CN209876677U

CN209876677U - Lamp fixing device

Info

Publication number: CN209876677U
Application number: CN201920664819.6U
Authority: CN
Inventors: 陈辉; 八田和洋; 戴忻; 王鑫
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2019-12-31
Anticipated expiration: 2029-05-10

Abstract

The utility model relates to a domestic appliance field relates to a lamps and lanterns fixing device. The lamp fixing device comprises a fixing seat and a connecting seat; the fixing seat is provided with a first electrical connecting part, the connecting seat is provided with a second electrical connecting part, and the second electrical connecting part is inserted into the first electrical connecting part to realize electrical connection. The first electrical connection part comprises a third accommodating groove, the bottom of which is provided with a central electrode; the second electrical connection portion has a third conductive terminal. The third conductive terminal is provided with a bulge with a cross section shape arranged along the radial direction, and the central electrode is provided with a groove body with a shape matched with the bulge so as to clamp the third conductive terminal through the matching between the groove body and the bulge. The utility model provides a lamp fixing device limits the motion of third conductive terminal through the cell body on the protruding centre gripping center electrode on the third conductive terminal, improves the electric connection strength between connecting seat and the fixing base.

Description

Lamp fixing device

Technical Field

The utility model relates to a domestic appliance field, in particular to lamps and lanterns fixing device.

Background

Ceiling lamp need pass through lamps and lanterns fixing device and install on the ceiling, patent publication is CN104456446A, the name is a lamps and lanterns fixing base and lamps and lanterns connecting seat and a lamps and lanterns fixing device's chinese patent, a lamps and lanterns fixing device is disclosed, including fixing base and connecting seat, the fixing base, the connecting seat is provided with first electrical connection portion respectively in central point punishment, second electrical connection portion, lamps and lanterns fixing device still has elastic element, elastic element configures to and applys axial force between the connecting seat that uses at the fixing base and with the fixing base cooperation, produce relative displacement between connecting seat and the fixing base in order to avoid after the equipment.

However, the lamp fixing device fixing seat and the connecting seat are prone to poor electric contact.

SUMMERY OF THE UTILITY MODEL

Through intensive research on the conventional lamp fixing device, the inventor finds that the reason for the poor contact phenomenon is as follows: the connecting seat is stressed downwards under the action of gravity of the lamp connected with the connecting seat, and the connecting seat is connected with the fixing seat through the edge to be fixed, so that the deformation of the edge of the connecting seat is small, and the deformation is mainly concentrated at the center of the connecting seat. The center of the connecting seat is deformed under the action of downward stress, so that the center of the connecting seat and the center of the fixing seat are displaced, and further the conductive terminal and the electrode which are positioned at the center are separated, and the electrical connection of the lamp is unstable.

The utility model provides a lamp fixing device, which comprises a fixing seat and a connecting seat; the fixing seat comprises a first main body part and at least two convex blocks arranged along the circumferential direction of the first main body part; the connecting seat is provided with a second main body part, the second main body part is provided with an accommodating cavity for accommodating the first main body part, and the inner wall of the accommodating cavity is provided with at least two mounting grooves along the circumferential direction; the lug of the fixing seat enters from the opening end of the mounting groove and rotates to the bottom of the mounting groove around the central shaft of the inner wall of the accommodating cavity along the circumferential direction of the inner wall of the accommodating cavity so as to realize mechanical connection between the fixing seat and the connecting seat; a first electrical connection part is arranged in the center of one surface of the first main body part, which is used for entering the accommodating cavity and is butted with the connecting seat, and an electrode is arranged at the bottom of the first electrical connection part; the center of the bottom of the accommodating cavity is provided with a conductive terminal; the conductive terminal is provided with a third conductive terminal which extends along the central axis direction of the accommodating cavity, and the third conductive terminal is provided with a bulge which is arranged along the radial direction and has a circular cross section; the third accommodating groove is provided with a central electrode which is arranged corresponding to the third conductive terminal, and the central electrode is provided with a groove body with the shape matched with the bulge so as to clamp the third conductive terminal through the matching between the groove body and the bulge.

