A terminal and an air-conditioning compressor motor protector including the terminal

Abstract

The present application provides a terminal and an air conditioner compressor motor protector including the terminal. The terminal includes a fixed column and a movable column, wherein the fixed column is made of metal; the movable column includes a wire pressing rod and a fastening rod, wherein one end of the wire pressing rod is fixedly connected to one end of the fastening rod, the diameter of the wire pressing rod is larger than the diameter of the fastening rod, and a winding groove is provided on the outer surface of the end of the fastening rod near the wire pressing rod, the wire pressing rod is made of plastic material, and the fastening rod is made of metal material; one end of the fixed column is provided with a wire pressing hole, and the bottom surface of the wire pressing hole is provided with a fastening hole, and the diameter of the fastening hole is smaller than the diameter of the wire pressing hole; the end of the fastening rod away from the wire pressing rod is threadedly connected to the fastening hole, and the end of the wire pressing rod near the fastening rod is plugged into the wire pressing hole; and a first notch is provided on the inner side of the wire pressing hole. The present application solves the problem in the prior art that the wire ends of the wires are easily damaged after being connected to the terminal.

Description

Technical Field

[0001] The present application relates to the technical field of terminal blocks, and in particular to a terminal block and an air-conditioning compressor motor protector including the terminal block. Background Art

[0002] A terminal is a device used to fix the end of an electric wire and achieve electrical connection. It is usually used in devices such as electric meters, surge protectors, switches, PLC controllers, etc. The terminal on the air-conditioning compressor motor protector in the prior art is usually composed of a base and a screw. The screw is threadedly connected to one side of the base, one end of the screw extends into the interior of the base, and the other end of the screw is exposed outside the base. A socket is provided on the other side of the base, and the socket is connected to the internal space of the base. The opening of the socket is perpendicular to the screw. During the wiring process, the wire end is inserted into the interior of the base from the socket, and the screw is tightened. The screw presses the wire end against the inner wall of the base. The base is made of metal material, and the base is electrically connected to the internal circuit of the protector through a metal sheet or wire.

[0003] However, when tightening the screw, the end face of the bolt presses against the wire head. Due to the different rotational linear speeds at different diameters of the end face of the screw, different diameters of the end face of the screw generate different pulling forces on the wire head under the action of friction. The farther the position is from the center axis of the screw, the greater the pulling force generated on the wire head. This can easily cause the wire head to deform irregularly or crack due to uneven force, damage the wire head, and affect the connection tightness between the wire and the terminal, as well as the conductivity between the wire and the terminal. In addition, the metal surface at the connection between the screw and the base is exposed to the air, reducing the safety factor. Summary of the Invention

[0004] The present application provides a terminal and an air-conditioning compressor motor protector including the terminal, which are used to solve the problem in the prior art that the wire ends of the wires are easily damaged after being connected to the terminal.

[0005] To achieve the above objectives, the embodiments of the present application propose the following technical solutions:

[0006] In a first aspect of the present application, a terminal post is provided, comprising a fixed column and a movable column, wherein the fixed column is made of a metal material;

[0007] The movable column includes a wire pressing rod and a fastening rod, one end of the wire pressing rod is fixedly connected to one end of the fastening rod, the diameter of the wire pressing rod is larger than the diameter of the fastening rod, the central axis of the wire pressing rod and the central axis of the fastening rod are located on the same straight line, and a winding groove is provided on the outer surface of the fastening rod near the end of the wire pressing rod, the wire pressing rod is made of plastic material, and the fastening rod is made of metal material;

[0008] A wire pressing hole is provided at one end of the fixing column, a fastening hole is provided on the bottom surface of the wire pressing hole, the central axis of the fastening hole is on the same straight line as the central axis of the wire pressing hole, and the diameter of the fastening hole is smaller than the diameter of the wire pressing hole;

