CN219497451U - Direct current resistance box - Google Patents

Abstract

The application relates to a direct-current resistor box, which comprises a resistor box body, a protection box and a bearing plate, wherein the bearing plate is arranged at the bottom side of the resistor box body, and the bearing plate is matched with the protection box; the bearing plate and the resistor box body are arranged in the protection box, a first protection component for protecting the resistor box body is arranged at the bottom side of the bearing plate, a second protection component for protecting the resistor box body is arranged on the side wall of the bearing plate, and a third protection component is arranged at the top side of the bearing plate; the third protection assembly comprises a guide plate, a limiting plate and a second spring, wherein the guide plate is fixedly connected to one side of the bearing plate, which is close to the resistor box body, and is abutted against the side wall of the resistor box body; the limiting plate is connected to one side, far away from the bearing plate, of the guide plate in a sliding manner, and the limiting plate is abutted to the top side of the resistor box body; two ends of the second spring are respectively connected with the guide plate and the limiting plate. The method has the effects of reducing the impulsive force received by the resistor box and keeping the accuracy of measured data.

Description

Direct current resistance box

Technical Field

The application relates to the technical field of detection instruments, in particular to a direct-current resistor box.

Background

The rotary AC/DC resistor box is used for regulating resistance value in AC/DC circuit, and can also be used as bridge arm of bridge, and is the most commonly used instrument in electric measurement and electric experiment.

Because the resistor box is usually carried to a designated area for verification, if devices such as resistors in the resistor box are subjected to impact such as collision, damage is easy to occur, and thus, measurement data is inaccurate.

Disclosure of Invention

In order to reduce the impact force to which the resistor box is subjected and maintain the accuracy of measured data, the application provides a direct current resistor box.

The application provides a direct current resistance box adopts following technical scheme:

the direct-current resistor box comprises a resistor box body, a protection box and a bearing plate, wherein the bearing plate is arranged at the bottom side of the resistor box body and is matched with the protection box; the bearing plate and the resistor box body are both arranged in the protection box, a first protection component for protecting the resistor box body is arranged at the bottom side of the bearing plate, a second protection component for protecting the resistor box body is arranged on the side wall of the bearing plate, and a third protection component is arranged at the top side of the bearing plate;

the third protection assembly comprises a guide plate, a limiting plate and a second spring, wherein the guide plate is fixedly connected to one side, close to the resistor box body, of the bearing plate, and is abutted to the side wall of the resistor box body; the limiting plate is connected to one side, far away from the bearing plate, of the guide plate in a sliding manner, and the limiting plate is abutted to the top side of the resistor box body; and two ends of the second spring are respectively connected with the guide plate and the limiting plate.

Through adopting above-mentioned technical scheme, when the resistance box body received the impulsive force, absorbed the impulsive force through the second spring for reduce the impulsive force that the resistance box body received, simultaneously, protect the resistance box body through first protection component and second protection component from different directions, further reduce the impulsive force that the resistance box body received, thereby keep the accuracy of survey data.

Preferably, the guide plate is arranged in a U shape, a guide groove is formed in one side, far away from the bearing plate, of the guide plate, and the second spring is fixed at the bottom of the guide groove;

the limiting plate is L-shaped, one section of the limiting plate is inserted into the guide groove, one end, away from the bottom of the guide groove, of the second spring is fixedly connected with one section of the limiting plate inserted into the guide groove, and the other section of the limiting plate is abutted to the top side of the resistor box body.

Through adopting above-mentioned technical scheme, the second spring can restrict the limiting plate for the position of deflector when absorbing the impulsive force, and the restoring force when the limiting plate returns to the butt resistance box body can be buffered to the second spring, reduces the impulsive force to the resistance box body.

Preferably, the limiting plate is arranged at the opening of the guide in an extending manner, and a first avoiding groove is formed between the limiting plate and the bearing plate.

Through adopting above-mentioned technical scheme, when the staff needs the installation resistance box body, the limiting plate is kept away from the loading board earlier, pushes in the resistance box body from first groove of dodging again until the resistance box body falls into on the loading board completely, and the staff installation resistance box body of being convenient for through the setting in groove is dodged to first.

Preferably, the bearing plate and the first avoiding groove are fixed with a limiting threshold, and the limiting threshold is perpendicular to the bearing plate.

Through adopting above-mentioned technical scheme, when the resistance box body is installed to the staff, need make the distance between limiting plate and the spacing threshold be greater than the height of resistance box body, when the resistance box body is installed to the staff, limiting plate and spacing threshold butt simultaneously in the resistance box body to it is spacing to form the resistance box body.

