Fastening device, junction box and compressor

Abstract

The utility model provides a fastening device, junction box and compressor wherein the fastening device comprises: a plurality of wire clamping parts, each wire clamping part has mutually connected connecting ends and conductive clamping jaws that can be opened and closed, the connecting ends are connected with an external power line, the conductive clamping jaws clamp a motor outgoing line fixing assembly, the motor outgoing line fixing assembly is connected with the connecting ends, and the motor outgoing line fixing assembly is connected with the conductive clamping jaws. The wire fixing assembly comprises an insulating cover and a fixing part; a plurality of accommodating holes are formed in the inner side of the insulating cover; the conductive clamping jaw in each wire clamping part is arranged in the corresponding containing hole in a penetrating mode and can move relative to the containing hole, and the fixing part is used for fastening the motor leading-out wire clamped by the conductive clamping jaw. According to the utility model, not only is a good electrical safety distance ensured, but also wiring can be completed in a very small space, and meanwhile, the sealing requirement is met so as to prevent external moisture and dust from entering the wiring cavity along with the cable.

Description

Technical Field

[0001] The utility model belongs to the field of compressors, and more specifically, relates to a fastening device, a junction box and a compressor. Background Art

[0002] The motor of a traditional compressor is connected to a terminal in the junction box through a lead wire, and the motor of the compressor is powered by connecting the terminal in the junction box to an external power supply. However, this wiring method of the traditional compressor has potential hazards such as high requirements for the size of the wiring cavity and uncontrollable creepage distance. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a fastening device, a junction box and a compressor to solve the problems of high requirements for the size of the wiring cavity and uncontrollable creepage distance existing in the wiring method of the traditional compressor.

[0004] To achieve the above object, the technical solution adopted by the utility model is:

[0005] The utility model provides a fastening device, including:

[0006] A plurality of wire clamping components, each of the wire clamping components having a connecting end connected to each other and an openable and closable conductive clamping jaw, the connecting end being connected to an external power supply wire, and the conductive clamping jaw clamping the motor lead wire;

[0007] A wire fixing assembly, the wire fixing assembly including an insulating cover and a fixing member, and a plurality of receiving holes being provided inside the insulating cover;

[0008] Wherein, in each of the wire clamping components, the conductive clamping jaw is inserted into a corresponding receiving hole and the conductive clamping jaw can move relative to the receiving hole, and the fixing member is used for fastening the motor lead wire clamped by the conductive clamping jaw.

[0009] Further, the fixing member includes a stepping motor provided outside the insulating cover and a fixing rope wound around the conductive clamping jaws in a plurality of the wire clamping components; when the output shaft of the stepping motor rotates, the fixing rope is tightened.

[0010] Further, each of the conductive clamping jaws includes two elastic clamping pieces, and a clamping hole for receiving the motor lead wire is formed in the center by the two elastic clamping pieces.

[0011] Further, a detection sensor is provided on each of the elastic clamping pieces.

[0012] Further, the detection sensor is a pressure detection sensor.

[0013] Further, the detection sensor is a deformation detection sensor.

[0014] Further, the cross-sectional shape of each of the receiving holes is conical, and the small end of the receiving hole is close to the connection end in the corresponding wire clamping member.

[0015] Further, each wire clamping member is provided with an anti-misassembly mark.

[0016] The present utility model further provides a junction box, including: a box body, a box cover, and the fastening device as described above; the box cover is disposed at the open end of the box body, and the fastening device is disposed on the cavity wall of the box body.

[0017] The present utility model further provides a compressor, including a compressor housing, a wiring board, and the junction box as described above. The compressor housing and the junction box are disposed on both sides of the wiring board. Multiple motor lead wires inside the compressor housing sequentially pass through the compressor housing and the wiring board and are clamped by the corresponding conductive clamping claws.