[0009] One end of the fastening rod away from the wire pressing rod is threadedly connected to the fastening hole, and one end of the wire pressing rod close to the fastening rod is plugged into the wire pressing hole, and the outer side surface of the wire pressing rod is tightly matched with the inner side surface of the wire pressing hole;

[0010] A first notch is provided on the inner side surface of the wire pressing hole, the first notch penetrates the side surface of one side of the wire pressing hole along the radial direction of the wire pressing hole, the first notch is arranged along the axial direction of the wire pressing hole, one end of the first notch penetrates the end surface of the fixing column close to the end of the wire pressing rod, and the other end of the first notch is aligned with the end surface of the fastening hole close to the end of the wire pressing rod along the radial direction of the wire pressing hole;

[0011] A distance between an end surface of the fastening rod away from the wire pressing rod and the wire pressing rod is less than or equal to an axial length of the fastening hole.

[0012] In some embodiments of the first aspect, a knob is integrally connected to one end of the wire-pressing rod away from the fastening rod, the knob is disc-shaped, the central axis of the knob is located on the same straight line as the central axis of the wire-pressing rod, the diameter of the knob is larger than the diameter of the end of the fixed column close to the wire-pressing rod, and a plurality of anti-slip grooves are provided on the side of the knob, the anti-slip grooves pass through the end faces of both ends of the knob along the axial direction of the knob, and the anti-slip grooves are distributed in an equiangular circular array around the central axis of the knob.

[0013] In some embodiments of the first aspect, the terminal further comprises an elastic sleeve, which is sleeved on the wire-pressing rod, and the elastic sleeve is located between the fixed column and the knob, the inner side surface of the elastic sleeve is tightly fitted with the side surface of the wire-pressing rod, the end surface of the elastic sleeve close to the knob is tightly fitted with the end surface of the knob, the end surface of the elastic sleeve close to the fixed column is tightly fitted with the end surface of the fixed column, the diameter of the outer side surface of the elastic sleeve is equal to the diameter of the outer side surface of the fixed column close to the wire-pressing rod, the elastic sleeve is made of rubber material, and the elastic sleeve is elastic.

[0014] In some embodiments of the first aspect, the terminal further includes a positioning strip, which is parallel to the central axis of the fixed column, one end of the positioning strip is inserted into the first notch, and the other end of the positioning strip is inserted into an anti-slip groove aligned with the first notch along the axial direction of the fixed column, the positioning strip is tightly fitted with the inner side surface of the anti-slip groove, the positioning strip is tightly fitted with the inner side surface of the first notch, there is a gap between the end face of the positioning strip away from the knob and the inner wall of the first notch, and the positioning strip is made of plastic material.

[0015] In some embodiments of the first aspect, the terminal further includes a rubber block, the rubber block has plasticity, and the rubber block is filled in the gap.

[0016] In some embodiments of the first aspect, an end of the fixed column away from the movable column is integrally connected with an embedded block, the embedded block is disc-shaped, and the diameter of the embedded block is larger than the diameter of the fixed column.

[0017] In some embodiments of the first aspect, an axial positioning ring is integrally connected to the outer surface of the fixed column, and the axial positioning ring is arranged around the fixed column. The diameter of the axial positioning ring is larger than the diameter of the fixed column, and the axial distance between the axial positioning ring and the embedded block is between 0.5 cm and 1 cm.

[0018] In some embodiments of the first aspect, the terminal further includes an embedded metal sheet, one end of the embedded metal sheet is provided with a first circular hole, the other end of the embedded metal sheet is provided with a second circular hole, the embedded metal sheet is perpendicular to the central axis of the fixed column, the first circular hole is sleeved on the fixed column, the embedded metal sheet is located on the side of the axial positioning ring away from the embedded block, the embedded metal sheet is pressed together with a side of the axial positioning ring away from the embedded block, the minimum distance between the first circular hole and the second circular hole is greater than the diameter of the fixed column, and the fastening hole is located on the side of the embedded metal sheet away from the embedded block.

