Head lamp

Abstract

The utility model relates to a head lamp which comprises a head sleeve, a lamp body arranged on the head sleeve and a battery for supplying power to a lighting assembly in the lamp body, and is characterized by further comprising a battery box assembly capable of bearing the battery, the lamp body is provided with a containing cavity, a positive electrode conductor and a negative electrode conductor, and the positive electrode conductor and the negative electrode conductor are located in the containing cavity and electrically connected with the lighting assembly. A battery box assembly with a battery can be inserted into the containing cavity and is detachably connected with the lamp body, a positive electrode output end connected with the positive electrode of the battery and a negative electrode output end connected with the negative electrode of the battery are arranged on the battery box assembly, and after the battery box assembly is detachably connected with the lamp body, the positive electrode output end makes contact with the positive electrode conductor, and the negative electrode output end makes contact with the negative electrode conductor. And the negative output end is in contact with the negative conductor. By the adoption of the structure, when the battery needs to be replaced, the head sleeve does not need to be taken off, rapid blind insertion of the battery and rapid installation after 360-degree rotation can be achieved, and therefore the battery can be replaced more conveniently, and the use requirement can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to the technical field of a work lamp mainly worn on the head. Background Art

[0002] A headlamp is a work light primarily worn on the operator's head, freeing the operator's hands during work. It can also be flexibly moved with the operator to meet lighting needs, and is therefore widely used in environments such as tunnels and mines. Currently, this headlamp includes a headgear, a lamp body mounted on the headgear, and a battery that powers the lighting components within the lamp body. There are various ways to place the battery. Some headlamps place the battery in a battery box that is mounted on the headgear independently of the lamp body, and the battery is electrically connected to the lighting components within the lamp body via wires extending from the battery box. Other headlamps have a battery compartment within the lamp body, with the battery placed directly within the compartment for power. While the above structure allows for normal use of the headlamp, when the battery is exhausted and needs to be replaced, the headgear often needs to be removed for operation, and quick blind insertion and disassembly cannot be achieved, so further improvements are needed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a headlamp which can be quickly disassembled and assembled and the battery replaced without taking off the headgear in view of the current status of the existing technology.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a headlamp, comprising a headgear, a lamp body mounted on the headgear, and a battery for powering a lighting component in the lamp body, characterized in that it also comprises a battery box assembly capable of carrying the battery, the lamp body being provided with a receiving cavity and a positive conductor and a negative conductor located in the receiving cavity and electrically connected to the lighting component, the battery box assembly with the battery being capable of being inserted into the receiving cavity and detachably connected to the lamp body, and the battery box assembly being provided with a positive output terminal connected to the positive pole of the battery and a negative output terminal connected to the negative pole of the battery, wherein after the battery box assembly is detachably connected to the lamp body, the positive output terminal contacts the positive conductor, and the negative output terminal contacts the negative conductor.

[0005] Preferably, the positive conductor and the negative conductor are both located at the bottom of the accommodating cavity, and the positive output terminal and the negative output terminal are located at the insertion end of the battery box assembly. This facilitates assembly and makes it easy for the positive output terminal and the negative output terminal to achieve corresponding contact with the positive conductor and the negative conductor respectively.

[0006] It is further preferred that the negative conductor is designed as a coil spring, and the positive conductor is designed as a conical spring, and is located at the center of the negative conductor. Such an arrangement can ensure that the positive output terminal and the negative output terminal are in reliable contact with the positive conductor and the negative conductor respectively when the battery box assembly is rotated and inserted into place.

[0007] In each of the above solutions, the battery case assembly has been further improved to include a battery rack capable of accommodating batteries, an insulating end cap secured to the front end of the battery rack, and a connecting cap secured to the rear end of the battery rack. The negative and positive output terminals are located on the front and rear end surfaces of the insulating end cap, respectively. A through hole is defined in the center of the insulating end cap, through which the positive conductor can pass to connect to the positive output terminal. The connecting cap is provided with internal threads that connect to the external threads of the accommodating cavity. This battery case assembly is easy to process and assemble, and allows for a more compact structure with a reasonable arrangement of the negative and positive output terminals.