[0018] The beneficial effects of the fastening device, the junction box, and the compressor provided by the present utility model are as follows: Compared with the prior art, the present utility model adopts the method of disposing the fastening device on the cavity wall of the junction box. Meanwhile, the fastening device is provided with a wire clamping member, an insulating cover, and a fixing member. By connecting an external power supply wire to the connection end of the wire clamping member and inserting the motor lead wire into the conductive clamping claw of the wire clamping member, power supply to the motor is achieved. At the same time, the conductive clamping claw is disposed inside the receiving hole of the insulating cover, and the fixing member fastens the motor lead wire clamped by the conductive clamping claw, which not only ensures a good electrical safety distance but also can complete wiring in a very small space, and at the same time meets the sealing requirement to prevent external moisture and dust from entering the wiring cavity along with the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the wiring method of a compressor in the prior art;

[0021] Figure 2 It is a schematic diagram of the wiring method of a compressor provided by a preferred embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the fastening device provided by a preferred embodiment of the present utility model;

[0023] Figure 4Cross-sectional schematic diagram of the fastening device provided by the preferred embodiment of the present utility model;

[0024] Among them, the main reference signs of each drawing in the figure are:

[0025] 11, terminal board; 12, compressor housing; 13, junction box; 14, terminal post;

[0026] 221, connection end; 223, conductive jaw; 2231, elastic clip;

[0027] 22, insulating cover; 23, fixing member; 231, stepping motor; 232, fixing rope;

[0028] 24, detection sensor;

[0029] 31, motor lead wire; 32, external power supply wire. Specific embodiments

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] Please refer to Figure 1 , the compressor includes a terminal board 11, a compressor housing 12 and a junction box 13 respectively arranged on the upper and lower sides of the terminal board 11. The terminal post 14 is vertically penetrated through the terminal board 11. At this time, the upper end of the terminal post 14 is placed in the cavity of the junction box 13, and the lower end of the terminal post 14 is placed in the compressor housing 12. The wiring method of the traditional compressor is: the motor lead wire 31 inside the compressor housing 12 is connected to the lower end of the terminal post 14, and the external power supply wire 32 penetrates into the cavity of the junction box 13 from the outside of the junction box 13 and is connected to the upper end of the terminal post 14, so as to supply power to the motor of the compressor. This wiring method of the traditional compressor requires removing the cover of the junction box 13, and then locking the cable on the terminal post 14 through the terminal and the nut. This wiring operation is inconvenient and easy to connect wrongly; moreover, if the cable is relatively thick, according to the electrical safety requirements, it is necessary to keep a sufficient safety distance between the terminal posts 14, which requires a large internal space of the junction box 13; moreover, when the cable passes through the junction box 13, if the cable is not locked, it is easy to cause water and dust in the air to enter the junction box 13.

[0032] Based on this, the present utility model proposes a fastening device, a junction box and a compressor.

[0033] Please refer to Figure 2 , the fastening device provided by the preferred embodiment of the present utility model includes:

[0034] Multiple wire clamping components, each wire clamping component having a connected end 221 and an openable and closable conductive jaw 223, the connected end 221 being connected to an external power cord 32, and the conductive jaw 223 clamping the motor lead wire 31;

[0035] A wire fixing assembly, the wire fixing assembly including an insulating cover 22 and a fixing component 23, with a plurality of receiving holes provided inside the insulating cover 22;

[0036] Wherein, in each wire clamping component, the conductive jaw 223 is inserted into a corresponding receiving hole and the conductive jaw 223 is movable relative to the receiving hole, and the fixing component 23 is used to fasten the motor lead wire 31 clamped by the conductive jaw 223.

[0037] In the fastening device provided by this preferred embodiment, there are wire clamping components and a fixing assembly. By connecting the external power cord 32 to the connected end 221 of the wire clamping component and inserting the motor lead wire 31 into the conductive jaw 223 of the wire clamping component, power supply to the motor is achieved. At the same time, the conductive jaw 223 is inserted into the receiving hole inside the insulating cover 22, and the fixing component 23 fastens the motor lead wire 31 clamped by the conductive jaw 223, not only ensuring a good electrical safety distance, but also enabling wiring to be completed in a very small space, while meeting the sealing requirements to prevent external moisture and dust from entering the wiring cavity along the wires.