[0019] In some embodiments of the first aspect, the terminal further comprises a locking sleeve, a threaded connection surface is provided on an outer side surface of the fixed cylinder, the diameter of the threaded connection surface is larger than the diameter of the outer side surface of one end of the fixed cylinder close to the movable cylinder, the diameter of the threaded connection surface is smaller than the diameter of the outer side surface of the axial positioning ring, the locking collar is sleeved on the outer side of the threaded connection surface, the inner side surface of the locking sleeve is threadedly connected to the threaded connection surface, the embedded metal sheet is located between the locking sleeve and the axial positioning ring, a side of the embedded metal sheet away from the axial positioning ring is press-fitted with the locking sleeve, and the locking sleeve is made of a metal material;

[0020] The terminal further includes a protective sleeve, an end of the fixed body close to the movable column is inserted into the protective sleeve, the protective sleeve is made of plastic material, the inner side of the protective sleeve is tightly matched with the outer side of the fixed column, the protective sleeve is fixedly connected to the fixed column, the protective sleeve is located on the side of the locking sleeve away from the embedded metal sheet, the end of the fixed column close to the knob is located inside the protective sleeve, the elastic sleeve is located inside the protective sleeve, the outer side of the elastic sleeve is tightly matched with the inner side of the protective sleeve, the protective sleeve is located between the locking sleeve and the knob, and the end surface of the protective sleeve away from the locking sleeve is tightly matched with the end surface of the knob close to the fixed column;

[0021] A second notch corresponding to the first notch is provided on the side of the protective sleeve, and the second notch penetrates the end surface of the protective sleeve close to the knob along the axial direction of the protective sleeve. The inner wall of the second notch is aligned with the inner wall of the first notch along the radial direction of the protective sleeve. The side of the positioning strip close to the central axis of the fixed column is located in the first notch, and the side of the positioning strip away from the central axis of the fixed column is located in the second notch. The outer wall of the positioning strip is tightly fitted with the inner wall of the second notch.

[0022] In the second aspect of the present application, an air-conditioning compressor motor protector is provided, comprising the terminal described in the first aspect, the fixed column being fixedly connected to the housing of the air-conditioning compressor motor protector, and the end of the embedded metal sheet away from the fixed column being electrically connected to the internal circuit or circuit board of the air-conditioning compressor motor protector.

[0023] Beneficial effects:

[0024] The terminal provided by the present application has a fixed column pre-buried in the plastic shell of the protector, wherein the first notch and the second notch are exposed outside the plastic shell of the protector, the movable column is unscrewed from the fixed column, the wire end of the wire is wound on the winding groove, the fastening rod is inserted into the wire pressing hole, and the wire is clamped into the first notch and the second notch at the same time. When the fastening rod abuts against the fastening hole, the knob is pinched by hand and turned in the tightening direction, and the wire end and the surface of the winding groove slide relative to each other. As the fastening rod is gradually inserted into the fastening hole, the wire slides along the first notch and the second notch. When the wire pressing rod approaches the fastening hole, the knob is continued to be turned, and the wire pressing rod gradually presses the wire end against the end face of the port of the fastening hole. Since the wire pressing rod is made of plastic material, it can avoid damaging the wire end, and the end of the wire pressing rod The surface is annular, and the difference in rotational linear speed at different diameters is similar. Therefore, the friction force generated on the wire end is more uniform at different positions, which solves the problem in the prior art that the wire end is easily damaged after being connected to the terminal. In addition, the metal part of the terminal in this application will not be exposed to the outside, and the safety performance is higher than that of the prior art. The rubber block is made of soft rubber. After the wire end is pressed, the rubber block is filled into the gap of the first notch. At the same time, the elastic sleeve seals the port of the wire pressing hole, improves the sealing performance, and isolates oxygen. The anti-slip groove is axially aligned with the first notch and the second notch, and the positioning strip is inserted into the anti-slip groove, the first notch, and the second notch to further improve the sealing performance. At the same time, it can limit the rotation of the knob relative to the fixed column to prevent loosening between the movable column and the fixed column. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the terminal in the embodiment of the present application;

