Anti-loosening connecting device and photography lamp

Abstract

The utility model discloses an anti-loosening connecting device which comprises a connector and a support, the support is provided with a connecting base, the connector is provided with a first guide face, the connecting base is provided with a connecting groove, the inner wall of the connecting groove is provided with a second guide face, and the second guide face is in sliding fit with the first guide face and used for guiding the connector to slide into the connecting groove. And the connector is tightly matched with the connecting groove. The photography lamp comprises a lamp body and the anti-loosening connecting device, the lamp body comprises a lamp shell, and the lamp shell is connected with the connector. During assembly, the lamp shell of the lamp body is connected with the connector, then the connector slides into the connecting groove in the connecting base on the support, and the first guide face and the second guide face are arranged on the inner wall of the connector and the inner wall of the connecting groove respectively, so that the connector can be guided by the first guide face and the second guide face to be connected with the lamp body. And therefore, the assembly is convenient, the connection is firm, and the possibility of looseness is low.

Description

Technical Field

[0001] The utility model relates to the technical field of photography, in particular to a connection device for preventing loosening and a photographic lamp. Background Art

[0002] In the photography industry, various lamps need to be fixed by brackets, and the weight and size of the lamp are proportional to the torque received by the bracket. Currently, when fixing the lamp body with a bracket on the market, generally, connecting pieces are respectively arranged on the lamp body and the bracket, and then the front planes of the two connecting pieces are pressed against each other. Through the frictional force of the contact plane, the lamp body and the bracket are relatively fixed. However, when the lamp body is heavy and the force arm is long, under the action of an additional external force, the frictional force of the contact surface is likely to be unable to overcome the external force torque, resulting in relative rotation between the lamp body and the bracket and affecting the light output position. Summary of the Utility Model

[0003] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a connection device for preventing loosening and a photographic lamp. The lamp body of the device is in sliding fit with the second guiding surface of the connection groove on the bracket through the first guiding surface on the connection head, and the two guiding surfaces are used to guide the tight fit between the two, so that they are not easy to loosen.

[0004] The technical solution adopted by the utility model to solve its problems is as follows:

[0005] A connection device for preventing loosening, comprising a connection head and a bracket. A connection seat is arranged on the bracket, a first guiding surface is arranged on the connection head, a connection groove is arranged on the connection seat, a second guiding surface is arranged on the inner wall of the connection groove, and the second guiding surface is in sliding fit with the first guiding surface and is used to guide the connection head to slide into the connection groove so that the connection head and the connection groove are tightly fitted.

[0006] Further, the connection seat comprises a first shell and a second shell. A first installation groove is arranged on the first shell, a second installation groove is arranged on the second shell, a first connecting piece is arranged on the first shell, a second connecting piece is arranged on the second shell, and the first shell and the second shell are detachably connected through the first connecting piece and the second connecting piece so that the first installation groove and the second installation groove are combined to form the connection groove; the second guiding surface is arranged on at least one of the first installation groove and the second installation groove.

[0007] Further, both the connection head and the connection groove are frustum-shaped, the first guiding surface is the outer peripheral surface of the connection head, and the second guiding surface is the side wall of the connection groove.

[0008] Further, a clamping groove is provided on the first housing, and a connecting arm is provided on the second housing. The connecting arm serves as the second connecting member, and the connecting arm is hinged into the clamping groove so that the second housing is rotatably connected to the first housing and is used to cover or open the first installation groove when being rotated by force.

[0009] Further, first through holes are provided on both sides of the clamping groove, and second through holes are provided on both sides of the connecting arm. A rotating shaft is inserted into the first through holes. The rotating shaft serves as the first connecting member; the rotating shaft is sequentially inserted into the first through holes and the second through holes so that the second housing is rotatably connected to the first housing.

[0010] Further, the connecting seat further includes a locking member, and the locking member sequentially passes through the second housing and the first housing to lock the connecting seat.

