CN215220399U

CN215220399U - Resistor with high structural strength

Info

Publication number: CN215220399U
Application number: CN202121496660.5U
Authority: CN
Inventors: 林少波
Original assignee: Shenzhen Hot Time Electronics Co ltd
Current assignee: Shenzhen Hot Time Electronics Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-12-17
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a resistor that structural strength is high, including insulating casing, resistance base member, sliding contact pole subassembly, a plurality of binding post, the resistance base member sets up insulating casing's inside, the sliding contact pole subassembly is including the shape metal pole of falling T, the shape metal pole of falling T runs through insulating casing sets up, be provided with on the resistance base member with the shape metal pole of falling T matches's shape groove of falling T, the shape metal pole of falling T is in slide in the shape groove of falling T. The utility model improves the structural strength on one hand and ensures the connection stability on the other hand through the arranged embedded sliding contact structure, thereby effectively avoiding the phenomenon of poor contact after long-term sliding wear and improving the use experience of products; the corrugated curtain is used for shielding the wiring terminals and the like, so that the aging speed of the exposed metal part can be effectively reduced, and the service life of the product is prolonged.

Description

Resistor with high structural strength

Technical Field

The utility model relates to an electricity device technical field, concretely relates to resistor that structural strength is high.

Background

A resistor is a common electrical device, and the resistor is generally directly called as a resistor in daily life. Is a current limiting element, and after a resistor is connected in a circuit, the resistance value of the resistor is fixed, generally two pins, and the resistor can limit the current passing through a branch connected with the resistor. The resistance value that cannot be changed is called a fixed resistor. Variable resistance is called a potentiometer or a variable resistor. Ideally the resistor is linear, i.e. the instantaneous current through the resistor is proportional to the applied instantaneous voltage. A variable resistor for voltage division. On the exposed resistor body, one to two movable metal contacts are pressed. The contact location determines the resistance between either end of the resistor and the contact.

The wire-wound variable resistor is a commonly used variable resistor, but has disadvantages that a sliding metal plate as a movable metal contact is easily worn after long-term use, the sliding metal plate becomes thin after being worn, stable connection with a resistor body cannot be realized sometimes, the structural strength is not high enough, and the variable resistor cannot be normally used under the conditions that deformation and the like easily occur under the action of external force.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve lies in: how to solve the problems that poor contact is easy to occur after the wire-wound variable resistor is used for a long time and the structural strength is low, and provides a resistor with high structural strength.

The utility model discloses a solve above-mentioned technical problem through following technical scheme, the utility model discloses an insulating casing, resistance base member, sliding contact pole subassembly, a plurality of binding post, the resistance base member sets up insulating casing's inside, the sliding contact pole subassembly is including the shape of falling T metal pole, the shape of falling T metal pole runs through insulating casing sets up, be provided with on the resistance base member with the shape of falling T metal pole matches the shape of falling T groove, the shape of falling T metal pole is in slide in the shape of falling T groove, it is a plurality of binding post divide into two sets ofly, a set of two, wherein a set of with the shape of falling T metal pole is connected, another group with the resistance base member is connected.

Furthermore, the sliding contact rod assembly further comprises an insulating sleeve, and the insulating sleeve is sleeved on the upper portion of the inverted T-shaped metal rod.

Furthermore, the sliding contact rod assembly further comprises a positioning structure, the positioning structure comprises at least one spring column and a positioning disc, one end of the spring column is connected with the positioning disc, the other end of the spring column is connected with the insulating sleeve, and the positioning disc is sleeved outside the insulating sleeve and located outside the insulating shell.

Furthermore, a gap exists between the lower end surface of the inverted T-shaped metal rod and the inverted T-shaped groove.

Furthermore, the sliding contact rod assembly further comprises a pressing handle, and the pressing handle is arranged on the insulating sleeve.

Furthermore, the wiring terminals all comprise an insulation sleeve shell, a metal wiring terminal and a locking bolt, the locking bolt penetrates through the insulation sleeve shell and is connected with the insulation sleeve shell in a rotating mode, and the metal wiring terminal is arranged inside the insulation sleeve shell and is connected with the resistor base body/the inverted T-shaped metal rod.

Furthermore, a sliding groove matched with the size of the insulating sleeve is formed in the insulating shell.

Furthermore, the opening part of insulation support shell with all be provided with the ripple curtain on the sliding tray, the ripple curtain includes flexible buckled plate, a plurality of location sliding pin, and a plurality of location sliding pin set up respectively the both sides of flexible buckled plate, and with insulation support shell's opening with sliding tray sliding connection.

Still further, the structurally strong resistor further comprises a plurality of bottom weighted feet disposed on the insulating housing.