[0027] Figure 2 is an exploded view of the terminal in the embodiment of the present application;

[0028] Figure 3 Schematic diagram of the connection structure between the terminal and the housing of the protector in the embodiment of the present application;

[0029] Figure 4 yes Figure 1 Cross-sectional view in the AA direction;

[0030] Figure 5 yes Figure 3 Cross-sectional view along the BB direction.

[0031] Reference numerals:

[0032] 101. Fixed column; 102. Movable column; 103. Wire pressing rod; 104. Fastening rod; 105. Wire winding groove; 106. Wire pressing hole; 107. Fastening hole; 108. First notch; 109. Knob; 110. Anti-slip groove; 111. Elastic sleeve; 112. Positioning strip; 113. Rubber block; 114. Embedded block; 115. Embedded metal sheet; 116. First circular hole; 117. Second circular hole; 118. Locking sleeve; 119. Threaded connection surface; 120. Protective sleeve; 121. Second notch; 122. Housing; 123. Axial positioning ring; 124. Electric wire; 125. Wire end. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0036] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first feature is directly in contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "specific example", "one embodiment", "example", "some embodiments", "some examples", "some implementation methods" or "possible implementation methods" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are contradictory.

[0038] like Figures 1 to 5As shown, in the first embodiment of the present application, a terminal is provided, including a fixed column 101 and a movable column 102, and the fixed column 101 is made of metal material; the movable column 102 includes a wire pressing rod 103 and a fastening rod 104, one end of the wire pressing rod 103 is fixedly connected to one end of the fastening rod 104, the diameter of the wire pressing rod 103 is larger than the diameter of the fastening rod 104, the central axis of the wire pressing rod 103 and the central axis of the fastening rod 104 are located on the same straight line, and a winding groove 105 is provided on the outer surface of the fastening rod 104 near one end of the wire pressing rod 103, the wire pressing rod 103 is made of plastic material, and the fastening rod 104 is made of metal material; one end of the fixed column 101 is provided with a wire pressing hole 106, and the bottom surface of the wire pressing hole 106 is provided with a fastening hole 107, the central axis of the fastening hole 107 and the central axis of the wire pressing hole 106 are located on the same straight line, and the diameter of the fastening hole 107 is smaller than the wire pressing hole 103. The diameter of the wire hole 106; the fastening rod 104 is threadedly connected to the fastening hole 107 at one end away from the wire pressing rod 103, and the wire pressing rod 103 is plugged into the wire pressing hole 106 at one end close to the fastening rod 104, and the outer side of the wire pressing rod 103 fits tightly with the inner side of the wire pressing hole 106; a first notch 108 is provided on the inner side of the wire pressing hole 106, and the first notch 108 passes through the side of one side of the wire pressing hole 106 along the radial direction of the wire pressing hole 106, and the first The notch 108 is arranged along the axial direction of the wire pressing hole 106, one end of the first notch 108 passes through the end face of the fixing column 101 close to the wire pressing rod 103, and the other end of the first notch 108 is aligned with the end face of the fastening hole 107 close to the wire pressing rod 103 along the radial direction of the wire pressing hole 106; the distance between the end face of the fastening rod 104 away from the wire pressing rod 103 and the wire pressing rod 103 is less than or equal to the axial length of the fastening hole 107.

[0039] In some embodiments of Example 1, a knob 109 is integrally connected to one end of the wire pressing rod 103 away from the fastening rod 104. The knob 109 is disc-shaped, and the central axis of the knob 109 is located on the same straight line as the central axis of the wire pressing rod 103. The diameter of the knob 109 is larger than the diameter of the end of the fixed column 101 close to the wire pressing rod 103. Several anti-slip grooves 110 are provided on the side of the knob 109. The anti-slip grooves 110 pass through the end faces of both ends of the knob 109 along the axial direction of the knob 109, and the anti-slip grooves 110 are distributed in an equiangular circular array around the central axis of the knob 109.

