible and are connected to the rotating ring by an insulating spring. The fixed ring has a through hole through which the guide tabs pass through at the end away from the rotating ring.

[0013] Optionally, the length of the conductive paddle is greater than the length of the through hole, and when the conductive paddle is facing the through hole, the middle part of the conductive paddle passes through the through hole to the inner side of the fixed ring. A convex ring is fixedly sleeved on the impact head, and when the middle part of the conductive paddle passes through the through hole, the convex ring and the conductive paddle abut against each other.

[0014] Optionally, the electric hammer is provided with a rotation limiting component that allows the moving ring to rotate a predetermined angle in a single operation. The component includes several mounting holes circumferentially opened on the outer shell of the electric hammer and several locking blocks that are slidably disposed in the mounting holes. A limiting spring is connected between the locking block and the bottom side of the mounting hole. A limiting ring groove is opened on the part of the moving ring that extends out of the outer shell of the electric hammer. Several limiting holes are opened circumferentially on the side wall of the limiting ring groove for the locking blocks to engage.

[0015] Optionally, the outer side of the moving ring is provided with anti-slip texture along the circumferential direction.

[0016] Optionally, the contact assembly includes a contact seat disposed inside the electric hammer, a conductive block disposed on the contact seat, and a contact plate integrally connected to the conductive sheet. The conductive block is electrically connected to a resistor, and one side of the contact plate is conductive. When the conductive sheet is pressed, the conductive block abuts against the conductive side of the contact plate. A reset spring for resetting the conductive sheet is provided on the electric hammer housing.

[0017] Optionally, the contact seat has a sliding groove, the first conductive block is disposed at one end of the sliding groove, the second conductive block is slidably disposed at the other end of the sliding groove, and the second conductive block is connected to the side wall of the sliding groove by a compression spring. The second conductive block is coupled to the electrical coil. When the conductive sheet is not under force, the second conductive block and the first conductive block abut against each other. The contact plate is always located between the first conductive block and the second conductive block along the extension direction of the sliding groove, and an insulating layer is laid on the side of the contact plate away from the first conductive block.

[0018] Optionally, the electric hammer includes a grip bar, on which the conductive sheet is disposed.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. This application can monitor whether there is current on the impact head during the operation of the electric hammer, so as to avoid accidental contact with the cable embedded in the wall during the operation of the electric hammer, which could lead to electric shock accidents for the operator and improve the safety of electric hammer operation;

[0021] 2. This application can detect the current of the impact head on the electric hammer when the electric hammer is not working, thereby preventing the operator from accidentally touching it when the electric hammer leaks electricity;

[0022] 3. This application enables the rapid replacement of some parts on the electric hammer, thereby extending the service life of the electric hammer and reducing the difficulty of repair when the electrical measuring circuit fails. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a safety electric hammer measuring structure according to this application.

[0024] Figure 2 yes Figure 1 A magnified view of point A in the middle.

[0025] Figure 3 This is an exploded view of the electrical conduction mechanism of a safety electric hammer electrical measuring structure according to this application.

[0026] Figure 4 This is a structural view of the internal rotating ring of a safety electric hammer measuring structure according to this application.

[0027] Figure 5 This is a partially exploded view of the contact assembly of a safety electric hammer measuring structure according to this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Conductive sheet; 2. Contact assembly; 21. Contact seat; 211. Slide groove; 22. Conductive block one; 221. Compression spring one; 23. Contact plate; 24. Insulating layer; 25. Conductive block two; 251. Compression spring two; 3. Impact head; 4. Holding rod; 5. Electrical conduction mechanism; 51. Fixed ring; 511. Through hole; 52. Moving ring; 521. Anti-slip texture; 53. Conductive paddle; 54. Electrical coil; 55. Insulating spring; 56. Protruding ring; 6. Rotation limit assembly; 61. Mounting hole; 62. Locking block; 63. Limiting spring; 64. Limiting ring groove; 641. Limiting hole. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses a safety electric hammer electrical measurement structure.

[0031] Reference Figure 1 A safety electric hammer electrical testing structure includes an ionization tube, a resistor, a conductive sheet 1, and a contact assembly 2. Wherein:

[0032] The ionization tube is embedded in the casing of the electric hammer, with a portion exposed on the outside. The inside of the ionization tube is filled with a gas that emits light after ionization, serving as a voltage indicator to help operators make voltage readings. When the ionization tube is energized, the gas inside will emit light.