[0038] It should be understood that the opening angle of the conductive jaw 223 is adjustable. By pushing the conductive jaw 223 to cause relative movement between it and the corresponding receiving hole, the opening angle of the conductive jaw 223 can be adjusted. In practical applications, the conductive jaw 223 can be manually pushed to move, or a moving drive component can be added to automatically drive the conductive jaw 223 to move.

[0039] During the process of connecting the motor lead wire 31 to the corresponding wire clamping component, the conductive jaw 223 can be first pushed out to the outside of the insulating cover 22 to make the opening angle of the conductive jaw 223 larger. Then, the insulating layer of the motor lead wire 31 to be connected is stripped of an appropriate length and inserted into the conductive jaw 223. After all the motor lead wires 31 are connected to the corresponding wire clamping components, all the conductive jaws 223 are then retracted to the inside of the insulating cover 22. At this time, as the opening angle of the conductive jaw 223 becomes smaller, the motor lead wire 31 is continuously clamped by the conductive jaw 223, and finally the motor lead wire 31 follows the conductive jaw 223 into the inside of the insulating cover 22. Since the insulating cover 22 is made of insulating material and different motor lead wires 31 are placed in different receiving holes of the insulating cover 22, the electrical clearance and creepage distance are ensured.

[0040] The insulating cover 22 can be made of insulating materials such as melamine to ensure reliable insulation; the conductive clamping jaws 223 can be made of materials with good elasticity and conductivity, such as copper alloy, to ensure that the conductive clamping jaws 223 have a certain opening angle in the natural state, and at the same time, there is good electrical contact between the cable and the conductive clamping jaws 223.

[0041] In a preferred embodiment, the fixing member 23 includes a stepping motor 231 disposed outside the insulating cover 22 and a fixing rope 232 wound around the conductive clamping jaws 223 in a plurality of wire clamping members. When the output shaft of the stepping motor 231 rotates, the fixing rope 232 is tightened.

[0042] By rotating the stepping motor 231, the fixing rope 232 in the fixing member 23 is tightened, so that the pressure on the motor lead 31 is increased. In this way, the fixing member 23 provides a reliable clamping force to the motor lead 31 to help with reliable wiring.

[0043] In a preferred embodiment, as Figure 2 、 Figure 3 shown, each conductive clamping jaw 223 includes two elastic clamping pieces 2231, and a clamping hole for accommodating the motor lead 31 is formed in the center by the two elastic clamping pieces 2231.

[0044] The elastic clamping pieces 2231 can be made of copper alloy, which has both good elasticity and good conductivity. When the conductive clamping jaws 223 are in the natural state, the two elastic clamping pieces 2231 are separated from each other, so that the conductive clamping jaws 223 have a certain opening angle, thus facilitating the insertion of the motor lead 31 into the clamping hole formed by the two elastic clamping pieces 2231 and greatly reducing the operation difficulty during wiring.

[0045] Of course, in other embodiments, the number of elastic clamping pieces 2231 in each conductive clamping jaw 223 can be flexibly set according to actual needs. For example, if the motor lead 31 is relatively thick, each conductive clamping jaw 223 can be set to be composed of five elastic clamping pieces 2231.

[0046] In a preferred embodiment, as Figure 3 、 Figure 4 shown, a detection sensor 24 is provided on each elastic clamping piece 2231.

[0047] It can be understood that the fastening device further includes a controller, which can receive the detection data from each detection sensor 24 and analyze the fastening degree of each motor lead 31 based on the detection data. If it is determined that the fastening degree of a motor lead 31 is insufficient, the stepping motor 231 is controlled to rotate, so that the fixing rope 232 in the fixing member 23 is tightened, and thus a reliable fastening pressure is applied to the motor lead 31.

[0048] The detection sensor 24 can be a pressure detection sensor or a deformation detection sensor.

[0049] If a pressure detection sensor is adopted, the pressure received by the motor lead wire 31 can be detected. When the pressure received by the motor lead wire 31 is detected to be less than 40 N, the stepping motor 231 is controlled to rotate, so that the fixing rope 232 in the fixing member 23 is tightened, thereby increasing the pressure received by the motor lead wire 31 until it reaches 40 N.

