Auxiliary cable clamping structure for electric energy meter

Abstract

The utility model relates to an auxiliary cable clamping structure for an electric energy meter, which is arranged at the bottom of a shell of the electric energy meter and positioned below a wiring terminal, and comprises a fixed plate, an arc-shaped through hole formed in the fixed plate, a fixed clamping piece positioned in the arc-shaped through hole, and a movable clamping piece, the movable clamping piece is arranged in the arc-shaped through hole and can move along the arc-shaped through hole so as to realize the clamping action of the movable clamping piece and the fixed clamping piece; a swing assembly is arranged on the fixing plate and drives the movable clamping piece to move. A locking assembly is arranged on the fixing plate, and the locking assembly is arranged beside the swing assembly and can position the swing assembly; according to the utility model, most of the downward tension generated by the gravity of the cable can be effectively borne, the gravity load of the wiring terminal is greatly reduced, the wiring terminal is only used for clamping and electrical contact, and the problems of looseness, poor contact and the like caused by long-term stress are reduced.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and in particular to a cable auxiliary clamping structure for electricity meters. Background Technology

[0002] Currently, electricity meter wiring commonly uses bolt crimping, which involves tightening the bolts at the terminals to secure the cables and achieve electrical connection. In some industrial settings, electricity meters are often connected to large-diameter power cables, which are heavy and extend over long distances, significantly increasing the gravitational load. Prolonged tension on the bolts can lead to metal fatigue and loosening. As the crimping pressure decreases, it can cause localized heating at the connection point, potentially triggering equipment shutdown and disrupting production. In commercial settings such as shopping malls and office buildings, electricity meters often require multiple parallel cables. The combined weight of these cables at their respective connection points greatly increases the risk of bolt loosening and may even cause arcing due to poor contact, posing a fire hazard. Summary of the Invention

[0003] To solve the above problems, this utility model provides a cable auxiliary clamping structure for electricity meters.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A cable-assisted clamping structure for an electricity meter is disposed at the bottom of the meter's housing and below the wiring terminals. It includes a fixed plate, an arc-shaped through hole on the fixed plate, a fixed clamping member located within the arc-shaped through hole, and a movable clamping member. The movable clamping member is located within the arc-shaped through hole and can move along the arc-shaped through hole to achieve clamping action between the movable clamping member and the fixed clamping member. A swing assembly is disposed on the fixed plate, driving the movement of the movable clamping member. A locking assembly is disposed on the fixed plate, located next to the swing assembly, and can position the swing assembly.

[0006] More specifically, the swing assembly includes a rotating shaft disposed on a fixed plate, a swing rod disposed on the rotating shaft and capable of rotating with the rotating shaft, a driving member disposed at one end of the swing rod, a movable clamping member disposed at the other end of the swing rod, and the rotating shaft disposed between the driving member and the movable clamping member.

[0007] More specifically, the rotating shaft passes through the fixed plate, and two swing rods are respectively and correspondingly disposed at both ends of the rotating shaft; the movable clamping member is disposed between the two swing rods.

[0008] More specifically, two positioning discs are provided on the rotating shaft, a gap is formed between the two positioning discs, and the fixing plate is disposed within the gap.

[0009] Further, a torsional spring is arranged on the rotating shaft.

[0010] Further, the locking assembly comprises a toothed disc arranged on the rotating shaft and rotatable with the rotating shaft, a positioning seat arranged on the fixed plate, a positioning rod arranged in the positioning seat, and a reset spring arranged between the positioning rod and the positioning seat, the reset spring being capable of pushing the positioning rod towards the toothed disc; the positioning rod is inserted between two adjacent teeth of the toothed disc to achieve positioning.

[0011] Further, the positioning seat has a hollow cuboid structure, an opening is formed on the side of the positioning seat close to the toothed disc, and the positioning rod is inserted into the positioning seat through the opening; a sliding groove is arranged on the positioning seat, and a sliding rod is arranged on the positioning rod, the sliding rod penetrating through the sliding groove and protruding from the positioning seat; the sliding groove is arranged along the sliding direction of the positioning rod; and the reset spring is arranged in the positioning seat.