[0040] In some embodiments of Example 1, the terminal further includes an elastic sleeve 111, which is sleeved on the wire pressing rod 103. The elastic sleeve 111 is located between the fixed column 101 and the knob 109. The inner side surface of the elastic sleeve 111 is tightly matched with the side surface of the wire pressing rod 103, the end surface of the elastic sleeve 111 close to the knob 109 is tightly matched with the end surface of the knob 109, the end surface of the elastic sleeve 111 close to the fixed column 101 is tightly matched with the end surface of the fixed column 101, the diameter of the outer side surface of the elastic sleeve 111 is equal to the diameter of the outer side surface of the end of the fixed column 101 close to the wire pressing rod 103, the elastic sleeve 111 is made of rubber material, and the elastic sleeve 111 is elastic.

[0041] In some embodiments of Example 1, the terminal further includes a positioning strip 112, which is parallel to the central axis of the fixed column 101, one end of the positioning strip 112 is inserted into the first notch 108, and the other end of the positioning strip 112 is inserted into the anti-slip groove 110 which is aligned with the first notch 108 along the axial direction of the fixed column 101, the positioning strip 112 is tightly fitted with the inner side surface of the anti-slip groove 110, the positioning strip 112 is tightly fitted with the inner side surface of the first notch 108, there is a gap between the end face of the positioning strip 112 away from the knob 109 and the inner wall of the first notch 108, and the positioning strip 112 is made of plastic material.

[0042] In some implementations of the first embodiment, the terminal further includes a rubber block 113 . The rubber block 113 has plasticity and is filled in the gap.

[0043] In some implementations of Example 1, an embedded block 114 is integrally connected to one end of the fixed column 101 away from the movable column 102 . The embedded block 114 is disc-shaped, and its diameter is larger than that of the fixed column 101 .

[0044] In some embodiments of Example 1, an axial positioning ring 123 is integrally connected to the outer surface of the fixed column 101, and the axial positioning ring 123 is arranged around the fixed column 101. The diameter of the axial positioning ring 123 is larger than the diameter of the fixed column 101, and the axial distance between the axial positioning ring 123 and the embedded block 114 is between 0.5 cm and 1 cm.

[0045] In some embodiments of Example 1, the terminal further includes an embedded metal sheet 115, one end of the embedded metal sheet 115 is provided with a first circular hole 116, and the other end of the embedded metal sheet 115 is provided with a second circular hole 117, the embedded metal sheet 115 is perpendicular to the central axis of the fixed column 101, the first circular hole 116 is sleeved on the fixed column 101, the embedded metal sheet 115 is located on the side of the axial positioning ring 123 away from the embedded block 114, the embedded metal sheet 115 is pressed tightly with the side of the axial positioning ring 123 away from the embedded block 114, the minimum distance between the first circular hole 116 and the second circular hole 117 is greater than the diameter of the fixed column 101, and the fastening hole 107 is located on the side of the embedded metal sheet 115 away from the embedded block 114.