[0008] Preferably, a first sealing ring is provided between the connecting cap and the mouth of the accommodating cavity to ensure the sealing of the accommodating cavity and extend the service life of the built-in battery.

[0009] Taking into account the insulation performance of the rear end of the battery rack, it can also include an insulating pressure plate fixed to the rear end of the battery rack, with a mounting hole extending through its thickness, and a mounting column extending from the rear end of the battery rack that can pass through the mounting hole, and the connecting cap is fixed on the mounting column.

[0010] Similarly, in order to prevent water from entering the connection cap and the mounting column, the mounting column passing through the mounting hole is provided with a second sealing ring that abuts against the connection cap, and the insulating pressing plate is provided with a recess for the second sealing ring to sit.

[0011] A further improvement is that the battery rack includes a base plate at the rear end of the battery rack and multiple partition walls extending from one end of the base plate toward the front end of the battery rack. The multiple partition walls are radially arranged around the center of the base plate, and the adjacent side edges of the multiple partition walls are connected together to form a battery cavity capable of accommodating a single battery cell between adjacent partition walls. This structure can accommodate more batteries and is easy to assemble.

[0012] In order to ensure that each battery is securely placed in its own battery cavity, a shielding sheet is extended from the outer edge of each partition wall to shield part of the batteries in each battery cavity.

[0013] Preferably, a limiting groove is designed on the rear end surface of the insulating end cover, and a connecting piece for connecting the battery series in the battery cavity is placed in the limiting groove, so that the connecting piece is reliably positioned and the electrical connection performance is good.

[0014] Compared to the prior art, the battery compartment assembly added to the present invention can be integrated with the battery. Therefore, when the battery needs to be replaced, the battery compartment assembly can be used to quickly insert the battery into the accommodating cavity. The removable connection between the battery compartment assembly and the lamp body allows for quick positioning of the battery. This structure allows for quick blind insertion of the battery and quick installation after 360° rotation while the headlamp is worn on the head, without removing the headgear. Therefore, the present invention makes battery replacement more convenient and better meets user requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a headlamp according to an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure after the battery box assembly and the battery are separated from the receiving cavity of the lamp body;

[0017] Figure 3 for Figure 2 A partial exploded schematic diagram of the battery box assembly and battery;

[0018] Figure 4 for Figure 3 A further decomposed three-dimensional schematic diagram;

[0019] Figure 5 for Figure 4 A three-dimensional schematic diagram of another direction;

[0020] Figure 6 for Figure 4 A further decomposed three-dimensional schematic diagram;

[0021] Figure 7 for Figure 6 A three-dimensional schematic diagram of another direction;