[0012] Further, one side of the tooth groove of the toothed disc is an arc surface, and the other side is a straight surface; one side of the sliding rod is an arc surface, and the other side is a straight surface; the two arc surfaces of the tooth groove and the sliding rod are arranged opposite to each other; and the two straight surfaces of the tooth groove and the sliding rod are arranged opposite to each other, so that the toothed disc can only rotate in one direction.

[0013] Further, the fixed clamping member and the movable clamping member are made of rubber material, and tooth-shaped structures are arranged on the two opposite surfaces of the fixed clamping member and the movable clamping member.

[0014] Further, the driving member comprises a driving rod protruding from the end of the swing rod to one side, and a driving column arranged on the driving rod, the driving column being made of rubber material.

[0015] The cable auxiliary clamping structure for the electric energy meter has the following beneficial effects: the arc-shaped waist hole provides a moving space for the movable clamping member, the movable clamping member is driven to move by the swing assembly, the clamping and loosening actions can be flexibly realized, the maintenance and replacement of the cable are facilitated, and the cable auxiliary clamping structure can be adapted to cables with different diameters; the locking assembly locks the swing assembly after the movable clamping member reaches the target position, the position of the movable clamping member is stable, and the reliability of the clamping state is ensured; most of the downward pulling force generated by the gravity of the cable can be effectively borne, the gravity load of the wiring terminal is greatly reduced, the wiring terminal is only used for clamping and electrical contact, and problems such as loosening and poor contact caused by long-term stress are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the cable auxiliary clamping structure for the electric energy meter;

[0017] Figure 2 is a combined structural schematic view of the swing assembly and the locking assembly;

[0018] Figure 3 Figure 1 is a structural schematic diagram of the locking assembly of the utility model.

[0019] In the figure: 10, fixed plate; 20, arc-shaped through hole; 30, fixed clamping piece; 40, movable clamping piece; 50, swing assembly; 51, rotating shaft; 52, swing rod; 53, driving piece; 54, positioning disc; 60, locking assembly; 61, toothed disc; 62, positioning seat; 63, positioning rod; 64, sliding groove; 65, sliding rod. DETAILED DESCRIPTION

[0020] The technical solutions of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0021] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. The movement direction is also a relative movement direction, and does not limit the absolute movement direction. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] As Figure 1The application provides a cable auxiliary clamping structure for an electric energy meter. The structure is arranged at the bottom of the housing of the electric energy meter and below the terminal according to the use requirement. The corresponding cable access process is that the cable end is connected to the terminal after passing through the clamping structure. The purpose is to bear most of the downward pulling force generated by the cable gravity through the clamping structure, so that the terminal does not need to bear the gravity load, and only needs to complete the clamping and electrical contact of the cable.

[0024] The clamping structure can be directly formed on the housing of the electric energy meter, or can be fixed on the housing by external installation.

[0025] The clamping mechanism includes a fixed plate 10, an arc-shaped through hole 20 arranged on the fixed plate 10, a fixed clamping piece 30 located in the arc-shaped through hole 20, and a movable clamping piece 40. The arc-shaped through hole 20 is an arc-shaped waist hole, which provides a moving space for the movable clamping piece 40. The movable clamping piece 40 is movable in the arc-shaped through hole 20 to realize the clamping action of the movable clamping piece 40 and the fixed clamping piece 30. When the movable clamping piece 40 and the fixed clamping piece 30 are close to each other, the cable can be clamped. When the movable clamping piece 40 and the fixed clamping piece 30 are away from each other, the cable can be taken out for maintenance and replacement. A swing assembly 50 is arranged on the fixed plate 10. One end of the swing assembly 50 is connected to the movable clamping piece 40. The swing assembly 50 drives the movable clamping piece 40 to move along the arc-shaped through hole 20, thereby controlling the realization of the clamping action. A locking assembly 60 is arranged on the fixed plate 10. The locking assembly 60 is arranged beside the swing assembly 50 and can position the swing assembly 50. That is, after the swing assembly 50 drives the movable clamping piece 40 to reach the target clamping position, the locking assembly 60 can lock the state of the swing assembly 50, thereby fixing the position of the movable clamping piece 40 and ensuring the stability of the clamping state.