[0011] Further, the locking member includes a locking rod. A third through hole is provided on the first housing, and a fourth through hole is provided on the second housing. The fourth through hole is correspondingly arranged with the third through hole, and the locking rod is sequentially inserted into the fourth through hole and the third through hole.

[0012] Further, the locking rod is a threaded rod, both the third through hole and the fourth through hole are threaded holes, and the threaded rod is in threaded fit with the threaded holes.

[0013] Further, a handle is further provided on the locking rod. The handle is arranged at one end of the locking rod away from the second housing and is used to hold the locking rod.

[0014] A photographic lamp includes a lamp body and the anti-loosening connecting device as described above. The lamp body includes a lamp housing, and the lamp housing is connected to the connecting head.

[0015] In summary, an anti-loosening connecting device and a photographic lamp provided by the present utility model have the following technical effects: during assembly, the lamp housing of the lamp body is connected to the connecting head, and then the connecting head is slid into the connecting groove in the connecting seat on the bracket. Since the first guiding surface and the second guiding surface are respectively arranged on the connecting head and the inner wall of the connecting groove, the connecting head can smoothly slide into the connecting groove and be tightly fitted under the guidance of the first guiding surface and the second guiding surface. The assembly is convenient, and the connection is firm and not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the exploded view of the structure of the present utility model;

[0017] Figure 2 is the schematic view of the structure of the present utility model;

[0018] Figure 3This is a structural sectional view of the present utility model;

[0019] Figure 4 This is a schematic structural view of the connector and the connection base in the present utility model;

[0020] Among them, the meanings of the reference numerals are as follows:

[0021] 10. Bracket; 11. Locking rod; 111. Handle; 12. Connection base; 121. First housing; 1211. First installation groove; 1212. Card slot; 1213. First through hole; 1214. Third through hole; 122. Second housing; 1221. Second installation groove; 1222. Connection arm; 1223. Second through hole; 1224. Fourth through hole; 123. Connection groove; 124. Second guiding slope; 123. Connection groove; 124. Second guiding surface; 20. Connector; 21. First guiding surface; 30. Lamp housing. Detailed implementation manners

[0022] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0025] Embodiment 1

[0026] Refer to Figures 1 to 4 , the present utility model discloses a connection device for preventing loosening, including a connector 20 and a bracket 10. A connection base 12 is provided on the bracket 10. A first guiding surface 21 is provided on the connector 20. A connection groove 123 is provided on the connection base 12. And a second guiding surface 124 is provided on the inner wall of the connection groove 123. Specifically, the second guiding surface 124 is in sliding fit with the first guiding surface 21 and can be used to guide the connector 20 to slide into the connection groove 123 so that the connector 20 and the connection groove 123 are tightly fitted.

[0027] Based on the above structure, when the connecting head 20 is assembled with the bracket 10, since the first guiding surface 21 is provided on the connecting head 20 and the second guiding surface 124 is provided in the connecting groove 123 of the connecting seat 12 on the bracket 10, the second guiding surface 124 and the first guiding surface 21 can be set to be in sliding fit. In this way, the connecting head 20 can smoothly slide into the connecting groove 123 under the guidance of the second guiding surface 124 and be in tight fit with it, making the assembly process convenient.

[0028] Specifically, the first guiding surface 21 can be an inclined surface provided on the outer periphery of the connecting head, and the second guiding surface 124 can be an inclined surface formed on the side wall of the connecting groove 123. When the two inclined surfaces are correspondingly arranged and in sliding fit, when the connecting head 20 is assembled with the connecting seat 12, compared with the design of the flat surface of the connecting head 20 and the connecting groove 123, due to the design of the inclined surface, the contact area between the connecting head 20 and the connecting groove 123 is larger when they come into contact, and a greater frictional force can be generated on the contact surface. This frictional force helps to prevent the connecting head 20 from loosening or slipping when subjected to external forces, thereby improving the stability of the connection; in addition, as the connecting head 20 is further inserted into the connecting groove 123, the design of the inclined surface will produce a "locking effect". Due to the angle and shape of the inclined surface, after the connecting head 20 reaches the predetermined position, the connecting head 20 will be more tightly locked in the connecting groove 123, further enhancing the stability of the connection. Therefore, the connecting head 20 is in tight fit with the connecting groove 123, making the connection between the connecting head 20 and the bracket 10 more firm and not easy to loosen.