Compared with the prior art, the utility model provides a lamps and lanterns fixing device sets up corresponding cell body through setting up the arch on third conductive terminal on central electrode, after connecting seat and fixing base butt joint installation, through the arch on the third conductive terminal of cell body centre gripping, restricts third conductive terminal's motion, makes central electrode can with third conductive terminal good contact, improves the electric connection strength between connecting seat and the fixing base. In addition, through the above structural design, the clamped third conductive terminal can also keep the electrical connection with the central electrode even if rotating around the shaft, so that the user can simultaneously complete the mechanical connection and the electrical connection between the connecting seat and the fixed seat through simple and coherent single action while ensuring the reliability of the electrical connection.

Preferably, the third conductive terminal is a columnar shape, and the center electrode is formed in a tapered shape converging toward the bottom of the third receiving groove.

The third conductive terminal is set to be columnar, and the center electrode is set to be conical and tightened towards the bottom of the third accommodating groove, so that after the third conductive terminal is inserted into the center electrode, the protrusion can be abutted against the side wall of the center electrode due to the gradual tightening of the size of the center electrode. The third conductive terminal is clamped by the central electrode, so that the electric contact between the third conductive terminal and the central electrode can be ensured.

Preferably, the protrusions are formed in a spherical shape.

Compared with the bulges with other shapes, the spherical bulge is smoother, and is beneficial to the installation and the disassembly between the central electrode and the third conductive terminal.

Further, preferably, the central electrode comprises at least two lobe-like structures.

The central electrode is formed into a plurality of petal-shaped structures, and can be opened and closed to a certain degree, so that the insertion action of the third conductive terminal is smoother. And after the protrusions are installed in place, the protrusions are clamped by the groove body, so that the third conductive terminal is locked, and the electric contact between the third conductive terminal and the central electrode is ensured.

Preferably, the spherical protrusion is integrally formed with the third conductive terminal, and the connection transition portion between the protrusion and the third conductive terminal is arc-shaped.

The bulge and the third conductive terminal are integrally formed, so that the strength of the third conductive terminal can be effectively enhanced, and the third conductive terminal can be prevented from being separated from the spherical bulge to influence the electric connection between the fixed seat and the connecting seat. And the connection transition part between the bulge and the third conductive terminal is arc-shaped, so that the bulge can be easily separated from the groove body when being subjected to downward pulling force, and the third conductive terminal is conveniently separated from the central electrode.

Preferably, the free end of the third conductive terminal is formed as a smooth guide portion.

The free end of the third conductive terminal forms a smooth guiding part, so that the third conductive terminal can be more easily inserted into the central electrode, and the abrasion between the third conductive terminal and the central electrode is reduced.

In addition, preferably, the outer surface of the projection and the inner surface of the groove are formed as frosted surfaces.

When relative motion or a tendency of relative motion occurs between the frosted surfaces, the frictional force between the two is greater than that of the smooth surfaces. Therefore, when the protrusion is clamped with the groove body, the outer surface of the protrusion is in contact with the inner surface of the groove body, so that the protrusion can bear larger friction force, and the center electrode can clamp the third conductive terminal.

Preferably, the outer surface of the projection and the inner surface of the groove are formed as a surface with a pattern.

When relative motion or a tendency to relative motion occurs between patterned surfaces, the frictional force between the two is greater than for smooth surfaces. Therefore, when the protrusion is clamped with the groove body, the outer surface of the protrusion is in contact with the inner surface of the groove body, and the protrusion is subjected to larger friction force, so that the center electrode is favorable for clamping the third conductive terminal.

Preferably, the center electrode is further provided with a fastening device, and the fastening device can make the center electrode drawn toward the third conductive terminal.

The fastening device can fold the central electrode, so as to further clamp the third conductive terminal inserted into the central electrode, thereby ensuring the electric contact between the third conductive terminal and the central electrode.

Drawings

Fig. 1 is a schematic structural view of a lamp fixing device according to the present invention;

fig. 2 is a schematic view of the center electrode of the present invention mated with a third conductive terminal;

fig. 3 is a schematic view of the contact surface between the center electrode and the third conductive terminal of the present invention being a frosted surface;

fig. 4 is a schematic view of the contact surface between the center electrode and the third conductive terminal of the present invention being a patterned surface;

fig. 5 is a schematic view of the lamp fixing device of the present invention, wherein a ring is sleeved on the center electrode.