[0026] As an embodiment of the application, as shown in Figure 2The swing assembly 50 shown includes a rotating shaft 51 arranged on the fixed plate 10, a swing rod 52 arranged on the rotating shaft 51 and capable of rotating with the rotating shaft 51, a driving piece 53 arranged at one end of the swing rod 52, the movable clamping piece 40 is arranged at the other end of the swing rod 52, and the rotating shaft 51 is arranged between the driving piece 53 and the movable clamping piece 40; here, by pulling the driving piece 53, the swing rod 52 can be swung around the rotating shaft 51 as the center, and the swing of the swing rod 52 will be directly converted into the movement of the movable clamping piece 40, thereby realizing the approach or away from the fixed clamping piece 30, and finally completing the clamping or loosening function of the cable; at the same time, the rotating shaft 51 is arranged on the side close to the driving piece 53, that is, the distance from the movable clamping piece 40 to the rotating shaft 51 is greater than the distance from the driving piece 53 to the rotating shaft 51, only a small stroke pulling action needs to be applied to the driving piece 53, and through the lever effect of the swing rod 52, the movable clamping piece 40 can be driven to produce a large stroke movement.

[0027] As an embodiment of the present application, the rotating shaft 51 penetrates through the fixed plate 10, so that the two ends of the rotating shaft 51 are located on the two sides of the fixed plate 10 respectively, and the swing rod 52 is provided with two ends corresponding to the two ends of the rotating shaft 51 respectively; the movable clamping piece 40 is arranged between the two swing rods 52, so that the movable clamping piece 40 can be synchronously driven by the two swing rods 52 during movement, avoiding the tilting and jamming of the movable clamping piece 40 due to unilateral force, and ensuring uniform force when clamping the cable.

[0028] As an embodiment of the present application, two positioning discs 54 are arranged on the rotating shaft 51, the two positioning discs 54 are arranged along the axial direction of the rotating shaft 51 and form a gap therebetween, and the fixed plate 10 is arranged in the gap, the width of the gap matches the thickness of the fixed plate 10, so that the fixed plate 10 can be embedded in the gap and arranged inside the gap, and the axial displacement or shift of the rotating shaft 51 can be effectively limited.

[0029] As an embodiment of the present application, the fixed clamping piece 30 and the movable clamping piece 40 are made of rubber material, which has good elasticity and flexibility. On the one hand, it can avoid the damage to the insulation layer of the cable caused by direct contact with the metal material, effectively protect the outer structure of the cable, and reduce the risk of short circuit and electric leakage; on the other hand, the elasticity of the rubber can adapt to cables of different diameters, and the material can slightly deform to fit the surface of the cable during clamping, which not only improves the contact tightness, but also can be compatible with cables of multiple specifications without replacing the clamping piece, thereby enhancing the structural versatility; at the same time, the friction coefficient of the rubber material is higher than that of the metal, which can further increase the friction between the cable and the rubber material, thereby preventing the cable from sliding under the action of gravity.

[0030] The fixed clamping piece 30 and the movable clamping piece 40 are provided with tooth-shaped structures on two opposite surfaces, tooth-shaped protrusions can increase the contact area between the clamping piece and the cable surface, further improve the firmness of clamping, and ensure that the cable remains in a stable position for a long time.

[0031] As an embodiment of the present application, the driving piece 53 includes a driving rod extending to one side from the end of the swing rod 52 and a driving column provided on the driving rod. The driving column is made of rubber material, which has good elasticity and slip resistance. When the driving column is actuated, the operating force can be stably transmitted to the driving rod through the elastic feedback of the material, thereby driving the swing assembly 50 and the movable clamping piece 40 to complete the corresponding action.

[0032] As an embodiment of the present application, a torsional spring can be provided on the rotating shaft 51. The torsional spring continuously generates a torsional force acting on the rotating shaft 51 through its elastic deformation, and then transmits the torsional force to the swing assembly 50 linked with the rotating shaft 51. The elastic force of the torsional spring continuously drives the movable clamping piece 40 to have a tendency to approach the fixed clamping piece 30, thereby ensuring that a stable clamping force can be maintained when the cable is clamped. Even if there is slight loosening, the movable clamping piece 40 can automatically approach the fixed clamping piece 30 through the continuous power, thereby ensuring the reliability of the clamping effect.