Preferably, the first protection component comprises a guide post and a first spring, one end of the guide post is fixedly connected to the bottom wall of the protection box, and the other end of the guide post is abutted to one side, far away from the resistor box body, of the bearing plate; the first spring is sleeved on the guide post, one end of the first spring is fixedly connected to the bottom wall of the protection box, and the other end of the first spring is fixedly connected to one side, away from the resistor box body, of the bearing plate.

Through adopting above-mentioned technical scheme, when the resistance box body received impulsive force, the impulsive force can be absorbed to first spring produces elasticity, can drive the loading board and remove, thereby buffering impulsive force to the influence of resistance box body.

Preferably, an elastic abutting piece is fixed on one side of the guide post, which is close to the bearing plate, and one side of the elastic abutting piece, which is far away from the guide post, abuts against the bearing plate.

Through adopting above-mentioned technical scheme, when the loading board butt in elasticity butt piece, perhaps resume to butt in elasticity butt piece after resistance box body atress when, can the impact force is buffered through elasticity butt piece in the office, further reduces the probability that resistance box body damaged.

Preferably, the second protection component comprises a guide rail and an elastic ball, the guide rail is fixedly connected to the inner side wall of the protection box, an extension plate is fixed at the bearing plate and the guide rail, the elastic ball is rotationally connected to the extension plate, and the elastic ball is in sliding connection with the guide rail.

Through adopting above-mentioned technical scheme, when the resistance box body received impulsive force, the loading board can remove thereupon to the elastic ball slides along the guide rail, because the frictional force of elastic ball is great, can effectively absorb impulsive force, forms the protection to the resistance box body.

Preferably, the second protection component is provided with three groups or four groups, and the three groups or four groups are respectively arranged on the inner side wall of the protection box.

Through adopting above-mentioned technical scheme, through multiunit second protection subassembly, form three point protection, perhaps protect from four directions to make the loading board be difficult for producing for the displacement of guard box in the horizontal direction.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the resistor box body is subjected to impact force, the second spring absorbs the impact force and is used for reducing the impact force received by the resistor box body, and meanwhile, the resistor box body is protected from different directions through the first protection component and the second protection component, so that the impact force received by the resistor box body is further reduced, and the accuracy of measured data is maintained;

2. when a worker needs to install the resistor box body, the limiting plate is pulled away from the bearing plate, and then the resistor box body is pushed in from the first avoidance groove until the resistor box body completely falls onto the bearing plate, and the resistor box body is convenient to install by the worker through the arrangement of the first avoidance groove;

3. when the resistor box body is subjected to impact force, the first spring can absorb the impact force, so that the first spring generates elastic force and can drive the bearing plate to move, and the influence of the impact force on the resistor box body is buffered; meanwhile, the bearing plate can move along with the bearing plate, so that the elastic balls slide along the guide rail, and impact force can be effectively absorbed due to the fact that the friction force of the elastic balls is large, and protection of the resistor box body is formed.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present application;

FIG. 2 is a cross-sectional plan view taken along the line A-A of FIG. 1, indicated by line A-A-1 (the resistor box body is not shown);

FIG. 3 is a cross-sectional view taken along the plane B-B in FIG. 1 (the resistor box body is not shown);

fig. 4 is a cross-sectional perspective view taken along the A-A plane in fig. 1, indicated by A-A-2 (the resistor box body is not shown).

Reference numerals: 1. a protection box; 11. a housing chamber; 12. a case; 13. a cover body; 2. a resistor box body; 3. a carrying plate; 31. an extension plate; 4. a first protective component; 41. a guide post; 411. an elastic abutting piece; 42. a first spring; 5. a second protection component; 51. a guide rail; 52. an elastic ball; 6. a third protection component; 61. a guide plate; 611. a guide groove; 612. a second spring; 62. a limiting plate; 621. a first avoidance groove; 63. and a limit threshold.

Detailed Description

The present application is described in further detail below in conjunction with fig. 1-4.

The embodiment of the application discloses a direct-current resistor box. Referring to fig. 1 and 2, a direct current resistance box includes a protection box 1, a resistance box body 2 disposed in the protection box 1, and a loading plate 3 for loading the resistance box body 2; wherein the protection box 1 is provided with a cover box body 12, and is provided with a containing chamber 11, and the bearing plate 3 is matched with the containing chamber 11. In order to provide stable buffering force to the resistor box body 2, a first protection component 4, a second protection component 5 and a third protection component 6 are arranged between the protection box 1 and the resistor box body 2; the first protection component 4, the second protection component 5 and the third protection component 6 form protection from different directions of the resistor box body 2 respectively, so that the impact force born by the resistor box is reduced, and the accuracy of measured data is kept.

In detail, the protection case 1 includes a case body 12 and a cover body 13, and a rotational connection is formed between one side of the case body 12 and one side of the cover body 13. The accommodating chamber 11 formed between the case 12 and the cover 13 is used for accommodating the resistor box body 2, the first protection component 4, the second protection component 5 and the third protection component 6.