Description of the reference numerals

1-a fixing base, 102-a fixing piece, 1022-a fixing hole, 104-a first body portion, 106-a first electrical connection portion, 106 a-a first receiving slot, 106 b-a second receiving slot, 106 c-a third receiving slot, 107 c-a central electrode, 107c 1-a first lobe structure, 107c 2-a second lobe structure, 108-a first combination portion, 1082-a bump, 2-a connection seat, 202-a second body portion, 204-a second receiving cavity, 206-a second combination portion, 208-a rotation fixing structure, 2082-a pre-connection slot, 2084-a mounting slot, 2086-a wedge projection, 210-a second electrical connection portion, 210 a-a first conductive terminal, 210 b-a second conductive terminal, 210 c-a third conductive terminal, 212-an elastic element, 3-groove body, 4 a-bulge, 4 b-guide part, 5-circular ring, 6-switch, 7 a-frosting surface and 7 b-pattern.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The structure and the like of the luminaire fixture are schematically shown in a simplified manner in the figures.

As shown in fig. 1, the lamp fixing device of the present embodiment includes a fixing base 1 and a connecting base 2, which are used in cooperation with each other. Wherein, fixing base 1 can be installed in advance on wall body surface or ceiling, and connecting seat 2 can be used as the adaptor alone, also can be with lamps and lanterns be connected in advance or direct and lamps and lanterns integrated into one piece to through the cooperation between fixing base 1 and the connecting seat 2, fix lamps and lanterns on wall or ceiling surface, switch on lamps and lanterns and commercial power through the electric connection with the wall electric wire simultaneously.

Specifically, one end of the fixing base 1 (the upper end of the fixing base 1 in fig. 1) of the lamp fixing device provided in this embodiment is used for being connected with a substrate such as a wall surface or a ceiling, and the other end (the lower end of the fixing base 1 in fig. 1) is used for being connected with the connecting base 2.

The upper end face of the fixing base 1 is configured to be a plane so that the fixing base can be fixed to a wall surface or a ceiling surface, a plurality of fixing pieces 102 integrally formed with the main body portion extend from the outer edge of the upper end face in the radial direction, fixing holes 1022 are formed in the fixing pieces 102, and an installer of the fixing base 1 can use self-tapping screws to penetrate through the fixing holes 1022 to fix the fixing base 1 on the wall surface or the ceiling surface.

In the present embodiment, the number of the fixing members 102 is configured to be four, and the fixing members are uniformly arranged along the outer edge of the upper end surface of the fixing base 1. For a square lamp, after the installation, it is required to ensure that each side of the square lamp is parallel to four sides of a house, however, in some embodiments of the present invention, the fixing seat 1 and the connecting seat 2 of the lamp fixing device are installed in a rotating and clamping manner, the lamp can only be screwed into the groove at several discontinuous angles, and if an installer installs the fixing seat 1 at random angles, the lamp fixing device is difficult to adapt to the square lamp. Therefore, in the present embodiment, the number of the fixing members 102 is configured to be four, and the fixing members 102 are uniformly arranged along the circumferential direction of the outer edge, so that an installer can use the fixing members 102 as indicators of the installation direction, and the fixing base 1 can be better adapted to the installation of a square lamp.

In other embodiments of the present invention, the number of the fixing members 102 may also be two, three or more than four according to actual needs. In the embodiment where the number of the fixing members 102 is four or more, four of the fixing members 102 arranged at an interval of 90 ° may be used as indicators of the installation direction, and may be adapted to the installation of other shape lamps by the cooperation with other fixing members 102.

The main body of the fixing base 1 of this embodiment is a cylindrical first main body 104, which has a hollow structure inside and has a cavity for accommodating the electrical connection part and other functional components.