[0022] Figure 8 for Figure 1 Schematic diagram of a three-dimensional cross-section. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for explanation and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0025] like Figures 1 to 8 As shown, the headlamp comprises a lamp body 1 with a lighting assembly (not shown), a wearable headgear (not shown), a battery 2, and a battery compartment assembly 3 capable of holding the battery 2. The lamp body is secured to the headgear via a mounting base 4. The mounting base 4 comprises a mounting plate 41 and two axle seats 42 detachably connected to the mounting plate (clipped in the figure, but alternatively, other conventional methods, such as screws, are possible). Each axle seat 42 defines a corresponding axle hole 421. The mounting plate 41 is an arcuate sheet that can be attached to the user's head. Both ends of the mounting plate 41 have through-holes 411 for the headband to pass through. The lamp body 1 is rotatably constrained within the axle holes of the two axle seats 42. When desired, the lamp body 1 can be rotated relative to the mounting base 4 about the centerline of the axle holes 421 to change the direction of light emitted by the lighting assembly on the lamp body 1. When the lamp body 1 is rotated into position, in order to position the lamp body 1 relative to the mounting base 4, two axially spaced toothed belts 11 extending circumferentially are provided on the lamp body 1, and positioning teeth 412 engaged with the toothed belts 11 are provided on the mounting plate 41 (see FIG. Figure 8), by meshing each positioning tooth 412 with the corresponding toothed belt 11, the lamp body 1 is stably positioned at the desired position after rotation. In order to ensure that the lamp body 1 can rotate flexibly and is positioned reliably, an elastic piece 413 that is always deflected toward the lamp body is integrally stamped out at the position corresponding to the positioning tooth 412 on the mounting plate 41. The elastic piece 413 can move slightly away from the lamp body 1 under the action of an external force, and the positioning teeth 412 are arranged on the corresponding elastic piece 413. In this way, by utilizing the amount of movement of the elastic piece 413, the elastic piece 413 can be squeezed when the lamp body 1 rotates, so that the positioning teeth 412 on the elastic piece 413 can slide from one tooth of the toothed belt 11 to the next tooth. Then, under the action of the restoring force of the elastic piece 413, the positioning teeth 412 are reliably engaged with the toothed belt 11, ensuring the reliable positioning of the lamp body 1. Of course, the headgear can also adopt other structures in the prior art. The above-mentioned lighting assembly adopts the prior art and will not be described in detail here.

[0026] The lamp body 1 is provided with a housing cavity 12. The opening of the housing cavity 12 is arranged along the centerline of the axial hole 421 in the figure. A positive conductor 5a and a negative conductor 5b electrically connected to the lighting assembly are arranged insulated from each other within the housing cavity 12. A battery box assembly 3 containing a battery 2 can be inserted into the housing cavity 12 and removably connected to the lamp body 1. A positive output terminal 6a connected to the positive pole of the battery 2 and a negative output terminal 6b connected to the negative pole of the battery 2 are provided on the battery box assembly 3. When the battery box assembly 3 is removably connected to the lamp body 1, the positive output terminal 6a contacts the positive conductor 5a, and the negative output terminal 6b contacts the negative conductor 5b. In this way, the battery 2 installed in the battery box assembly 3 supplies power to the lighting assembly within the lamp body 1.

[0027] The positive and negative conductors 5a and 5b can be arranged in the accommodating cavity 12 as needed, for example, at the side walls of the accommodating cavity 12. Once the battery box assembly 3 is inserted and connected in place, the positive and negative conductors 5a and 5b are connected to the positive and negative output terminals 6a and 6b, respectively. However, to facilitate processing and assembly, in this embodiment, the positive and negative conductors 5a and 5b are both located at the bottom of the accommodating cavity 12, and correspondingly, the positive and negative output terminals 6a and 6b are located at the insertion end of the battery box assembly 3. In order to make the electrical connection more reliable, the negative conductor 5b is designed as a coil spring, while the positive conductor 5a is designed as a conical spring, and the positive conductor 5a is located at the center of the negative conductor 5b.

[0028] At the same time, the battery box assembly 3 is designed to have the following structure, which includes a battery rack 31 that can accommodate the battery 2, an insulating end cap 32 fixed to the front end of the battery rack 31, and a connecting cap 33 fixed to the rear end of the battery rack. The negative output terminal 6b and the positive output terminal 6a are respectively located on the front and rear end surfaces of the insulating end cap 32 (the front end surface refers to the direction toward the insertion end), and a through hole 321 is opened in the center of the insulating end cap 32. When the battery box assembly 3 is inserted, the positive conductor 5a can pass through the through hole 321 and connect to the positive output terminal 6a. The connecting cap 33 is provided with an internal thread connected to the external thread of the mouth of the accommodating chamber 12 (of course, a rotary clamping form can also be used for disassembly and connection), and in order to ensure the sealing after connection, a first sealing ring 7a is provided between the connecting cap 33 and the mouth of the accommodating chamber 12 to prevent moisture from entering the accommodating chamber during use, thereby affecting the service life of the battery.