[0029] More specifically, due to the design of the inclined surface, it can play a good guiding role in the assembly process, enabling the connecting head 20 to more easily slide into the connecting groove 123 along the inclined surface without the need for precise alignment operations like a flat surface to flat surface structure. This guiding role greatly reduces the assembly difficulty and improves the assembly efficiency; and due to the presence of the inclined surface, when the connecting head 20 is inserted into the connecting groove 123, even if there is a certain deviation in the initial position, the inclined surface will automatically guide the connecting head 20 to perform centering adjustment, making the assembly process simpler and faster, and at the same time improving the assembly accuracy.

[0030] Of course, the first guiding surface 21 and the second guiding surface 124 can also be conical surfaces formed on the outer periphery of the connecting head 20 and the side wall of the connecting groove 123 respectively. At this time, the connecting head 20 is a conical block, and the connecting groove 123 in the connecting seat 12 is a conical groove. Through the conical design, when the connecting head 20 and the connecting groove 123 are assembled, as the connecting head 20 penetrates deeper into the connecting groove 123, the conical angle will gradually decrease and the contact area will gradually increase, thereby generating a self-locking effect. This effect makes the connecting head 20 not easy to loosen when subjected to external forces, ensuring the tightness of the connection.

[0031] Compared with the flat-to-flat assembly method, in the assembly process of the conical surface design, due to the angle change of the conical surface, the contact area between the connector 20 and the connection groove 123 gradually increases. A larger contact area means greater friction, thereby enhancing the tightness of the connection.

[0032] In addition, the connection groove 123 and the connector 20 can be respectively designed as frustum-shaped. At this time, the first guiding surface 21 is formed on the outer peripheral surface of the connector, and the second guiding surface 124 is the side wall of the connection groove 123, so that both have a certain taper. Therefore, when the connector 20 is completely inserted into the connection groove 123, due to the taper and inclination of the mutually contacting first guiding surface 21 and the second guiding surface 124, during the insertion process, the connector 20 can gradually penetrate into the connection groove 123, and as the insertion depth increases, the contact area also gradually increases, making the connection more firm;

[0033] At the same time, due to the existence of the taper, as the connector 20 penetrates deeper into the connection groove 123, the taper will gradually decrease and the contact area will gradually increase, thereby generating a self-locking effect. This effect makes the connector 20 not easily loosen when subjected to an external force, ensuring the tightness of the connection.

[0034] Therefore, when applying the anti-loosening connection device in this embodiment to a photographic lamp or other equipment that needs to cooperate with the bracket 10, during assembly, the equipment can be first connected to the connector 20, and then the connector 20 is inserted into the connection groove 123 on the connection base 12. Since the first guiding surface 21 and the second guiding surface 124 are respectively provided on the inner wall of the connector 20 and the connection groove 123, the connector 20 can smoothly slide into the connection groove 123 for a tight fit under the guidance of the first guiding surface 21 and the second guiding surface 124, and the assembly is convenient;

[0035] And because the first guiding surface 21 and the second guiding surface 124 adopt a conical surface or inclined surface design, even if the equipment connected to the connector 20 is heavy or has a long lever arm, due to the self-locking effect of the conical surface or inclined surface design, the connector 20 is still firm and not easily loosened when subjected to an external force, ensuring the tightness of the connection.