The lower end surface of the first body 104 is configured as a circular plane, a first electrical connection portion 106 for connecting an electrical appliance is disposed at the center position thereof, the first electrical connection portion 106 is configured as two annular groove bodies and one circular groove body which are coaxially disposed, the first accommodation groove 106a (annular), the second accommodation groove 106b (annular) and the third accommodation groove 106c (circular) are sequentially arranged from outside to inside, and the first accommodation groove 106a, the second accommodation groove 106b and the third accommodation groove 106c respectively accommodate therein an L electrode, an N electrode and an E electrode for communicating with a live wire, a neutral wire and a ground wire of a commercial power. The L electrode, the N electrode and the E electrode are arranged in each accommodating groove, so that the safety problem caused by the exposure of the electrodes can be prevented. The structures of the L electrode, the N electrode and the E electrode can be adjusted according to the actual conditions according to the shapes of different tanks.

The lower end face of the first main body 104 of the fixing base 1 is parallel to the upper end face of the fixing base 1, so that the lamp can be conveniently and horizontally installed. The outer edge of the lower end face is provided with a first coupling portion 108 configured as a plurality of radially extending projections 1082 arranged uniformly in the circumferential direction. In this embodiment, the number of the projections 1082 is specifically configured to be four, which is the same as the number of the fixing members 102, and the arrangement positions also correspond to the fixing members 102 (each of the projections 1082 arranged correspondingly is located in substantially the same radial direction passing through the symmetry axis of the fixing member 102 as the fixing member 102). Through the mode, when the projection 1082 bears the weight of the lamp, a part of the weight can be effectively transferred to the fixing part 102, and the bearing performance of the fixing base 1 is improved. In some preferred embodiments of the present invention, a U-shaped plate for reinforcing can be erected between the fixing member 102 and the protrusion 1082, so as to enhance the strength, enhance the mechanical transmission between the protrusion 1082 and the fixing member 102, and enhance the load-bearing performance.

Corresponding to the fixing base 1, the main body of the connecting base 2 is a second main body 202, and one end of the second main body 202 (the upper end of the connecting base 2 in fig. 1) is provided with a second receiving cavity 204 recessed into the connecting base 2 for receiving the first main body 104 of the fixing base 1.

The inner wall of the second receiving cavity 204 is provided with a second combining portion 206 for matching with the first combining portion 108 at the outer edge of the first main body portion 104, the second combining portion 206 is configured as a plurality of sets of rotation fixing structures 208 which are uniformly and alternately arranged along the circumferential direction and have the same number as the protrusions 1082, each set of rotation fixing structures 208 includes a pre-connecting groove 2082 which is arranged at the inner wall of the second receiving cavity 204 and is arranged towards the opening portion of the second receiving cavity 204 along the axial direction of the second receiving cavity 204, and a mounting groove 2084 which is arranged at the inner wall of the second receiving cavity 204 and is arranged along the circumferential direction of the second receiving cavity 204. Connect groove 2082 and mounting groove 2084 intercommunication in advance, lug 1082 gets into connect groove 2082 in advance along axial motion, when removing to connect groove 2082 bottom in advance, is located (or is close to) the notch department of mounting groove 2084 just, and the connecting seat 2 is rotated around the center pin this moment, can slide lug 1082 in the mounting groove 2084. After the protruding block 1082 is screwed into the mounting groove 2084, the gravity of the connecting seat 2 or the lamp can be pressed on the protruding block 1082 of the fixing seat 1 through the upper side wall of the mounting groove 2084 to support the lamp to be fixed.

In this embodiment, the upper side wall of the notch of the mounting groove 2084, i.e. the side wall close to the open end of the second receiving cavity 204, is provided with a wedge-shaped protrusion 2086, one side of the wedge-shaped protrusion 2086 close to the notch is a slope with a small slope (preferably 10 ° -30 °), and the slope can be used as a guide surface for the protrusion 1082 to slide into the mounting groove 2084; the perpendicular or the basic perpendicular mounting groove 2084's of the one side of keeping away from the notch of wedge-shaped protruding 2086 lateral wall, when lug 1082 passes through this wedge-shaped protruding 2086, when getting into the mounting groove 2084 completely, under the effect of gravity or other messenger fixing base 1 and connecting seat 2 separation's power, lug 1082 will lean on and extrude the last lateral wall of mounting groove 2084 fixed, lug 1082 can be supported along transversely to one side of this wedge-shaped protruding 2086 perpendicular to lateral wall, prevent that the lamps and lanterns from taking place the counter rotation because of itself rocks or operator's improper operation, roll-off in the mounting groove 2084.