Compared with the prior art, the utility model has the following advantages: by the aid of the embedded sliding contact structure, structural strength is improved, connection stability is guaranteed, poor contact after long-term sliding abrasion can be effectively avoided, and use experience of products is improved; the corrugated curtain shields the wiring terminals and the like, so that the aging speed of the exposed metal part can be effectively reduced, the service life of the product is prolonged, and the corrugated curtain is worth being popularized and used.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a resistor according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a sliding contact bar assembly and a resistor base in an embodiment of the invention;

fig. 3 is a front view of a terminal in an embodiment of the invention;

fig. 4 is a side view of a corrugated curtain on a terminal block in an embodiment of the invention;

fig. 5 is a schematic view of the combination of the limiting groove and the positioning sliding pin in the embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 to 5, the present embodiment provides a technical solution: the utility model provides a resistor that structural strength is high, includes insulating casing 1, resistance base member 9, sliding contact pole subassembly, a plurality of binding post, resistance base member 9 is fixed insulating casing 1's inside, sliding contact pole subassembly is including falling T shape metal pole 23, the metal pole 23 that falls T runs through insulating casing 1 sets up, be provided with on the resistance base member 9 with the groove 91 that falls T shape metal pole 23 matches, the metal pole 23 that falls T can slide in the groove 91 that falls T, and is a plurality of binding post divide into two sets ofly, a set of two, one of them a set of with the metal pole 23 that falls T is connected, another set of with resistance base member 9 is connected. Through the embedded sliding contact structure who sets up, improved structural strength on the one hand, on the other hand guarantees the stability of connecting, can avoid appearing contact failure's phenomenon after long-term sliding wear effectively, has improved the use experience of product.

In this embodiment, a plurality of connecting terminals include first upper connecting terminal 3, second upper connecting terminal 4, first lower connecting terminal 5, second lower connecting terminal 6, first upper connecting terminal 3 with upper portion one side of inverted T-shaped metal rod 23 is connected, second upper connecting terminal 4 with the upper portion opposite side of inverted T-shaped metal rod 23 is connected, first lower connecting terminal 5 with one side of resistance base member 9 is connected, second lower connecting terminal 6 with the opposite side of resistance base member 9 is connected. Each connecting terminal is used for being connected into the circuit according to requirements.

In this embodiment, the sliding contact rod assembly further includes an insulating sleeve 21, and the insulating sleeve 21 is sleeved on the upper portion of the inverted T-shaped metal rod 23 for improving the external insulation of the inverted T-shaped metal rod 23.

In this embodiment, the sliding contact rod assembly further includes a positioning structure, the positioning structure includes at least one spring column 222 and a positioning disc 221, one end of the spring column 222 is connected to the positioning disc 221, the other end of the spring column is connected to the insulating sleeve 21, and the positioning disc 221 is sleeved outside the insulating sleeve 21 and located outside the insulating housing 1. After the position of the inverted T-shaped metal rod 23 is adjusted, the spring column 222 is still in a compressed state, and presses the positioning plate 221 by using elastic force, so as to increase the friction force between the positioning plate 221 and the insulating housing 1, thereby temporarily fixing the position of the inverted T-shaped metal rod 23. The spring post 222 may be replaceable.

In this embodiment, the cross-sectional thickness of the lower portion of the inverted T-shaped groove 91 is slightly larger than the cross-sectional thickness of the lower portion of the inverted T-shaped metal rod 23. (see fig. 2) when the metal bar 23 is pressed down, the metal bar 23 is pressed down first, and at this time, the lower part of the metal bar 23 is not in contact with the inner wall of the inverted T-shaped groove 91 of the resistor substrate 9, and after the pressing down force is removed, the metal bar 23 moves up under the restoring force of the positioning structure, and then is in stable contact with the inner wall of the inverted T-shaped groove 91.

In this embodiment, the sliding contact rod assembly further includes a pressing handle 22, and the pressing handle 22 is disposed on the top of the insulating sleeve 21 for facilitating the application of force to press and slide the inverted T-shaped metal rod 23.

In this embodiment, the upper end of the insulating housing 1 is provided with a sliding groove 11 matching with the size of the insulating sleeve 21, and the sliding groove 11 is used for sliding the insulating sleeve 21.

In this embodiment, the structurally strong resistor further comprises a plurality of bottom weight feet 7, the bottom weight feet 7 are mounted on the insulating housing 1, and the bottom weight feet 7 are used for facilitating the placement of the resistor (lowering the center of gravity).

In this embodiment, the first upper connection terminal 3, the second upper connection terminal 4, the first lower connection terminal 5, and the second lower connection terminal 6 each include an insulation sleeve 41, a metal terminal 10, and a locking bolt 42, the locking bolt 42 penetrates through the insulation sleeve 41 and is rotatably connected with the insulation sleeve 41, and the metal terminal 10 is disposed inside the insulation sleeve 41 and connected with the resistor substrate 9/the inverted T-shaped metal rod 23.

In this embodiment, the opening of insulating cover case 41 with all be provided with corrugated curtain 8 on the sliding tray 11, corrugated curtain 8 includes flexible buckled plate 81, a plurality of location sliding pin 82, and a plurality of location sliding pin 82 set up respectively flexible buckled plate 81's both sides edge, and with the opening of insulating cover case 41 with sliding tray 11 edge sliding connection.