[0036] It should be noted that the connection base 12 can be detachably connected to the bracket 10 by a detachable connection method (such as screw connection or snap connection, etc.), so that the entire device can be applicable to other structures and has a wider scope of application.

[0037] Further, the above-mentioned connecting seat 12 includes a first housing 121 and a second housing 122. A first mounting groove 1211 is provided on the first housing 121, and a second mounting groove 1221 is provided on the second housing 122. A first connecting member is provided on the first housing 121, and a second connecting member is provided on the second housing 122. The first housing 121 and the second housing 122 are detachably connected through the first connecting member and the second connecting member, so that the first mounting groove 1211 and the second mounting groove 1221 cooperate to form a connecting groove 123, and at least one of the first mounting groove 1211 and the second mounting groove 1221 is provided with a second guiding surface 124.

[0038] Based on this structure, the connecting seat 12 in this embodiment is composed of a first housing 121 and a second housing 122, and the first housing 121 and the second housing 122 are respectively detachably connected through a first connecting member and a second connecting member, so that the second housing 122 is detachable relative to the first housing 121. In addition, since a first mounting groove 1211 and a second mounting groove 1221 are respectively provided on the first housing 121 and the second housing 122, the first mounting groove 1211 and the second mounting groove 1221 can be combined to form a connecting groove 123 after the first housing 121 and the second housing 122 are connected.

[0039] During specific assembly, the connector 20 can be embedded into the first mounting groove 1211, and then the second housing 122 is covered on the first housing 121 and locked through the first connecting member and the second connecting member. At this time, the connector 20 is tightly fitted with the connecting groove 123 under the cooperation of the first guiding surface 21 and the second guiding surface 124. Compared with integrally forming the connecting groove 123 on the connecting seat 12, the connecting method formed by the first housing 121 and the second housing 122 that can be disassembled up and down makes it easier to separate and recombine the connecting seat 12 when maintenance, component replacement or adjustment is required.

[0040] It should be noted that the second guiding surface 124 can be set to two or more according to the position and number of the first guiding surfaces 21 on the connector 20, and is formed in the first mounting groove 1211 or the second mounting groove 1221 according to the position of the first guiding surface 21. Of course, while multiple first guiding surfaces 21 are provided, multiple second guiding surfaces 124 can also be formed in the first mounting groove 1211 and the second mounting groove 1221 at the same time, so that the connector 20 can be tightly fitted with the connecting groove 123 through the guidance of the second guiding surface 124 in multiple directions, making the connector 20 more stable after assembly.

[0041] As a preferred solution, in this embodiment, both the connector 20 and the connecting groove 123 are frustum-shaped, the first guiding surface is the outer peripheral surface of the connector 20, and the second guiding surface 124 is the side wall of the connecting groove 123.

[0042] On this basis, since both the connector 20 and the connection groove 123 are frustum-shaped, thus, both the outer peripheral surface of the connector and the side wall of the connection groove have a certain taper, that is, both the first guiding surface 21 and the second guiding surface 124 have a certain taper. Therefore, after the connector 20 is inserted into the connection groove 123, due to the existence of the taper, it can ensure higher assembly accuracy between the connector 20 and the connection groove 123. Even if there are slight deviations, they can be compensated by adjusting the taper, so as to achieve a closer fit.

[0043] In contrast, due to the inclined surface design, during assembly, if there are large deviations, it may lead to difficult assembly or gaps after assembly, thus affecting the tightness and sealing performance of the connection. If the connector 20 is inserted into the connection groove 123 with an inclined surface through the guidance of the inclined surface, more operation steps and skills may be required, increasing the installation difficulty and time cost.