The second electrical connection portion 210 is disposed at the center of the bottom of the second receiving cavity 204 and used in cooperation with the first electrical connection portion 106 on the fixing base 1, the second electrical connection portion 210 is configured as two coaxially disposed circular cylindrical conductive terminals and a circular needle-shaped conductive terminal, and includes a first conductive terminal 210a (circular ring shape), a second conductive terminal 210b (circular ring shape) and a third conductive terminal 210c (circular needle shape) in sequence from outside to inside, and the first conductive terminal 210a, the second conductive terminal 210b and the third conductive terminal 210c are respectively used for electrically connecting with the L electrode, the N electrode and the E electrode in the first receiving groove 106a, the second receiving groove 106b and the third receiving groove 106 c.

The center axis shared by the first conductive terminal 210a, the second conductive terminal 210b, and the third conductive terminal 210c, which are coaxially disposed, coincides with the rotational symmetry axis of the plurality of rotational fixing structures 208, and the center axis shared by the first receiving groove 106a, the second receiving groove 106b, and the third receiving groove 106c, which are coaxially disposed, coincides with the rotational symmetry axis of the plurality of bumps 1082, which are rotationally symmetric. When the protrusion 1082 corresponds to the position of the pre-connection groove 2082 in the rotating fixed structure 208, the first electrical connection portion 106 and the second electrical connection portion 210 are also in the corresponding positions. Through the mode, lamp installer also can accomplish the alignment of first electrical connecting part 106 and second electrical connecting part 210 simultaneously at the in-process of lifting lamp, with lug 1082 to going into pre-connection groove 2082, and then can accomplish mechanical connection and electric connection between connecting seat 2 and fixing base 1 through simple coherent single action more, has improved the installation effectiveness.

In some embodiments of the present invention, the luminaire fixture further has a resilient element 212. The elastic element 212 may be disposed on the bottom end surface of the fixing base 1, or may be disposed on the bottom of the second receiving cavity 204 of the connecting base 2. When the first body 104 of the fixing base 1 enters the second receiving cavity 204 and is rotated and fixed, the elastic element 212 in a compressed state applies axial acting force to the bottom of the first body 104 and the bottom of the second receiving cavity 204, respectively, and the axial acting force can abut against the fixing base 1 and the connecting base 2 along the axial direction on one hand, so as to restrain the axial relative motion between the fixing base 1 and the connecting base 2; on the other hand, the axial acting force can also increase the static friction force between the elastic element 212 and the position abutted and extruded, so that the relative movement between the fixed seat 1 and the connecting seat 2 along the circumferential direction is inhibited, and the stability of the lamp fixing device is improved.

In this embodiment, four through holes are formed at the bottom of the second receiving cavity 204, and the four elastic elements 212 are respectively disposed through the through holes and can move up and down in the through holes. When the operator dismantles the lamp, the operator needs to push up the lamp first and then rotate the lamp to pull the lamp out. In this embodiment, the position that sets up of through-hole keeps corresponding with the position of mounting groove 2084, and when making the operator exert bigger thrust, the axial displacement of lug 1082 in mounting groove 2084 is also bigger, reduces the influence that the atress of material itself warp and causes the dismantlement process, and lug 1082 deviates from in mounting groove 2084 during convenient to detach.

The following is a description of a specific use method of the lamp fixing device of the present embodiment during the installation and removal processes. Wherein, the installation process includes the following steps:

first, the fixing base 1 is installed in advance on a wall surface or a ceiling during building construction or finishing. After the wall surface electric wire is inserted into the corresponding interface of each electrode on the fixed seat 1 and fixed, the self-tapping screw is used to pass through the fixing hole 1022, and the fixed seat 1 can be fixed on the wall surface or the ceiling.