[0046] In some embodiments of the first embodiment, the terminal further includes a locking sleeve 118, a threaded connection surface 119 is provided on the outer surface of the fixed cylinder 101, the diameter of the threaded connection surface 119 is larger than the diameter of the outer surface of the end of the fixed cylinder 101 close to the movable cylinder 102, the diameter of the threaded connection surface 119 is smaller than the diameter of the outer surface of the axial positioning ring 123, the locking sleeve 118 is sleeved on the outer side of the threaded connection surface 119, the inner side of the locking sleeve 118 is threadedly connected to the threaded connection surface 119, and the embedded metal sheet 115 is located in the lock Between the tight sleeve 118 and the axial positioning ring 123, the side of the embedded metal sheet 115 away from the axial positioning ring 123 is pressed and matched with the locking sleeve 118, and the locking sleeve 118 is made of metal material; the terminal also includes a protective sleeve 120, and the end of the fixed body close to the movable column 102 is inserted into the inside of the protective sleeve 120, and the protective sleeve 120 is made of plastic material. The inner side of the protective sleeve 120 is tightly matched with the outer side of the fixed column 101, and the protective sleeve 120 is fixedly connected to the fixed column 101. The protective sleeve 120 is located in the locking sleeve 118 is away from the side of the embedded metal sheet 115, the end of the fixed column 101 close to the knob 109 is located inside the protective sleeve 120, the elastic sleeve 111 is located inside the protective sleeve 120, the outer side of the elastic sleeve 111 is tightly matched with the inner side of the protective sleeve 120, the protective sleeve 120 is located between the locking sleeve 118 and the knob 109, and the end face of the end of the protective sleeve 120 away from the locking sleeve 118 is tightly matched with the end face of the end of the knob 109 close to the fixed column 101; the side of the protective sleeve 120 is provided with a first notch 108 corresponds to the second notch 121, the second notch 121 passes through the end face of the protective sleeve 120 close to the knob 109 along the axial direction of the protective sleeve 120, the inner wall of the second notch 121 is aligned with the inner wall of the first notch 108 along the radial direction of the protective sleeve 120, the side of the positioning bar 112 close to the central axis of the fixed column 101 is located in the first notch 108, and the side of the positioning bar 112 away from the central axis of the fixed column 101 is located in the second notch 121, and the outer wall of the positioning bar 112 is tightly matched with the inner wall of the second notch 121.

[0047] The terminal provided in this embodiment has a fixed column 101 embedded in the plastic shell 122 of the protector, wherein the first notch 108 and the second notch 121 are exposed outside the plastic shell 122 of the protector. The movable column 102 is unscrewed from the fixed column 101, the wire end 125 of the wire 124 is wound around the winding groove 105, the fastening rod 104 is inserted into the wire pressing hole 106, and the wire 124 is clamped into the first notch 108 and the second notch 121. When the fastening rod 104 is in contact with the fastening hole 106, the wire 124 is clamped into the first notch 108 and the second notch 121. 07 abuts, pinch the knob 109 by hand and turn it in the tightening direction, the wire end 125 of the wire 124 slides relative to the surface of the winding groove 105, as the fastening rod 104 is gradually inserted into the fastening hole 107, the wire 124 slides along the first notch 108 and the second notch 121, and when the pressing rod 103 approaches the fastening hole 107, continue to turn the knob 109, and the pressing rod 103 gradually presses the wire end 125 on the end face of the port of the fastening hole 107. Since the pressing rod 103 is made of plastic material, it can The end face of the wire pressing rod 103 is annular, and the difference in the rotational linear speed at different diameters is similar. Therefore, the friction force generated on the wire end 125 is more uniform at different positions, which solves the problem that the wire end 125 of the wire 124 is easily damaged after being connected to the terminal in the prior art. In addition, the metal part of the terminal in this embodiment will not be exposed to the outside, and the safety performance is higher than that of the prior art. The rubber block 113 is made of soft rubber. After the wire end 125 is pressed, the rubber block 113 is filled into the gap of the first notch 108. At the same time, the elastic sleeve 111 seals the port of the wire pressing hole 106, thereby improving the sealing performance and isolating oxygen. The anti-skid groove 110 is axially aligned with the first notch 108 and the second notch 121. The positioning strip 112 is inserted into the anti-skid groove 110, the first notch 108, and the second notch 121, further improving the sealing performance. At the same time, it can limit the rotation of the knob 109 relative to the fixed column 101, and prevent the movable column 102 from loosening with the fixed column 101.