[0050] If a deformation detection sensor is adopted, the amount of deformation on the surface of the motor lead wire 31 can be detected, and the amount of deformation on the surface of the motor lead wire 31 is in a proportional relationship with the tightening amount of the motor lead wire 31. When the amount of deformation on the surface of the motor lead wire 31 detected reaches the preset deformation threshold, it is determined that the motor lead wire 31 has been tightly fastened, and then the stepping motor 231 can be controlled to stop rotating.

[0051] In the preferred embodiment, the cross-sectional shape of each receiving hole is conical, and the small end of the receiving hole is close to the connection end 221 in the corresponding wire clamping member.

[0052] The receiving hole in the insulating cover 22 is set as a conical hole, that is, the receiving hole has a small end and a large end. Then, when the conductive clamping jaw 223 retracts into the corresponding receiving hole, as the diameter of the receiving hole continuously becomes smaller, the opening angle of the conductive clamping jaw 223 quickly becomes smaller, and the effect of strengthening the fastening of the motor lead wire 31 can also be achieved.

[0053] In the preferred embodiment, each wire clamping member is provided with an anti-fooling mark.

[0054] The anti-fooling mark is marked with the serial number of the motor lead wire 31, such as W, U, V, etc. In this way, each motor lead wire 31 can be effectively identified, which is beneficial to improving the wiring accuracy rate and effectively preventing mistakes.

[0055] Please refer to Figure 2 , the junction box 13 provided by the preferred embodiment of the present utility model includes: a box body, a box cover, and a fastening device. The box body has a wiring cavity, the wiring cavity is provided with an open end, the box cover is arranged at the open end of the box body, and the fastening device is arranged on the cavity wall of the box body.

[0056] It should be understood that the specific structure of the fastening device has been described in detail above and will not be elaborated here. The box body and the box cover can be made of insulating materials, such as insulating materials with high reliability like melamine. The junction box 13 has the function of explosion protection.

[0057] In the junction box 13 provided in this preferred embodiment, a fastening device is provided to connect the external power supply line 32 and clamp the motor lead wire 31, and fasten the motor lead wire 31. This wiring method can ensure a good electrical safety distance, and at the same time can complete the wiring in a very small space, so the space requirement for the wiring cavity in the junction box 13 is small, and at the same time, the sealing requirement of the junction box 13 is met to prevent external moisture and dust from entering the wiring cavity along with the wires.

[0058] Please refer to Figure 2 , the compressor provided by the preferred embodiment of the present utility model includes: a compressor housing 12, a wiring board 11, and a junction box 13.

[0059] Among them, the specific structure of the junction box 13 has been described in detail above and will not be elaborated here.

[0060] The compressor housing 12 and the junction box 13 are arranged on both sides of the wiring board 11. Multiple motor lead wires 31 inside the compressor housing 12 sequentially pass through the compressor housing 12 and the wiring board 11 and are clamped by corresponding conductive jaws 223.

[0061] At the same time, to meet the sealing requirement, when the motor lead wire 31 passes through the wiring board 11, it is directly sealed with epoxy resin glue.

[0062] In the compressor provided by this preferred embodiment, since a fastening device is provided in the junction box 13 and the terminal post 14 is omitted, this wiring method can ensure that the electrical clearance and creepage distance are guaranteed.

[0063] For better understanding, the following description will be given by taking an example where there are three wire clamping components in the fastening device:

[0064] A wiring board 11 is arranged between the compressor housing 12 and the junction box 13. The junction box 13 is fixed on the compressor housing 12 through fastening bolts. At the same time, the wiring board 11 is fixed on the junction box 13 through fastening bolts.

[0065] The junction box 13 has a wiring cavity, and the fastening device is arranged on the cavity wall of the wiring cavity. Three motor lead wires 31 inside the compressor housing 12 pass through the wiring board 11 and enter the wiring cavity, and each motor lead wire 31 is sealed with the wiring board 11 by epoxy resin glue to prevent moisture and dust from entering the wiring cavity.