Next, the connecting socket 2 is aligned with the fixing socket 1, the connecting socket 2 is pushed up, each pre-connecting groove 2082 of the connecting socket 2 is used to receive each bump 1082 of the fixing socket 1, and when each bump 1082 is received in each pre-connecting groove 2082, the first conductive terminal 210a, the second conductive terminal 210b, and the third conductive terminal 210c are simultaneously pushed into the first receiving groove 106a, the second receiving groove 106b, and the third receiving groove 106c, respectively, due to the limitation of the geometric relationship. During the process of moving the bump 1082 to the bottom of the pre-connection groove 2082, the first conductive terminal 210a, the second conductive terminal 210b, and the third conductive terminal 210c will also be in contact with and electrically connected to the L electrode, the N electrode, and the E electrode, respectively.

Afterwards, the connecting seat 2 is rotated, the protruding block 1082 is pushed into the mounting groove 2084 along the circumferential direction, and the protruding block 1082 moves to the position limiting structure at the bottom of the mounting groove 2084. In the process of rotating the connecting seat 2, due to the axial acting force applied by the elastic element 212, the projection 1082 always abuts against and presses the upper side wall of the mounting groove 2084, and therefore, in the rotating process, the side inclined surface with the smaller gradient of the wedge-shaped protrusion 2086 always keeps guiding the position of the projection 1082. When the projection 1082 passes over the wedge-shaped protrusion 2086, the projection 1082 collides with the side wall of the mounting groove 2084 under the action of the elastic element 212, and the sound generated by the collision can prompt the installer to mount the mounting groove in place. In addition, because the central part for electric connection is in a circular or round shape, the circular or round conductive terminal can keep the electric connection with the electrode in the containing groove no matter how the conductive terminal rotates, and the rotation and the fixation of the mechanical connection part at the outer edge cannot be interfered.

Finally, the projection 1082 installed in place keeps circumferential and axial stability under the combined action of the elastic element 212 and the wedge-shaped protrusion 2086, and is difficult to slide out of the installation groove 2084, so that the stability of installation between the fixed seat 1 and the connecting seat 2 is ensured.

The installer can disassemble the lamp in the following way: firstly, the connecting seat 2 is pushed upwards, so that the mounting groove 2084 moves axially to the height at which the convex block 1082 can slide out; afterwards, the connecting seat 2 is rotated, and the protruding block 1082 slides out of the mounting groove 2084.

In order to further enhance the electrical connection strength between the fixing base 1 and the connecting socket 2, referring to fig. 2, in the lamp fixing device of the present embodiment, the third conductive terminal 210c has a protrusion 4a with a circular cross-sectional shape arranged along the radial direction, the third receiving groove 106c has a center electrode 107c arranged corresponding to the third conductive terminal 210c, and the center electrode 107c has a groove body 3 with a shape matched with the protrusion 4a, so as to clamp the third conductive terminal 210c by the matching between the groove body 3 and the protrusion 4 a.

Compared with the prior art, the utility model provides a lamps and lanterns fixing device sets up protruding 4a through setting up on third conductive terminal 210c, sets up corresponding cell body 3 on central electrode 107c, after connecting seat 2 docks the installation with fixing base 1, through protruding 4a on the 3 centre gripping third conductive terminal 210c of cell body, thereby restrict the motion of third conductive terminal 210c, make the electrode can well contact with third conductive terminal 210c, improved the electric connection intensity between connecting seat 2 and the fixing base 1.

In the preferred embodiment of the present invention, referring to fig. 2, the central electrode 107c is formed into a plurality of petal-shaped structures, and the petal-shaped structures can be opened and closed to a certain extent, so that the insertion of the third conductive terminal 210c is smoother, and the protrusion 4a can be clamped after the protrusion 4a is inserted in place, so as to lock the third conductive terminal 210c, thereby ensuring the electrical contact between the third conductive terminal 210c and the central electrode 107 c. It should be noted that, in the present embodiment, the plurality of petal-shaped structures are elastic pieces, and can move in cooperation with the insertion and the separation of the third conductive terminal 210 c. Specifically, in the present embodiment, referring to fig. 2 to 5, the center electrode 107c is formed in two lobe-like structures: the first lobe structure 107c1 and the second lobe structure 107c2, with the insertion of the third conductive terminal 210c, the first lobe structure 107c1 and the second lobe structure 107c2 are separated from each other by the thrust of the protrusion 4a, so that the protrusion 4a can move into the groove 3. When the protrusion 4a moves to the right position, the first petal-shaped structure 107c1 and the second petal-shaped structure 107c2 are folded to each other, so that the groove 3 is ensured to clamp the protrusion 4a, and the electrical connection between the two is firmer.