[0044] In addition, in actual applications, the connector 20 or the connection seat 12 may be worn after long-term use. If the first guiding surface 21 and the second guiding surface 123 are flat surfaces, when the connector 20 and the connection groove 123 are assembled, due to the fixed contact area of the flat surface, once worn, the contact area will decrease, resulting in loose assembly. And after the flat surface is worn, its surface flatness will be affected, which may lead to gaps or unevenness during assembly, further exacerbating the loosening phenomenon;

[0045] Therefore, in this embodiment, both the connector 20 and the connection groove 123 are designed as frustum-shaped, so that the first guiding surface 21 and the second guiding surface 123 have a certain taper. In this way, when the first guiding surface 21 and the second guiding surface 123 are worn, due to the existence of the taper, the contact surfaces of the first guiding surface 21 and the second guiding surface 123 will form a gradually transitional contact area, rather than concentrating on the edge. This contact method helps to disperse stress and reduce local wear, which means that even if there is a certain amount of wear, the main parts of the first guiding surface 21 and the second guiding surface 123 can still maintain contact and maintain sufficient assembly tightness, thereby improving the overall wear resistance and service life.

[0046] It should be noted that the first connecting member and the second connecting member can be detachably connected by means of threaded connection, snap and slot 1212 connection, pin connection or the like.

[0047] Furthermore, a slot 1212 is provided on the first housing 121, and a connecting arm 1222 is provided on the second housing 122. Specifically, the connecting arm 1222 is formed as the second connecting member, and the connecting arm 1222 is hinged into the slot 1212, so that the second housing 122 is rotatably connected to the first housing 121 and can rotate under force to open or close the first installation groove 1211.

[0048] Specifically, a connecting arm 1222 is provided on the second housing 122 and formed as a second connecting member. A clamping groove 1212 is provided on the first housing 121. The connecting arm 1222 is formed as a first connecting member through a connecting member such as a hinge, a hinge or a rotating shaft and is hinged into the clamping groove 1212, so that the second housing 122 can rotate when stressed to cover or open the first installation groove 1211. When the internal parts are worn and need to be replaced, the first installation groove 1211 can be opened at any time for easy maintenance. Compared with the disassembly connection methods such as screw connection or pin connection, the rotational connection usually only needs to rotate to complete the connection or disassembly, without using specific tools or wrenches, so the operation is more convenient and the later maintenance is more convenient.

[0049] In addition, first through holes 1213 are provided on both sides of the clamping groove 1212, and second through holes 1223 are provided on both sides of the connecting arm 1222. By passing a rotating shaft through the first through hole 1213, at this time, the rotating shaft is formed as a first connecting member. During assembly, the rotating shaft can be sequentially passed through the first through hole 1213 and the second through hole 1223 after the connecting arm 1222 is clamped into the clamping groove 1212 to realize the rotational connection between the second housing 122 and the first housing 121.

[0050] More specifically, in this embodiment, the connecting seat 12 further includes a locking member. Specifically, the locking member can sequentially pass through the second housing 122 and the end of the first housing 121 away from the connecting arm 1222 after the second housing 122 is connected to the first housing 121, so that the entire structure is in a locked state after the first housing 121 and the second housing 122 are assembled, making it difficult for the bracket 10 and the external device to loosen after being connected, and the structure is more stable.

[0051] The specific locking member can be an existing bolt, screw, pin or other rod-shaped connecting member.

[0052] Furthermore, the locking member includes a locking rod 11. By providing a third through hole 1214 on the first housing 121 and a fourth through hole 1224 on the second housing 122, and corresponding the fourth through hole 1224 with the third through hole 1214, during assembly, the locking rod 11 can be sequentially passed through the fourth through hole 1224 and the third through hole 1214 to lock the end of the first housing 121 and the second housing 122 away from the connecting arm 1222 through the locking rod 11, so that the entire structure can be in a locked state.