[0066] The fastening device includes three wire clamping components, a wire fixing assembly, and a controller.

[0067] Each wire clamping component includes a connection end 221 for connecting to an external power cord 32 and a conductive clamping jaw 223 for clamping the motor lead wire 31. The conductive clamping jaw 223 is composed of two elastic clamping pieces 2231, and the two elastic clamping pieces 2231 form a clamping hole in the center for accommodating the motor lead wire 31. A deformation detection sensor is provided on each elastic clamping piece 2231.

[0068] The wire fixing assembly includes an insulating cover 22 and a fixing component 23. Three accommodating holes are provided in the insulating cover 22, and the cross-sectional shape of each accommodating hole is conical. The fixing component 23 includes a stepping motor 231 provided on the outer side of the insulating cover 22 and a fixing rope 232 provided on the inner side of the insulating cover 22. The fixing rope 232 is wound around the outer sides of the three conductive clamping jaws 223 in a form similar to a wire harness structure.

[0069] The controller is electrically connected to the deformation detection sensor. The controller analyzes the tightening degree of each motor lead wire 31 according to the deformation data detected by each deformation detection sensor, and when the tightening amount of the motor lead wire 31 is insufficient, controls the stepping motor 231 to rotate to make the fixing rope 232 tighter until the tightening amount of each motor lead wire 31 meets the standard. At the same time, regardless of the diameter of the motor lead wire 31 being large or small, a reliable clamping force will be provided to the motor lead wire 31 to ensure reliable wiring, and a wide range of wire diameters can be made universal.

[0070] Compared with the prior art, the beneficial effects of the fastening device, junction box and compressor provided by the present utility model are as follows: The present utility model not only ensures a good electrical safety distance, but also can complete wiring in a very small space, and at the same time meets the sealing requirements to prevent external moisture and dust from entering the wiring cavity along with the cable.

[0071] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fastening device, characterized in that: include: A plurality of wire clamping components, each of which has mutually connected connection ends and an openable and closable conductive clamping claw, the connection end is connected to an external power line, and the conductive clamping claw clamps the motor lead wire; A wire fixing assembly, the wire fixing assembly comprising an insulating cover and a fixing component, wherein a plurality of accommodating holes are provided inside the insulating cover; Wherein, the conductive clamping claw in each of the clamping components is inserted into the corresponding receiving hole and the conductive clamping claw can move relative to the receiving hole, and the fixing component is used to fasten the motor lead wire clamped by the conductive clamping claw.

2. The fastening device according to claim 1, characterized in that The fixing component comprises a stepping motor arranged outside the insulating cover, and a fixing rope wound around the conductive clamping claws in the plurality of clamping components; the fixing rope is tightened when the output shaft of the stepping motor rotates.

3. The fastening device according to claim 1, characterized in that: Each of the conductive clamping claws comprises two elastic clamping pieces, and the two elastic clamping pieces form a clamping hole in the center to accommodate the motor lead wire.

4. The fastening device according to claim 3, characterized in that: Each of the elastic clips is provided with a detection sensor.

5. The fastening device according to claim 4, characterized in that: The detection sensor is a pressure detection sensor.

6. The fastening device according to claim 4, characterized in that The detection sensor is a deformation detection sensor.

7. The fastening device according to claim 1, characterized in that: The cross-section of each accommodating hole is conical, and the small end of the accommodating hole is close to the corresponding connecting end of the wire clamping component.

8. The fastening device according to claim 1, characterized in that Each wire clamping component is provided with an anti-fool mark.

9. A junction box, characterized in that: include: A box body, a box cover, and a fastening device as described in any one of claims 1 to 8; The box cover is arranged at the open end of the box body, and the fastening device is arranged on the cavity wall of the box body.

10. A compressor, characterized in that It comprises a compressor housing, a terminal block and a terminal box as claimed in claim 9, wherein the compressor housing and the terminal box are arranged on both sides of the terminal block, and a plurality of motor lead wires on the inner side of the compressor housing are sequentially passed through the compressor housing and the terminal block and clamped by the corresponding conductive clamps.

Images