It is worth mentioning that, in the utility model discloses in, because connecting seat 2 and fixing base 1 dock or when dismantling, protruding 4a needs certain motion space. Therefore, in the preferred embodiment of the present invention, the size of the groove 3 is slightly larger than that of the protrusion 4 a.

Also, in the present embodiment, as shown in fig. 2, the center electrode 107c is formed in a tapered shape converging toward the bottom of the third accommodation groove 106 c. After the third conductive terminal 210c is inserted into the center electrode 107c, since the size of the center electrode 107c is gradually tightened, the protrusion 4a can be abutted against the groove 3 of the center electrode 107c more tightly, so that the center electrode 107c clamps the third conductive terminal 210c, and the electrical contact between the third conductive terminal 210c and the center electrode 107c is ensured. Moreover, when the connecting socket 2 is separated from the fixing socket 1, the protrusion 4a receives the reaction force of the center electrode 107c, so that the third conductive terminal 210c is more easily separated from the center electrode 107 c.

Specifically, in the preferred embodiment of the present invention, referring to fig. 2, the protrusions 4a are formed in a spherical shape. The spherical protrusion 4a is more rounded than the protrusions 4a of other shapes, and thus, the mounting and dismounting of the center electrode 107c to and from the third conductive terminal 210c is facilitated. Of course, in other embodiments of the present invention, the protrusion 4a may also be in the shape of an ellipsoid, as long as the technical effect of improving the electrical contact between the central electrode 107c and the third conductive terminal 210c can be achieved and the assembly and disassembly can be facilitated.

In order to facilitate the assembly and disassembly of the center electrode 107c and the third conductive terminal 210c, in some embodiments of the present invention, the spherical protrusion 4a is integrally formed with the third conductive terminal 210c, and a connection transition portion between the protrusion 4a and the third conductive terminal 210c is arc-shaped.

The protrusion 4a and the third conductive terminal 210c are integrally formed to prevent the third conductive terminal 210c and the spherical protrusion 4a from being separated from each other, thereby affecting the electrical connection between the fixing base 1 and the connecting socket 2. Moreover, the connection transition portion between the protrusion 4a and the third conductive terminal 210c is in an arc shape, and when the protrusion 4a is under a downward pulling force, the protrusion can be more easily separated from the slot body 3, so that the third conductive terminal 210c is separated from the center electrode 107 c.

In order to facilitate the insertion of the third conductive terminal 210c into the center electrode 107c and reduce the abrasion between the center electrode 107c and the third conductive terminal 210c, in a preferred embodiment of the present invention, referring to fig. 2-5, the free end of the third conductive terminal 210c is formed as a smooth guiding portion 4 b.

Specifically, the guide portion 4b may be formed as a spherical surface or a curved surface such as a paraboloid of revolution, so that the third conductive terminal 210c can be more easily inserted into the center electrode 107c and abrasion between the third conductive terminal 210c and the center electrode 107c is reduced.

In order to further improve the fixing effect of the groove 3 on the protrusion 4a, thereby improving the electrical connection strength between the fixing base 1 and the connecting base 2, in the preferred embodiment of the present invention, as shown in fig. 3, the outer surface of the protrusion 4a and the inner surface of the groove 3 are formed as the frosted surface 7 a.

The frictional force received when relative movement is generated between the frosted surfaces 7a is larger than that of the smooth surfaces, and therefore, when the protrusions 4a are engaged with the tank body 3, the outer surfaces of the protrusions 4a are brought into contact with the inner surface of the tank body 3. When the third conductive terminal 210c tends to move downward, since the two surfaces in contact are the frosted surfaces 7a, the protrusions 4a are subjected to a larger frictional force to overcome the tendency of the third conductive terminal 210c to move downward, thereby facilitating the center electrode 107c to clamp the third conductive terminal 210 c.