[0033] As an embodiment of the present application, as shown in Figure 3 The locking assembly 60 includes a toothed disc 61 provided on the rotating shaft 51 and rotatable with the rotating shaft 51, a positioning seat 62 provided on the fixed plate 10, a positioning rod 63 provided in the positioning seat 62, and a return spring provided between the positioning rod 63 and the positioning seat 62. The elastic force of the return spring always pushes the positioning rod 63 to the direction of the toothed disc 61 and inserts it between the adjacent two teeth of the toothed disc 61, so that the positioning rod 63 maintains a tendency to contact the toothed disc 61 to achieve the locking and positioning of the swing assembly 50.

[0034] The present embodiment can be used alone (without a torsional spring) or can be used for locking and positioning based on a torsional spring. The torsional spring provides continuous power to the movable clamping piece 40 to ensure stable clamping force. The locking assembly 60 further locks the swing assembly 50 to prevent accidental loosening and enhances the clamping reliability. Even if the torsional spring fails (such as elastic failure or breakage), the locking assembly 60 can still limit the rotation of the swing assembly 50 through the engagement of the positioning rod 63 and the toothed disc 61, thereby avoiding the loosening of the swing assembly 50, the displacement of the movable clamping piece 40, and the failure of cable clamping.

[0035] As an embodiment of the present application, the positioning seat 62 is a hollow cuboid structure, and the positioning seat 62 is open on one side close to the tooth disc 61, and the positioning rod 63 is inserted into the positioning seat 62 from the opening; a sliding groove 64 is arranged on the positioning seat 62, and the opening direction of the sliding groove 64 is consistent with the sliding direction of the positioning rod 63; a sliding rod 65 is arranged on the positioning rod 63, the sliding rod 65 passes through the sliding groove 64 and protrudes from the positioning seat 62, the sliding direction of the positioning rod 63 is constrained by the cooperation of the sliding groove 64 and the sliding rod 65, and the part protruding from the positioning seat 62 provides a force point for the operator to manually adjust the position of the positioning rod 63; the reset spring is arranged in the positioning seat 62, so that the reset spring is always in a stable stress state, and the spring is prevented from being exposed to the outside and being affected by external factors to fail.

[0036] As an embodiment of the present application, the locking assembly 60 is a combination of a ratchet and a gear, one side of the tooth groove on the tooth disc 61 is an arc surface, and the other side is a straight surface; one side of the sliding rod 65 is an arc surface, and the other side is a straight surface, the two arc surfaces of the tooth groove and the sliding rod 65 are arranged opposite to each other, and the two straight surfaces of the tooth groove and the sliding rod 65 are arranged opposite to each other; when the tooth disc 61 rotates in a certain direction, the straight surface of the tooth groove directly abuts against the straight surface of the sliding rod 65, forming a block to limit the rotation of the tooth disc 61; when the tooth disc 61 rotates in the opposite direction, the arc surface of the tooth groove contacts the arc surface of the sliding rod 65, and the smooth transition of the arc surface can push the sliding rod 65 to compress the reset spring and retreat, thereby providing space for the rotation of the tooth disc 61, so that the one-way rotation function of the tooth disc 61 is realized; during the clamping operation, the clamping function can be realized without manually operating the sliding rod 65.

[0037] In combination with the present embodiment, the torsional spring arranged on the rotating shaft 51 can realize elastic deformation to continuously output a reverse force to the swing assembly 50, so that the swing assembly 50 is driven to move the movable clamping part 40 away from the fixed clamping part 30; when the sliding rod 65 is adjusted to be separated from the tooth groove of the tooth disc 61, the reverse force of the torsional spring is no longer limited by the positioning and locking state, and drives the rotating shaft 51 to drive the swing assembly 50 to act, and then drives the movable clamping part 40 to automatically move away from the fixed clamping part 30, so that the automatic opening of the clamping structure is realized without additional manual operation of the driving part 53.

[0038] The structure of the application transfers most of the cable gravity load to itself, so that the wiring terminal only bears the electrical contact and basic clamping functions, thereby reducing the wear and failure risk of the wiring terminal from the root; meanwhile, the clamping member adopts the combination of rubber material and tooth structure to adapt to cables of multiple specifications and prevent sliding, the lever design of the swing assembly 50 simplifies the operation, the torsional spring and the locking assembly 60 form double protection, meanwhile, the reverse force of the torsional spring realizes the automatic opening of the movable clamping member 40, and comprehensively improves the reliability, safety and installation and operation efficiency of the cable fixation, thereby providing support for the stable operation of the electric energy meter.