[0048] like Figure 3 and Figure 5 As shown, in embodiment 2 of the present application, an air-conditioning compressor motor protector is provided, including the terminal in embodiment 1, the fixed column 101 is fixedly connected to the shell 122 of the air-conditioning compressor motor protector, and the end of the embedded metal sheet 115 away from the fixed column 101 is electrically connected to the internal circuit or circuit board of the air-conditioning compressor motor protector.

[0049] The air-conditioning compressor motor protector in the second embodiment of the present application adopts the terminal in the first embodiment of the present application, and therefore includes the same functions as the terminal in the first embodiment, which will not be repeated in the second embodiment.

[0050] The above embodiments are merely explanations of the present application and are not limitations of the present application. After reading this specification, those skilled in the art may make modifications to the implementation methods of the present application as needed without any creative contribution. However, as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A terminal, characterized in that: It includes a fixed column and a movable column, wherein the fixed column is made of metal material; The movable column includes a wire pressing rod and a fastening rod, one end of the wire pressing rod is fixedly connected to one end of the fastening rod, the diameter of the wire pressing rod is larger than the diameter of the fastening rod, the central axis of the wire pressing rod and the central axis of the fastening rod are located on the same straight line, and a winding groove is provided on the outer surface of the fastening rod near the end of the wire pressing rod, the wire pressing rod is made of plastic material, and the fastening rod is made of metal material; A wire pressing hole is provided at one end of the fixing column, a fastening hole is provided on the bottom surface of the wire pressing hole, the central axis of the fastening hole is on the same straight line as the central axis of the wire pressing hole, and the diameter of the fastening hole is smaller than the diameter of the wire pressing hole; One end of the fastening rod away from the wire pressing rod is threadedly connected to the fastening hole, and one end of the wire pressing rod close to the fastening rod is plugged into the wire pressing hole, and the outer side surface of the wire pressing rod is tightly matched with the inner side surface of the wire pressing hole; A first notch is provided on the inner side surface of the wire pressing hole, the first notch penetrates the side surface of one side of the wire pressing hole along the radial direction of the wire pressing hole, the first notch is arranged along the axial direction of the wire pressing hole, one end of the first notch penetrates the end surface of the fixing column close to the end of the wire pressing rod, and the other end of the first notch is aligned with the end surface of the fastening hole close to the end of the wire pressing rod along the radial direction of the wire pressing hole; A distance between an end surface of the fastening rod away from the wire pressing rod and the wire pressing rod is less than or equal to an axial length of the fastening hole.

2. The terminal according to claim 1, wherein: A knob is integrally connected to the end of the wire-pressing rod away from the fastening rod. The knob is disc-shaped. The central axis of the knob is located on the same straight line as the central axis of the wire-pressing rod. The diameter of the knob is larger than the diameter of the end of the fixed column close to the wire-pressing rod. A plurality of anti-slip grooves are provided on the side of the knob. The anti-slip grooves pass through the end faces of both ends of the knob along the axial direction of the knob, and the anti-slip grooves are distributed in an equiangular circular array around the central axis of the knob.

3. The terminal according to claim 2, wherein: The terminal also includes an elastic sleeve, which is sleeved on the wire-pressing rod. The elastic sleeve is located between the fixed column and the knob. The inner side of the elastic sleeve is tightly matched with the side of the wire-pressing rod. The end face of the elastic sleeve close to the knob is tightly matched with the end face of the knob. The end face of the elastic sleeve close to the fixed column is tightly matched with the end face of the fixed column. The diameter of the outer side of the elastic sleeve is equal to the diameter of the outer side of the fixed column close to the wire-pressing rod. The elastic sleeve is made of rubber material and is elastic.