[0033] The gas used to emit light includes, but is not limited to, neon, argon, etc. There are no strict restrictions on the gas in the ionization tube, as long as the glow discharge phenomenon can be satisfied.

[0034] The resistor is installed inside the electric hammer and is electrically connected to the ionization tube. The resistor has a high resistance value, which can greatly reduce the current in the measuring circuit, thus protecting the operator.

[0035] Conductive sheet 1 is slidably mounted on the outer shell of the electric hammer. It is used to contact the human body to conduct current to the ground, thereby connecting the circuit. It can also be used as a switch for the electric measuring circuit.

[0036] Preferably, the electric hammer includes a grip rod 4, and a conductive plate 1 is movably mounted on the grip rod 4 so that the operator can connect the measuring circuit when using the electric hammer, thereby improving the ease of operation of the electric hammer.

[0037] Furthermore, the width of the conductive sheet 1 is smaller than the length of a human finger, so that the conductive sheet 1 will not be subjected to excessive force when the operator presses it, thereby improving the service life of the parts.

[0038] Contact component 2 is located at the conductive plate 1 of the electric hammer. When the operator presses on the conductive plate 1, the conductive plate 1 abuts against the contact component 2, thus smoothly connecting the electrical measuring circuit. This structure also prevents the electrical measuring circuit from being in a continuously connected state, which would accelerate circuit aging and extend the circuit's lifespan, making the electric hammer more durable.

[0039] The electric hammer also includes an impact head 3 for performing the operation. The impact head 3 is made of a conductive material and is coupled to an ionization tube. When the impact head 3 comes into contact with a live cable, the measuring circuit is activated, causing the ionization tube to light up as a warning.

[0040] In this application, since both the ionization tube and the resistor are electronic components, and the function of the ionization tube is only for warning purposes, the positions of the ionization tube and the resistor on the electric hammer do not need to be restricted. To ensure that the scope of protection of this application is not narrowed, the ionization tube and the resistor are no longer identified in the accompanying drawings.

[0041] Reference Figure 2 and Figure 3Furthermore, an electrical conduction mechanism 5 is connected between the impact head 3 and the ionization tube, so that the operator can manually activate the electrical circuit to achieve the purpose of electrical measurement during the operation of the electric hammer or under normal conditions.

[0042] The electrical conductivity measuring mechanism 5 specifically includes a fixed ring 51 installed inside the electric hammer, a rotating ring 52 rotatably connected to the outside of the fixed ring 51, and several conductive tabs 53 circumferentially connected to the inner surface of the rotating ring 52. Both the fixed ring 51 and the rotating ring 52 are coaxial with the impact head 3 of the electric hammer and lie on the same radial plane. An electrical ring 54 is embedded inside the rotating ring 52, which is electrically connected to the several conductive tabs 53. The same end of each conductive tab 53 in the same direction conductively abuts against the electrical ring 54. The electrical ring 54 is electrically connected to the ionization tube to achieve the connection of the electrical measuring circuit.

[0043] Meanwhile, the conductive lever 53 is made of a flexible material, with a gap between its end away from the electrical coil 54 and the electrical coil 54, and an insulating spring 55 connecting it to the inner ring surface of the moving ring 52 for resetting the conductive lever 53. A through hole 511 is provided through the fixed ring 51, which can accommodate the end of the conductive lever 53 away from the moving ring 52 extending into the inner side of the fixed ring 51.

[0044] When the rotating ring 52 is rotated to the predetermined position, one end of the conductive lever 53 extends out of the through hole 511 and abuts against the impact head 3 located in the middle. If the impact head 3 is charged at this time, the ionization tube will emit light through the conduction of the conductive lever 53 and the electric coil 54.

[0045] Reference Figure 3 and Figure 4 Furthermore, the length of the conductive lever 53 is greater than the length of the through hole 511, and when the conductive lever 53 is directly opposite the through hole 511, a portion of the middle part of the conductive lever 53 extends into the inner side of the fixed ring 51 under the action of the insulating spring 55. A conductive protruding ring 56 is fixedly sleeved on the impact head 3, and the protruding ring 56 abuts against the conductive lever 53. The electric hammer is equipped with a rotation limiting component 6 so that the moving ring 52 can be rotated, and each rotation of the moving ring 52 will cause the conductive lever 53 to be in one of two states: "the middle part protrudes through the through hole 511" or "the end protrudes through the through hole 511".