[0039] It should be emphasized that: the above is only a preferred embodiment of the present application, and does not limit the present application in any form, any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the technical scheme of the present application.

Claims

1. A cable auxiliary clamping structure for an electric energy meter, provided at a bottom of a housing of the electric energy meter and below a terminal, characterized in that, The utility model provides a kind of arc-shaped hole clamp, including fixed plate (10), be arranged on fixed plate (10) arc-shaped through-hole (20), fixed clamping piece (30) in arc-shaped through-hole (20), and movable clamping piece (40) are located in arc-shaped through-hole (20) and can be moved along arc-shaped through-hole (20) to realize movable clamping piece (40) and the clamping action of fixed clamping piece (30);Swing assembly (50) is provided on the fixed plate (10), and the movement of movable clamping piece (40) is driven by swing assembly (50);Locking assembly (60) is provided on the fixed plate (10), and locking assembly (60) is positioned beside swing assembly (50) and can be positioned to swing assembly (50).

2. The cable-assisted clamping structure for an electric energy meter according to claim 1, characterized by, The swing assembly (50) includes a rotating shaft (51) provided on the fixed plate (10), a swing lever (52) provided on the rotating shaft (51) and rotatable with the rotating shaft (51), and a driving member (53) provided at one end of the swing lever (52). The movable clamping piece (40) is provided at the other end of the swing lever (52). The rotating shaft (51) is provided between the driving member (53) and the movable clamping piece (40).

3. The cable-assisted clamping structure for an electric energy meter according to claim 2, characterized by, The rotating shaft (51) passes through the fixed plate (10). The swing lever (52) is provided with two ends corresponding to the two ends of the rotating shaft (51). The movable clamping piece (40) is provided between the two swing levers (52).

4. The cable-assisted clamping structure for an electric energy meter according to claim 3, characterized by, Two positioning discs (54) are provided on the rotating shaft (51). A gap is formed between the two positioning discs (54). The fixed plate (10) is provided in the gap.

5. The cable-assisted clamping structure for an electric energy meter according to claim 2, characterized by, A torsional spring is provided on the rotating shaft (51).

6. The cable-assisted clamping structure for an electric energy meter according to claim 1, wherein The locking assembly (60) includes a toothed disc (61) provided on the rotating shaft (51) and rotatable with the rotating shaft (51), a positioning seat (62) provided on the fixed plate (10), a positioning rod (63) provided in the positioning seat (62), and a return spring provided between the positioning rod (63) and the positioning seat (62). The return spring can push the positioning rod (63) towards the toothed disc (61). The positioning rod (63) is inserted between two adjacent teeth of the toothed disc (61) to realize positioning.

7. The cable-assisted clamping structure for an electric energy meter according to claim 6, characterized by, The positioning seat (62) is a hollow rectangular structure. The side of the positioning seat (62) close to the toothed disc (61) is open. The positioning rod (63) is inserted into the positioning seat (62) from the opening. A sliding groove (64) is provided on the positioning seat (62). A sliding rod (65) is provided on the positioning rod (63). The sliding rod (65) passes through the sliding groove (64) and protrudes from the positioning seat (62). The sliding groove (64) is arranged along the sliding direction of the positioning rod (63). The return spring is provided inside the positioning seat (62).

8. The cable-assisted clamping structure for an electric energy meter according to claim 7, characterized by, The tooth groove on the tooth disc (61) is arc on one side and straight on the other side; one side of the sliding rod (65) is arc and the other side is straight, and the two arcs of the tooth groove and the sliding rod (65) are oppositely arranged; the two straight sides of the tooth groove and the sliding rod (65) are oppositely arranged, so that the tooth disc (61) can only rotate in one direction.

9. The cable-assisted clamping structure for an electric energy meter according to claim 1, wherein The fixed clamping piece (30) and the movable clamping piece (40) are made of rubber material, and tooth-shaped structures are arranged on the two opposite surfaces of the fixed clamping piece (30) and the movable clamping piece (40).

10. The cable-assisted clamping structure for an electric energy meter according to claim 2, characterized by, The driving piece (53) comprises a driving rod extending to one side from the end of the swing rod (52) and a driving column arranged on the driving rod, and the driving column is made of rubber material.

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