The first protection component 4 comprises a guide column 41 and a first spring 42, and the first spring 42 is sleeved on the guide column 41. In this embodiment, guide post 41 is provided with a plurality of, evenly distributed in the diapire of box 12, and the one end of guide post 41 and the diapire fixed connection of box 12, the other end fixedly connected with elasticity butt piece 411 of guide post 41, elasticity butt piece 411 butt is in the loading board 3 one side of keeping away from resistance box body 2. Correspondingly, one end of the first spring 42 is fixedly connected to the bottom wall of the box body 12, and the other end of the first spring 42 is fixedly connected to one side, far away from the resistor box body 2, of the bearing plate 3.

When the resistor box body 2 is stressed, the impact force can be absorbed through the first spring 42, and in the process, the first spring 42 is enabled to stretch along the axial direction of the guide post 41 all the time through the guide of the guide post 41; when the resistor box body 2 is forced to be punched back to the direction of the guide post 41, the first spring 42 and the elastic abutting piece 411 absorb the impact force at the same time, so that the stability of the bearing plate 3 and the resistor box body 2 is further maintained.

Referring to fig. 2 and 3, the second protection assembly 5 includes a guide rail 51 and an elastic ball 52, the elastic ball 52 being slidable along the guide rail 51, and in the embodiment of the present application, the elastic ball 52 may be made of rubber or the like. Specifically, the guide rail 51 is fixedly connected to the inner side wall of the case 12, the extension plate 31 extends from the bearing plate 3 at the guide rail 51, and the elastic balls 52 are rotatably connected to two sides of the extension plate 31. When the resistor box body 2 is stressed, on one hand, the impact force received by the bearing plate 3 and the resistor box body 2 is absorbed through the first spring 42, and on the other hand, the moving speed of the bearing plate 3 and the resistor box body 2 is slowed down through the elastic balls 52 which are connected with the guide rail 51 in a sliding manner, so that the resistor box body 2 is further protected.

In this embodiment, the second protection component 5 is provided with three groups, and is respectively disposed on two side walls and a rear side wall in the box 12, so as to form stable three-point protection.

Referring to fig. 2 and 4, the third protection assembly 6 includes a guide plate 61 and a limit plate 62 slidably connected to the guide plate 61, one end of the guide plate 61 is fixedly connected to one side of the carrier plate 3 near the resistor box body 2, the other end of the guide plate 61 is provided with a guide groove 611, the limit plate 62 is inserted into the guide groove 611, and the limit plate 62 can slide relative to the guide plate 61; the limiting plate 62 is provided in an approximately L-shape, and the limiting plate 62, the guide plate 61, and the carrier plate 3 form a space for accommodating the resistor box body 2.

The bottom side wall of the guide groove 611 is fixed with a second spring 612, one end of the second spring 612 away from the bottom wall of the guide groove 611 is fixedly connected to the side wall of the limiting plate 62 penetrating into the guide groove 611, and the second spring 612 is used for limiting the position of the limiting plate 62 relative to the guide plate 61.

Specifically, the guide plate 61 is approximately U-shaped in projection on the horizontal plane, and the open end of the guide plate 61 faces to the side of the case 12 away from the hinge; the projection of the limiting plate 62 on the vertical plane is approximately L-shaped, and the projection of the limiting plate 62 on the horizontal plane is approximately back-shaped, so that the limiting plate 62 is abutted against the resistor box body 2 at the opening end of the guide plate 61; the guide plate 61 and the limit plate 62 are arranged between them to accommodate the resistor box body 2.

The limiting plate 62 is provided with a first avoiding groove 621 at the opening end of the guide plate 61, and the first avoiding groove 621 penetrates through one end, close to the bearing plate 3, of the limiting plate 62; when the worker installs the resistor box body 2, the limiting plate 62 can be moved along the guide plate 61 and away from the bearing plate 3, so that the worker can push the resistor box body 2 from the first avoidance groove 621.

In order to further limit the position of the resistor box body 2, a limiting threshold 63 is vertically fixed at the position of the first avoiding groove 621 on one side of the bearing plate 3, which is close to the resistor box body 2, and two ends of the limiting threshold 63 are fixedly connected with two end surfaces of the opening end of the guide plate 61 respectively, so that an integrated arrangement can be adopted. When the resistance box body 2 is installed by the staff, the limiting plate 62 is at least required to be pulled upwards until the distance between the limiting plate 62 and the limiting threshold 63 is larger than the height of the resistance box body 2, so that the staff can push into the resistance box body 2 conveniently.