[0053] It should be noted that the locking rod 11 can be a threaded rod, a lead screw or other rod-shaped structures. When the locking rod 11 is a threaded rod or a lead screw, the third through-hole 1214 and the fourth through-hole 1224 can both be set as threaded holes, so that after the locking rod 11 is inserted, it is in threaded fit with the third through-hole 1214 and the second through-hole 1223 to lock the second housing 122 and the first housing 121. When it is necessary to separate the second housing 122 from the first housing 121, only need to rotate and screw out the locking rod 11 to the third through-hole 1214 and the fourth through-hole 1224, and then apply an external force to the second housing 122 to make it rotate to open the first installation groove 1211, which is convenient to operate.

[0054] When the locking rod 11 is a common connecting rod structure, after it is sequentially inserted into the third through-hole 1214 and the fourth through-hole 1224, both ends of it can be locked by bolts or other fasteners respectively to prevent looseness up and down and affect the structural stability.

[0055] Preferably, the locking rod 11 in this embodiment is a threaded rod, and both the third through-hole 1214 and the fourth through-hole 1224 are threaded holes, and the threaded rod is in threaded fit with the threaded holes.

[0056] Specifically, if the connection method of using a common rod-shaped structure (such as a connecting rod) and the through-hole to lock the connection between the first housing 121 and the second housing 122, the connection and locking method between the connecting rod and the through-hole may require additional accessories to lock both ends of the connecting rod to achieve locking, which is relatively cumbersome, and the locking method between the connecting rod and the through-hole may be more easily affected by external factors, resulting in looseness or failure. Therefore, in this embodiment, the cooperation of the threaded rod and the threaded hole is adopted. Since the threaded rod and the threaded hole are locked by the engagement of the threads, this connection method has high stability and safety. The engagement of the threads can provide a large frictional force to effectively prevent looseness caused by vibration or other reasons.

[0057] More specifically, in order to facilitate holding the locking rod 11 and make it easier to operate during assembly, a handle 111 is also provided on the locking rod 11. Specifically, the handle 111 is provided at one end of the locking rod 11 far from the second housing 122 to increase the contact area at the end of the locking rod 11 through the handle 111, facilitating the operator to hold the locking rod 11.

[0058] Embodiment 2

[0059] Refer to Figures 1 to 4 , a photographic lamp, including a lamp body and the anti-loosening connection device in Embodiment 1. Specifically, the lamp body includes a lamp housing 30, and the lamp housing 30 is connected to the connection head 20.

[0060] When fixing the lamp body with the bracket 10 currently used in the market, generally, connecting pieces are respectively arranged on the lamp body and the bracket 10, and then the front planes of the two connecting pieces are pressed against each other. Through the frictional force of the contact plane, the lamp body and the bracket 10 are relatively fixed. However, when the lamp body is heavy and the lever arm is long, under the action of an additional external force, the frictional force of the contact surface is likely to be unable to overcome the external force moment, resulting in relative rotation between the lamp body and the bracket 10 and affecting the light output position.

[0061] Therefore, when using the photographic lamp in this embodiment, the lamp housing 30 of the lamp body can be connected to the connector 20, and then the connector 20 is inserted into the connection groove 123 on the connection seat 12, so that the lamp body and the bracket 10 are assembled. Since the first guiding surface 21 and the second guiding surface 124 are respectively arranged on the connector 20 and the inner wall of the connection groove 123, the connector 20 can smoothly slide into the connection groove 123 and be tightly fitted under the guidance of the first guiding surface 21 and the second guiding surface 124, and the assembly is convenient;

[0062] Moreover, since the first guiding surface 21 and the second guiding surface 124 adopt the design of a conical surface or an inclined surface, even if the device connected to the connector 20 is heavy or has a long lever arm, due to the self-locking effect of the conical surface or inclined surface design, the connector 20 is still firmly fixed and not easily loosened when subjected to an external force, ensuring the tightness of the connection, so that the entire lamp body is not easily loosened during use and is not likely to affect the light output position due to relative rotation between the lamp body and the bracket 10, and the structure is more stable.