In this embodiment, the opening of the insulation casing 41 and the two side edges of the sliding groove 11 are both provided with a limiting groove 83, the shape of the limiting groove 83 matches that of the positioning sliding pin 82, and the positioning sliding pin 82 can slide in the limiting groove 83 without falling off. The positioning sliding pin 82 is a cylindrical structure with a large end and a small end, the large end is clamped into the outer side of the limiting groove 83, and the small end is clamped into the inner side of the limiting groove 83. This restrains the groove 83 while preventing it from falling off when sliding.

In this embodiment, the flexible corrugated plate 81 is slowly folded after receiving an external force in a predetermined direction.

In this embodiment, one end of the corrugated curtain 8 on the sliding groove 11 is fixed to the end of the sliding groove 11, and the other end is connected to the insulating sleeve 21. Foreign substances can be prevented from falling into the inside of the insulating housing 1.

In this embodiment, a section of the corrugated curtain 8 located at the opening of the insulation casing 41 is fixed to the upper end of the opening, and the other end naturally (influenced by its own weight) falls to close the opening.

In this embodiment, an active heat dissipation structure may be mounted on the insulating housing 1 if necessary.

The working principle is as follows: firstly, connecting a wiring terminal into a circuit as required, locking a wire by using a locking bolt, pressing down the inverted T-shaped metal rod 23 when the resistance value needs to be adjusted, wherein the lower part of the inverted T-shaped metal rod 23 is not contacted with the inner wall of the inverted T-shaped groove 91 of the resistor base body 9, sliding the inverted T-shaped metal rod 23, after the position of the inverted T-shaped metal rod 23 is adjusted, the inverted T-shaped metal rod 23 moves upwards under the restoring force of the positioning structure after the downward force is removed, pressing the positioning disc 221 by using elastic force, increasing the friction force between the positioning disc 221 and the insulating shell 1, further temporarily fixing the position of the inverted T-shaped metal rod 23, and realizing the stable contact between the inverted T-shaped metal rod 23 and the inner wall of the inverted T-shaped groove 91.

In conclusion, the resistor with high structural strength has the advantages that the embedded sliding contact structure is arranged, so that the structural strength is improved, the connection stability is ensured, the phenomenon of poor contact after long-term sliding abrasion can be effectively avoided, and the use experience of the product is improved; the corrugated curtain shields the wiring terminals and the like, so that the aging speed of the exposed metal part can be effectively reduced, the service life of the product is prolonged, and the corrugated curtain is worth being popularized and used.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A resistor with high structural strength is characterized in that: including insulating casing, resistance base member, sliding contact pole subassembly, a plurality of binding post, the resistance base member sets up insulating casing's inside, sliding contact pole subassembly is including falling T shape metal pole, it runs through to fall T shape metal pole insulating casing sets up, be provided with on the resistance base member with the shape of falling T shape metal pole assorted fall T-shaped groove, it is in to fall T shape metal pole slide in the shape of falling T-shaped inslot, and is a plurality of binding post divide into two sets ofly, a set of two, one of them a set of with the shape of falling T metal pole is connected, another group with the resistance base member is connected.

2. A structurally strong resistor according to claim 1, wherein: the sliding contact rod assembly further comprises an insulating sleeve, and the insulating sleeve is sleeved on the upper portion of the inverted T-shaped metal rod.

3. A structurally strong resistor according to claim 2, wherein: the sliding contact rod assembly further comprises a positioning structure, the positioning structure comprises at least one spring column and a positioning disc, one end of the spring column is connected with the positioning disc, the other end of the spring column is connected with the insulating sleeve, and the positioning disc is sleeved outside the insulating sleeve and located outside the insulating shell.

4. A structurally strong resistor according to claim 1, wherein: and a gap is reserved between the lower end surface of the inverted T-shaped metal rod and the inverted T-shaped groove.

5. A structurally strong resistor according to claim 2, wherein: the sliding contact rod assembly further comprises a pressing handle, and the pressing handle is arranged on the insulating sleeve.

6. A structurally strong resistor according to claim 2, wherein: the wiring terminal comprises an insulation sleeve shell, a metal wiring end and a locking bolt, wherein the locking bolt penetrates through the insulation sleeve shell and is connected with the insulation sleeve shell in a rotating mode, and the metal wiring end is arranged in the insulation sleeve shell and connected with the resistor base body/the inverted T-shaped metal rod.

7. A structurally strong resistor according to claim 6, wherein: and the insulating shell is provided with a sliding groove matched with the insulating sleeve in size.

8. A structurally strong resistor according to claim 7, wherein: the opening part of insulating casing shell with all be provided with the ripple curtain on the sliding tray, the ripple curtain includes flexible buckled plate, a plurality of location sliding pin, and a plurality of location sliding pin set up respectively the both sides of flexible buckled plate, and with the opening of insulating casing shell with sliding tray sliding connection.

9. A structurally strong resistor according to claim 1, wherein: the resistor with high structural strength further comprises a plurality of bottom counterweight feet, and the bottom counterweight feet are arranged on the insulating shell.