[0046] This structure allows the rotation of the impact head 3 to directly connect the electrical measuring circuit during the operation of the electric hammer, without requiring the operator to manually rotate the moving ring 52. This structure not only facilitates the normal operation of the electrical measuring circuit but also simplifies the electrical measuring operation process, avoiding the complex steps of repeatedly rotating the moving ring 52 to determine whether the electrical measuring circuit is connected, thus reducing the risk of misoperation during electric hammer operation.

[0047] Reference Figure 3and Figure 4 Specifically, the rotation limiting assembly 6 includes several mounting holes 61 spaced circumferentially on the hammer housing and several locking blocks 62 slidably disposed within the mounting holes 61. A limiting spring 63 connects the locking block 62 to the bottom side of the mounting hole 61, allowing the locking block 62 to retract completely into the mounting hole 61, and the end of the locking block 62 away from the limiting spring 63 has a hemispherical structure. The outer ring of the moving ring 52 extends out of the hammer housing and has a limiting ring groove 64. The limiting ring groove 64 has several limiting holes 641 spaced circumferentially, each corresponding to a locking block 62, and the locking blocks 62 are movably engaged within the limiting holes 641.

[0048] It should be noted that in order for the above-mentioned adjustment structure for the position of the conductive lever 53 to be realized, the number of locking blocks 62 is at least twice the number of conductive levers 53.

[0049] Reference Figure 3 Furthermore, the rotating ring 52 has anti-slip textures 521 densely distributed around its outer side, which protrudes from the outer shell of the electric hammer, so that the operator can rotate the rotating ring 52 more easily and make it easier to adjust.

[0050] Reference Figure 1 and Figure 5 The contact assembly 2 includes a contact seat 21 disposed inside the electric hammer, a conductive block 22 disposed on the contact seat 21, and a contact plate 23 integrally connected to the conductive plate. The conductive block 22 is electrically connected to a resistor and is disposed at one end of the contact seat 21 along its length. The contact plate 23 and the contact seat 21 are located on the same height plane and are perpendicular to each other, with one side of the contact plate 23 being conductive. When the conductive piece 1 is touched and pressed by a person, the conductive side of the contact plate 23 will contact the conductive block 22, and the measuring circuit can be connected through the conduction of the person's hand. A return spring is also embedded in the shell of the electric hammer and sleeved on the outside of the contact plate 23 for automatic reset of the conductive piece 1.

[0051] Reference Figure 5 Preferably, the contact seat 21 is further provided with a groove 211 along its length. The conductive block 22 is disposed at one end of the groove 211 and is connected to the side wall of the groove 211 by a compression spring 221. The other end of the groove 211 is also provided with a conductive block 25 electrically connected to the electrical coil 54 via a compression spring 251. When the conductive sheet 1 is not under force, the conductive block 25 and the conductive block 22 are always in contact with each other under the action of the compression spring 251 and the compression spring 221. At this time, a closed circuit will be formed inside the electric hammer. When the electric hammer leaks current and the impact head 3 receives a pulse current, the ionization tube can also flash, which serves as a warning of leakage fault.

[0052] An insulating layer 24 is laid on the side of the contact plate 23 away from the conductive block 22. When the conductive sheet 1 is pressed and the contact plate 23 moves down, the conductive block 22 and the conductive block 25 will separate, forming a grounded measuring circuit to avoid leakage.

[0053] The implementation principle of a safety electric hammer electrical measuring structure in this application embodiment is as follows:

[0054] By designing a fixed ring 51, a moving ring 52, a convex ring 56 on the impact head 3, and a conductive tab 53 on the moving ring 52, all located inside the electric hammer and coaxial with the impact head 3, the electric hammer can perform electrical measurement operations in both static and working states, and the result can be determined by whether the ionization tube on the outer shell of the electric hammer emits light.