[0063] It should be noted that the lamp housing 30 and the connector 20 can be detachably connected by connecting pieces such as screws or bolts, so that the connector 20 can be applicable to more lamp bodies in specific applications and has a wider application range; similarly, the connection seat 12 can also be detachably connected to the bracket 10 by connecting pieces such as screws or bolts. In this way, if the specification size of the lamp body changes, different brackets 10 can be correspondingly replaced to connect with the connection seat 12, making the application range of the entire device wider.

[0064] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A connection device for preventing loosening, characterized in that, The invention comprises a connecting head (20) and a bracket (10), wherein the bracket (10) is provided with a connecting seat (12), the connecting head (20) is provided with a first guiding surface (21), the connecting seat (12) is provided with a connecting groove (123), the inner wall of the connecting groove (123) is provided with a second guiding surface (124), the second guiding surface (124) is slidably matched with the first guiding surface (21), and is used to guide the connecting head (20) to slide into the connecting groove (123), so that the connecting head (20) and the connecting groove (123) are tightly matched.

2. The anti-loosening connection device according to claim 1, characterized in that, The connecting seat (12) comprises a first shell (121) and a second shell (122); the first shell (121) is provided with a first mounting groove (1211), the second shell (122) is provided with a second mounting groove (1221); the first shell (121) is provided with a first connecting member, the second shell (122) is provided with a second connecting member; the first shell (121) and the second shell (122) are detachably connected via the first connecting member and the second connecting member, so that the first mounting groove (1211) cooperates with the second mounting groove (1221) to form the connecting groove (123); at least one of the first mounting groove (1211) and the second mounting groove (1221) is provided with the second guiding surface (124).

3. The anti-loosening connection device according to claim 2, wherein, The connecting head (20) and the connecting groove (123) are both truncated cone-shaped, the first guide surface (21) is the outer peripheral surface of the connecting head (20), and the second guide surface (124) is the side wall of the connecting groove (123).

4. The anti-loosening connection device according to claim 2, characterized in that, The first shell (121) is provided with a card slot (1212), and the second shell (122) is provided with a connecting arm (1222), and the connecting arm (1222) is the second connecting member. The connecting arm (1222) is hinged to the card slot (1212) so that the second shell (122) is rotatably connected to the first shell (121), and is used to cover or open the first installation slot (1211) when rotating under force.

5. The anti-loosening connection device according to claim 4, characterized in that, A first through hole (1213) is provided on both sides of the card slot (1212), and a second through hole (1223) is provided on both sides of the connecting arm (1222). A rotating shaft is passed through the first through hole (1213), and the rotating shaft is the first connecting member; the rotating shaft is sequentially passed through the first through hole (1213) and the second through hole (1223) so that the second shell (122) is rotatably connected to the first shell (121).

6. The anti-loosening connection device according to claim 5, characterized in that, The connecting seat (12) further comprises a locking member, which passes through the second shell (122) and the first shell (121) in sequence to lock the connecting seat (12).

7. The anti-loosening connection device according to claim 6, characterized in that, The locking member includes a locking rod (11). A third through hole (1214) is provided on the first housing (121), and a fourth through hole (1224) is provided on the second housing (122). The fourth through hole (1224) is correspondingly arranged with the third through hole (1214), and the locking rod (11) is sequentially inserted into the fourth through hole (1224) and the third through hole (1214).

8. The anti-loosening connection device according to claim 7, wherein, The locking rod (11) is a threaded rod. Both the third through hole (1214) and the fourth through hole (1224) are threaded holes, and the threaded rod is in threaded fit with the threaded holes.

9. The anti-loosening connection device according to claim 7, characterized in that, A handle (111) is further provided on the locking rod (11), and the handle (111) is arranged at one end of the locking rod (11) away from the second housing (122).

10. A photographic lamp, characterized in that, It includes a lamp body and the anti-loosening connecting device according to any one of claims 1-9. The lamp body includes a lamp housing (30), and the lamp housing (30) is connected to the connecting head (20).

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