[0029] Typically, to ensure lighting brightness, multiple batteries 2 are used. Three batteries are shown in the figure. The leading and trailing ends of the three batteries, connected in series, are electrically connected to the corresponding positive output terminal 6a and negative output terminal 6b, respectively. To facilitate installation of these multiple batteries, the battery rack 31 preferably employs the following structure: it comprises a base plate 311 at the trailing end of the rack and a plurality of partition walls 312 extending from one end of the base plate toward the leading end of the rack. Since there are three batteries, the plurality of partition walls 312 shown in the figure are three. These three partition walls 312 are radially positioned about the center of the base plate 311, and their adjacent side edges are connected to form a single unit. The cross-section of this unit is generally Y-shaped, forming a battery cavity between adjacent partition walls 312, each capable of accommodating a single battery. This allows each battery to be radially inserted into its corresponding battery cavity. After assembly, to ensure each battery is securely contained within its respective cavity, shielding plates 313 extend from the outer edges of each partition wall to partially conceal the battery within each cavity.

[0030] The three batteries 2 can be connected in series using conventional methods, such as wires. However, a more convenient assembly method is to connect the positive and negative electrodes of two of the batteries at the insertion end of the battery holder 31 using a connecting piece 8. Correspondingly, a limiting groove 322 is designed on the rear end face of the insulating end cap 32, and the connecting piece 8 is positioned within this limiting groove 322 to ensure the stability of the connecting piece 8 after installation. The positive output terminal 6a is also designed as a sheet, which is inserted into the positioning groove 323 on the rear end face of the insulating end cap 32. One end of the sheet is exposed in the through hole 321 of the insulating end cap 32, and the other end of the sheet contacts the positive electrode of the third battery at the insertion end of the battery holder 31. The insulating end cap 32 is then fixed to the corresponding screw hole on the end face of the partition wall 312 by two bolts. At the tail end of the battery rack 31, the positive and negative poles of two of the batteries are connected respectively through the first pagoda-shaped spring 9a, and the negative pole of the third battery is connected to one end of the long conductive sheet 10 through the second pagoda-shaped spring 9b. The long conductive sheet 10 is positioned on the outer wall of one of the partition walls 312. The long conductive sheet 10 is connected to the negative output terminal 6b positioned on the front end surface of the insulating end cover 32. The negative output terminal 6b is designed to be annular so that it can be reliably electrically connected to the negative conductor 5b at the bottom of the accommodating cavity when the battery box assembly 3 is rotated and connected.

[0031] In order to ensure the reliable positioning and mutual insulation of the first pagoda-shaped spring 9a and the second pagoda-shaped spring 9b at the tail end of the battery rack 31, an insulating pressure plate 34 is fixed to the tail end of the battery rack 31, that is, the rear end face of the base plate 311, by two bolts. A mounting hole 341 is provided on the insulating pressure plate 34 that passes through its thickness. A mounting column 314 that can pass through the mounting hole is extended from the tail end of the battery rack 31, that is, the rear end face of the base plate 311, and the connecting cap 33 is fixed on the mounting column 314. Specifically, a screw hole is provided on the end face of the specific mounting column 314, and a center hole 331 is provided on the connecting cap 33. The bolt 20 passes through the center hole 331 and is threadedly connected to the screw hole of the mounting column 314. When necessary, the bolt 20 can be loosened to allow the connecting cap 33 to rotate relative to the battery rack 31. In this way, when the battery box assembly 3 is inserted into the accommodating cavity 12, the threaded connection with the lamp body 1 can be achieved by rotating the connecting cap 33, making the connection easier. Of course, while the bolts 20 are tightened, the connecting cap 33 can also be rotated, driving the other components of the battery compartment assembly 3 and the battery to rotate together, ultimately securing the battery compartment 3 within the accommodating cavity 12 of the lamp body 1. Also to prevent water from entering this area, a second sealing ring 7b is sleeved on the mounting post 314 passing through the mounting hole 331, which abuts the connecting cap 33. A recess 342 is formed on the insulating pressure plate 34 for the second sealing ring 7b to seat.