4. The terminal according to claim 3, characterized in that The terminal also includes a positioning strip, which is parallel to the central axis of the fixed column. One end of the positioning strip is inserted into the first notch, and the other end of the positioning strip is inserted into an anti-slip groove aligned with the first notch along the axial direction of the fixed column. The positioning strip is tightly fitted with the inner side surface of the anti-slip groove, and the positioning strip is tightly fitted with the inner side surface of the first notch. There is a gap between the end surface of the positioning strip away from the knob and the inner wall of the first notch, and the positioning strip is made of plastic material.

5. The terminal according to claim 4, characterized in that The terminal further includes a rubber block having plasticity and filling the gap.

6. The terminal according to claim 5, characterized in that An embedded block is integrally connected to one end of the fixed column away from the movable column. The embedded block is disc-shaped, and the diameter of the embedded block is greater than the diameter of the fixed column.

7. The terminal according to claim 6, characterized in that An axial positioning ring is integrally connected to the outer surface of the fixed column, and the axial positioning ring is arranged around the fixed column. The diameter of the axial positioning ring is larger than the diameter of the fixed column, and the axial distance between the axial positioning ring and the embedded block is between 0.5 cm and 1 cm.

8. The terminal according to claim 7, wherein: The terminal also includes an embedded metal sheet, one end of the embedded metal sheet is provided with a first circular hole, the other end of the embedded metal sheet is provided with a second circular hole, the embedded metal sheet is perpendicular to the central axis of the fixed column, the first circular hole is sleeved on the fixed column, the embedded metal sheet is located on the side of the axial positioning ring away from the embedded block, the embedded metal sheet is pressed together with a side of the axial positioning ring away from the embedded block, the minimum distance between the first circular hole and the second circular hole is greater than the diameter of the fixed column, and the fastening hole is located on the side of the embedded metal sheet away from the embedded block.

9. The terminal according to claim 8, characterized in that The terminal further comprises a locking sleeve, a threaded connection surface is provided on the outer side surface of the fixed cylinder, the diameter of the threaded connection surface is larger than the diameter of the outer side surface of the fixed cylinder close to the end of the movable cylinder, the diameter of the threaded connection surface is smaller than the diameter of the outer side surface of the axial positioning ring, the locking collar is sleeved on the outer side of the threaded connection surface, the inner side surface of the locking sleeve is threadedly connected to the threaded connection surface, the embedded metal sheet is located between the locking sleeve and the axial positioning ring, the side of the embedded metal sheet away from the axial positioning ring is press-fitted with the locking sleeve, and the locking sleeve is made of metal material; The terminal further includes a protective sleeve, wherein one end of the fixed column close to the movable column is inserted into the protective sleeve, the protective sleeve is made of plastic material, the inner side of the protective sleeve is tightly matched with the outer side of the fixed column, the protective sleeve is fixedly connected to the fixed column, the protective sleeve is located on the side of the locking sleeve away from the embedded metal sheet, the end of the fixed column close to the knob is located inside the protective sleeve, the elastic sleeve is located inside the protective sleeve, the outer side of the elastic sleeve is tightly matched with the inner side of the protective sleeve, the protective sleeve is located between the locking sleeve and the knob, and the end surface of the protective sleeve away from the locking sleeve is tightly matched with the end surface of the knob close to the fixed column; A second notch corresponding to the first notch is provided on the side of the protective sleeve, and the second notch penetrates the end surface of the protective sleeve close to the knob along the axial direction of the protective sleeve. The inner wall of the second notch is aligned with the inner wall of the first notch along the radial direction of the protective sleeve. The side of the positioning strip close to the central axis of the fixed column is located in the first notch, and the side of the positioning strip away from the central axis of the fixed column is located in the second notch. The outer wall of the positioning strip is tightly fitted with the inner wall of the second notch.

10. An air conditioner compressor motor protector, characterized in that: Including the terminal as claimed in claim 9, the fixed column is fixedly connected to the shell of the air-conditioning compressor motor protector, and the end of the embedded metal sheet away from the fixed column is electrically connected to the internal circuit or circuit board of the air-conditioning compressor motor protector.

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