[0055] When it is necessary to measure whether an external circuit or an object in contact with the electric hammer is electrified, simply press the conductive piece 1 to connect the contact component 2 to the measuring circuit. When measuring whether there is leakage inside the electric hammer, releasing the conductive piece 1 will connect the internal measuring circuit, providing double safety protection for the use of the electric hammer, expanding the application range of the electric hammer, and making the operation of the electric hammer safer and more convenient.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safety electric hammer electrical measurement structure, characterized in that: include The ionization tube is partially exposed outside the electric hammer, and the ionization tube is filled with a gas that can emit light through ionization. The resistor is installed inside the electric hammer and is coupled to the ionization tube. Conductive sheet (1), the conductive sheet (1) is slidably mounted on the outer shell of the electric hammer for contact with the human body and conduction of circuits; Contact component (2), the contact component (2) is electrically connected to a resistor, and the conductive sheet (1) is in movable contact with the contact component (2); The electric hammer also includes an impact head (3) made of a conductive material for operation, and the impact head (3) is connected to an electrical conduction mechanism (5) coupled to an ionization tube.

2. The electric hammer measuring structure according to claim 1, characterized in that: The electrical conduction mechanism (5) includes a fixed ring (51) installed inside the electric hammer, a rotating ring (52) rotatably connected to the outside of the fixed ring (51), and a plurality of conductive paddles (53) circumferentially connected to the inner ring of the rotating ring (52). The rotating ring (52) is embedded with an electrical coil (54) coupled to the ionization tube. One end of each of the conductive paddles (53) in the same direction abuts against the electrical coil (54). The conductive paddles (53) have bending elasticity and are connected to the rotating ring (52) by an insulating spring (55). The fixed ring (51) has a through hole (511) through which the conductive paddles (53) pass away from the rotating ring (52).

3. The electric hammer measuring structure according to claim 2, characterized in that: The length of the conductive paddle (53) is greater than the length of the through hole (511), and when the conductive paddle (53) is facing the through hole (511), the middle part of the conductive paddle (53) passes through the through hole (511) to the inner side of the fixed ring (51). A convex ring (56) is fixedly sleeved on the impact head (3). When the middle part of the conductive paddle (53) passes through the through hole (511), the convex ring (56) abuts against the conductive paddle (53).

4. The electric hammer measuring structure according to claim 2, characterized in that: The electric hammer is provided with a rotation limiting component (6) that allows the moving ring (52) to rotate a predetermined angle at one time. It includes several mounting holes (61) opened circumferentially on the outer shell of the electric hammer and several locking blocks (62) that are slidably disposed in the mounting holes (61). A limiting spring (63) is connected between the locking block (62) and the bottom side of the mounting hole (61). A limiting ring groove (64) is opened on the part of the moving ring (52) that extends out of the outer shell of the electric hammer. Several limiting holes (641) are opened circumferentially on the side wall of the limiting ring groove (64) for the locking block (62) to engage.

5. The electric hammer measuring structure according to claim 4, characterized in that: The outer side of the moving ring (52) is provided with anti-slip texture (521) along the circumferential direction.

6. The electric hammer measuring structure according to claim 1, characterized in that: The contact assembly (2) includes a contact seat (21) disposed inside the electric hammer, a conductive block (22) disposed on the contact seat (21), and a contact plate (23) integrally connected to the conductive sheet (1). The conductive block (22) is electrically connected to a resistor, and one side of the contact plate (23) is conductive. When the conductive sheet (1) is pressed, the conductive block (22) abuts against the conductive side of the contact plate (23). A reset spring for resetting the conductive sheet (1) is provided on the electric hammer housing.

7. The electric hammer measuring structure according to claim 6, characterized in that: The contact seat (21) has a sliding groove (211). The first conductive block (22) is disposed at one end of the sliding groove (211). The other end of the sliding groove (211) is slidably disposed with a second conductive block (25). A second compression spring (251) is connected between the second conductive block (25) and the side wall of the sliding groove (211). The second conductive block (25) is coupled to the electrical conduction mechanism (5). When the conductive sheet (1) is not under force, the second conductive block (25) and the first conductive block (22) abut against each other. The contact plate (23) is always located between the first conductive block (22) and the second conductive block (25) along the extension direction of the sliding groove (211). An insulating layer (24) is laid on the side of the contact plate (23) away from the first conductive block (22).

8. The electric hammer measuring structure according to claim 7, characterized in that: The electric hammer includes a grip rod (4), and the conductive sheet (1) is disposed on the grip rod (4).

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