[0032] When replacing batteries, the headlamp with the above structure can be blindly inserted into the accommodating cavity using the battery box assembly. The threaded connection between the battery box assembly and the lamp body allows for quick positioning of the batteries. Furthermore, the overall sealing performance is excellent, and assembly is easy.

Claims

1. A headlamp comprising a head cover, a lamp body (1) mounted on the head cover, and a battery (2) for powering a lighting assembly in the lamp body (1), characterized in that: The invention also includes a battery box assembly (3) capable of carrying the battery (2); the lamp body (1) is provided with a receiving cavity (12) and a positive conductor (5a) and a negative conductor (5b) located in the receiving cavity (12) and electrically connected to the lighting assembly; the battery box assembly (3) with the battery (2) can be inserted into the receiving cavity (12) and detachably connected to the lamp body (1); and a positive output terminal (6a) connected to the positive pole of the battery (2) and a negative output terminal (6b) connected to the negative pole of the battery (2) are provided on the battery box assembly (3); after the battery box assembly (3) is detachably connected to the lamp body (1), the positive output terminal (6a) contacts the positive conductor (5a), and the negative output terminal (6b) contacts the negative conductor (5b).

2. The headlamp according to claim 1, wherein: The positive conductor (5a) and the negative conductor (5b) are both located at the bottom of the accommodating cavity (12), and the positive output terminal (6a) and the negative output terminal (6b) are located at the insertion end of the battery box assembly (3).

3. The headlamp according to claim 2, wherein: The negative electrode conductor (5b) is designed as a coil spring, and the positive electrode conductor (5a) is designed as a conical spring and is located at the center of the negative electrode conductor (5b).

4. The headlamp according to claim 1, 2 or 3, characterized in that: The battery box assembly (3) comprises a battery rack (31) capable of accommodating a battery (2), an insulating end cover (32) fixed to the front end of the battery rack (31), and a connecting cap (33) fixed to the rear end of the battery rack (31); the negative output terminal (6b) and the positive output terminal (6a) are respectively located on the front and rear end surfaces of the insulating end cover (32); a through hole (321) is provided in the center of the insulating end cover (32); the positive conductor (5a) can pass through the through hole (321) and be connected to the positive output terminal (6a); and the connecting cap (33) is provided with an internal thread connected to the external thread of the mouth of the accommodating cavity (12).

5. The headlamp according to claim 4, characterized in that: A first sealing ring (7a) is provided between the connecting cap (33) and the mouth of the accommodating cavity (12).

6. The headlamp according to claim 4, characterized in that: The invention also includes an insulating pressing plate (34) fixed to the rear end of the battery rack (31), a mounting hole (341) penetrating the thickness of the insulating pressing plate (34), a mounting post (314) extending from the rear end of the battery rack (31) and capable of passing through the mounting hole, and the connecting cap (33) is fixed on the mounting post (314).

7. The headlamp according to claim 6, characterized in that: The mounting post (314) passing through the mounting hole (341) is sleeved with a second sealing ring (7b) that abuts against the connection cap, and the insulating pressing plate (34) is provided with a recessed groove (342) for the second sealing ring (7b) to sit on.

8. The headlamp according to claim 4, characterized in that: The battery rack (31) comprises a base plate (311) at the rear end of the battery rack (31) and a plurality of partition walls (312) extending from one end of the base plate toward the front end of the battery rack (31). The plurality of partition walls (312) are radially arranged around the center of the base plate, and adjacent side edges of the plurality of partition walls (312) are connected together to form a battery cavity capable of accommodating one battery (2) between adjacent partition walls (312).

9. The headlamp according to claim 8, characterized in that: A shielding sheet (313) capable of shielding part of the batteries in each battery cavity extends from the outer edge of each partition wall (312).

10. The headlamp according to claim 8, characterized in that: A limiting groove (322) is designed on the rear end surface of the insulating end cover (32), and a connecting piece (8) for connecting the batteries (2) in the battery cavity in series is placed in the limiting groove.

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