Furthermore, in other embodiments of the present invention, as shown in fig. 4, the outer surface of the projection 4a and the inner surface of the groove body 3 are formed as a surface with a pattern 7 b. Similarly, when the protrusion 4a is engaged with the slot 3, the outer surface of the protrusion 4a contacts the inner surface of the slot 3, and since the two surfaces contacting each other are the surfaces with the patterns 7b, the protrusion 4a is subjected to a larger frictional force to overcome the influence of gravity. In fig. 4, the pattern 7b on the center electrode 107c is not shown.

It is worth mentioning that, in some embodiments of the present invention, a fastening device is further disposed on the central electrode 107c, and the fastening device can tighten the central electrode 107c, so that the central electrode 107c is folded toward the third conductive terminal 210 c. The securing device can collapse the center electrode 107c to further clamp the third conductive terminal 210c through the center electrode 107c, thereby ensuring electrical contact between the third conductive terminal 210c and the center electrode 107 c.

Specifically, in the present embodiment, referring to fig. 5, the fastening device may be a ring 5 that is sleeved on the center electrode 107c and can be loosened or tightened, and the tightening or loosening operation of the ring 5 can be controlled by a switch 6 provided on the fixing base 1. When the connecting seat 2 and the fixing seat 1 are mounted in a butt joint manner, the adjusting switch 6 controls the ring 5 to be loosened, so that the third conductive terminal 210c can be inserted into the central electrode 107c, and after the protrusion 4a on the third conductive terminal 210c is clamped with the groove body 3 on the central electrode 107c, the adjusting switch 6 controls the ring 5 to be tightened, so that the petal-shaped structure of the central electrode 107c is folded, and the third conductive terminal 210c is further clamped to improve the strength of the electrical contact between the central electrode 107c and the third conductive terminal 210 c.

So far, the technical solution of the present invention has been described with reference to the accompanying drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A lamp fixing device comprises a fixing seat and a connecting seat; the fixing seat comprises a first main body part and at least two convex blocks arranged along the circumferential direction of the first main body part; the connecting seat is provided with a second main body part, the second main body part is provided with an accommodating cavity for accommodating the first main body part, and the inner wall of the accommodating cavity is provided with at least two mounting grooves along the circumferential direction; the lug of the fixing seat enters from the opening end of the mounting groove and rotates to the bottom of the mounting groove around the central shaft of the accommodating cavity along the circumferential direction of the inner wall of the accommodating cavity so as to realize mechanical connection between the fixing seat and the connecting seat;

an accommodating groove is formed in the center of one surface, used for entering the accommodating cavity and butted with the connecting seat, of the first main body part, and an electrode is arranged at the bottom of the accommodating groove;

a conductive terminal is arranged in the center of the bottom of the accommodating cavity; it is characterized in that the preparation method is characterized in that,

the conductive terminal is provided with a central terminal which extends along the direction of the central shaft of the accommodating cavity, and the central terminal is provided with a bulge which is arranged along the radial direction and has a circular cross section;

the accepting groove is provided with a central electrode which is correspondingly arranged with the central terminal, the central electrode is provided with a groove body with the shape matched with the bulge, so that the central terminal can be clamped through the matching between the groove body and the bulge.

2. The lamp fixture device of claim 1, wherein the central terminal is cylindrical, and the central electrode is tapered toward the bottom of the receiving groove.

3. The luminaire fixture of claim 2 wherein the protrusion is formed in a spherical shape.

4. The luminaire fixture of claim 3 wherein the central electrode comprises at least two lobe-like structures.

5. The luminaire fixture of claim 3 wherein the spherical boss is integrally formed with the center terminal and the connecting transition portion between the boss and the center terminal is arcuate.

6. The luminaire fixture of claim 2 wherein the free end of the center terminal is formed as a rounded guide.

7. The luminaire-securing device of claim 1, wherein the convex outer surface and the inner surface of the channel are formed as frosted surfaces.

8. The luminaire securing device of claim 1 wherein the convex outer surface and the inner surface of the channel are formed as textured surfaces.

9. The lamp fixture device of any one of claims 1-8 wherein a fastening device is further disposed on the center electrode, the fastening device enabling the center electrode to be folded toward the center terminal.