The implementation principle of the embodiment of the application is as follows: when a worker installs the resistor box body 2, the limiting plate 62 is pulled upwards, at this time, the first spring 42 and the second spring 612 both generate a certain elastic force, and the length formed by the second spring 612 is greater than the length deformed by the first spring 42; when the distance between the limiting plate 62 and the limiting threshold 63 is greater than the height of the resistor box body 2, the resistor box body 2 is pushed in, the resistor box body 2 is placed on the bearing plate 3, then the limiting plate 62 is slowly released until the second spring 612 is restored to the natural state, at this time, the limiting plate 62 is abutted against the resistor box body 2, the first spring 42 is also restored to the natural state, and meanwhile, the bearing plate 3 is abutted against the elastic abutting piece 411.

When the resistor box body 2 is subjected to impact force, the first spring 42 absorbs the impact force, the bearing plate 3 is displaced under the action of the elastic force of the first spring 42, and meanwhile the elastic ball 52 slides along the guide rail 51, so that the elastic force generated by the first spring 42 can be relieved, and the first spring 42 is prevented from having larger rebound force; similarly, the second spring 612 also absorbs the elastic force generated by the ground spring, and the limiting plate 62 is displaced under the action of the elastic force of the second spring 612, so that the impact force received by the resistor box body 2 can be effectively slowed down, the aim of protecting the resistor box body 2 from multiple angles is fulfilled, the impact force received by the resistor box is effectively reduced, and the accuracy of measured data is maintained.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The direct-current resistor box comprises a resistor box body (2) and is characterized by further comprising a protection box (1) and a bearing plate (3), wherein the bearing plate (3) is arranged at the bottom side of the resistor box body (2), and the bearing plate (3) is matched with the protection box (1); the bearing plate (3) and the resistor box body (2) are both arranged in the protection box (1), a first protection component (4) for protecting the resistor box body (2) is arranged at the bottom side of the bearing plate (3), a second protection component (5) for protecting the resistor box body (2) is arranged on the side wall of the bearing plate (3), and a third protection component (6) is arranged at the top side of the bearing plate (3);

the third protection assembly (6) comprises a guide plate (61), a limiting plate (62) and a second spring (612), the guide plate (61) is fixedly connected to one side, close to the resistor box body (2), of the bearing plate (3), and the guide plate (61) is abutted to the side wall of the resistor box body (2); the limiting plate (62) is slidably connected to one side, far away from the bearing plate (3), of the guide plate (61), and the limiting plate (62) is abutted to the top side of the resistor box body (2); both ends of the second spring (612) are respectively connected with the guide plate (61) and the limiting plate (62).

2. The direct current resistor box according to claim 1, wherein the guide plate (61) is arranged in a U shape, a guide groove (611) is formed in one side of the guide plate (61) away from the bearing plate (3), and the second spring (612) is fixed at the bottom of the guide groove (611);

the limiting plate (62) is arranged in an L shape, one section of the limiting plate (62) is inserted into the guide groove (611), one end, away from the bottom of the guide groove (611), of the second spring (612) is fixedly connected with one section, inserted into the guide groove (611), of the limiting plate (62), and the other section of the limiting plate (62) is abutted to the top side of the resistor box body (2).

3. A direct current resistor box according to claim 2, characterized in that the limiting plate (62) extends at the opening of the guide, and a first avoiding groove (621) is formed between the limiting plate (62) and the bearing plate (3).

4. A direct current resistor box according to claim 3, characterized in that the bearing plate (3) and the first avoiding groove (621) are fixedly provided with a limit threshold (64), and the limit threshold (64) is perpendicular to the bearing plate (3).

5. A direct current resistor box according to claim 1, characterized in that the first protection component (4) comprises a guide post (41) and a first spring (42), one end of the guide post (41) is fixedly connected to the bottom wall of the protection box (1), and the other end of the guide post (41) is abutted to one side, far away from the resistor box body (2), of the bearing plate (3); the first spring (42) is sleeved on the guide post (41), one end of the first spring (42) is fixedly connected to the bottom wall of the protection box (1), and the other end of the first spring (42) is fixedly connected to one side, far away from the resistor box body (2), of the bearing plate (3).

6. A direct current resistor box according to claim 5, characterized in that an elastic abutment piece (411) is fixed on the side of the guide post (41) close to the bearing plate (3), and the side of the elastic abutment piece (411) far away from the guide post (41) abuts against the bearing plate (3).

7. A direct current resistor box according to claim 1, characterized in that the second protection component (5) comprises a guide rail (51) and an elastic ball (52), the guide rail (51) is fixedly connected to the inner side wall of the protection box (1), the extension plate (31) is fixedly arranged at the bearing plate (3) and the guide rail (51), the elastic ball (52) is rotatably connected to the extension plate (31), and the elastic ball (52) is slidably connected to the guide rail (51).

8. A direct current resistance box according to claim 7, characterized in that the second protection assembly (5) is provided with three or four groups, respectively, on the inner side walls of the protection box (1).