Vibration reduction fixing device of relay without fixing pins

Abstract

The utility model relates to a vibration damping fixing device of a relay without fixing pins, which is used for fixing the relay in a shell and comprises a horizontal bottom plate used for supporting the bottom of the relay, and upward longitudinal frames are arranged on the side edges of the horizontal bottom plate in at least three directions. Wherein the two opposite longitudinal frames are provided with connecting structures fixedly connected with the shell, and the longitudinal frames are provided with elastic jacking structures used for jacking the outer side face of the relay. The vibration reduction fixing device of the relay without the fixing feet is provided with the horizontal bottom plate used for supporting the bottom of the relay and the longitudinal frame used for limiting the horizontal freedom degree of the relay, and the longitudinal frame is provided with the connecting structure fixedly connected with the shell and the elastic jacking structure elastically connected with the relay. According to the utility model, the conventional rigid connection between the relay and the shell is changed into flexible connection, so that the relay can be fixed, the vibration between the relay and the shell can be eliminated, and the problem that the relay falls off due to the vibration is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of relay auxiliary devices, in particular to a vibration reduction fixing device for a relay without fixing feet. Background Art

[0002] The BDU (high-voltage distribution unit) is responsible for distributing and managing power within the high-voltage system. It provides charging and discharging control, overload and short-circuit protection, and high-voltage sampling for the entire vehicle. The BDU primarily consists of components such as high-voltage relays, fuses, pre-charge resistors, pre-charge relays, current sensors / shunts, copper busbars, wiring harnesses, and a housing. The BDU's main circuits include the main circuit, pre-charge circuit, discharge circuit, charging circuit, and heating circuit. The charging and heating circuits are optional, depending on customer needs.

[0003] Existing BDUs all use traditional clip-on fixing methods to connect the relay to the housing. However, this traditional fixing method can cause problems such as bolts fixing the relay to fall off, clips to break, and the connection between the relay and the device to fall off during vibration, thereby posing a risk of vehicle fire. Utility Model Content

[0004] The embodiment of the utility model provides a vibration-damping fixing device for a relay without fixing feet, so as to solve the problems in the prior art of the relay's bolts falling off, buckles breaking, and the connection position between the relay and the device falling off due to the inability of the fixing method to absorb vibration.

[0005] In order to achieve the above objectives, the present invention provides the following technical solutions:

[0006] A vibration-damping fixing device for a relay without fixing feet, used to fix the relay in a housing, includes a horizontal base plate for supporting the bottom of the relay, and upwardly arranged vertical frames are provided on the side edges of at least three directions of the horizontal base plate, two of which are oppositely arranged vertical frames are provided with connecting structures fixedly connected to the housing, and the vertical frames are provided with elastic tightening structures for tightening the outer side surface of the relay.

[0007] Furthermore, the elastic tightening structure includes a spring buckle with one end fixedly connected to the vertical frame, and the tightening direction of the spring buckle is perpendicular to the surface of the relay.

[0008] Furthermore, the elastic tightening structure includes two spring buckles arranged in mirror image.

[0009] Furthermore, a protrusion is provided on the side of the tightening end of the spring buckle facing the relay.

[0010] Furthermore, a first reinforcing rib is provided between the spring buckle and the longitudinal frame.

[0011] Furthermore, the fixing and locking direction of the connecting structure and the tightening direction of the elastic tightening structure are opposite to each other.

[0012] Furthermore, the connection structure includes a fixing frame perpendicular to the longitudinal frame and the horizontal base plate, and a metal bushing is provided on the fixing frame.

[0013] Furthermore, a second reinforcing rib is provided between the connecting structure and the longitudinal frame.

[0014] The embodiment of the utility model has the following advantages:

[0015] The utility model discloses a vibration-damping fixing device for a relay without fixing feet, which is provided with a horizontal bottom plate for supporting the bottom of the relay, and a vertical frame for limiting the horizontal freedom of the relay. The vertical frame is provided with a connection structure fixedly connected to the housing, and an elastic tightening structure elastically connected to the relay, thereby converting the rigid connection between the traditional relay and the housing into a flexible connection, which not only fixes the relay, but also eliminates the vibration between the relay and the housing, thereby avoiding the problem of the relay falling off due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0018] Figure 1 A diagram showing the working state of a vibration reduction and fixing device for a relay without a fixing foot provided by an embodiment of the present utility model;

[0019] Figure 2 This is a product structure diagram of a vibration reduction and fixing device for a relay without fixing feet provided in an embodiment of the utility model.

[0020] In the picture:

[0021] 1. Housing; 2. Relay; 3. Horizontal bottom plate; 4. Longitudinal plate; 5. Elastic tightening structure; 6. Spring buckle; 7. Protrusion; 8. First reinforcing rib; 9. Connection structure; 10. Metal bushing; 11. Second reinforcing rib. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0023] like Figure 1-2 As shown, a vibration-damping fixing device for a relay 2 without fixed feet is used to fix the relay 2 without fixed feet (hereinafter referred to as relay 2) in a housing 1. The relay 2 without fixed feet is mostly a rectangular structure, so the overall shape of the vibration-damping fixing device in this embodiment is also a rectangular structure.

[0024] The vibration-damping fixture includes a horizontal base plate 3 for supporting the bottom of relay 2. This rectangular plate is slightly narrower than the bottom surface of relay 2, leaving space for the subsequent elastic support structure 5. Slots arranged around the edge of the base plate 3 allow for detachable connection, allowing for replacement of base plates 3 of varying widths to accommodate relays 2 of varying sizes.

[0025] The horizontal base plate 3 is provided with upwardly projecting vertical frames on at least three sides thereof. The bottoms of the vertical frames may be provided with slots for inserting the horizontal base plate 3. Two of the opposing vertical frames are provided with connecting structures 9 fixedly connected to the housing 1. These vertical frames are also provided with elastic tightening structures 5 for tightening against the outer surface of the relay 2. If vertical frames are provided on all four sides of the horizontal base plate 3, then both opposing vertical frames are provided with elastic tightening structures 5.

[0026] The elastic tightening structure 5 includes a spring clip 6 fixedly connected to the longitudinal frame at one end. The tightening direction of the spring clip 6 is perpendicular to the surface of the relay 2. In order not to affect the normal operation of the high-voltage distribution module, the spring clip 6 is made of a non-conductive material, such as a plastic with a certain elasticity. Since the spring clip 6 is arranged at an angle or horizontally relative to the side wall of the relay 2, the spring clip 6 moves in an arc when the relay 2 presses the spring clip 6. In order to neutralize the lateral force of the spring clip 6, two mirror-image spring clips 6 are provided. The two spring clips 6 symmetrically tighten on both sides of the relay 2. The lateral forces of the two spring clips 6 are relative and in opposite directions, thereby achieving neutralization, thereby making the tightening force on the relay 2 more uniform.

[0027] The tightening end of the snap 6 is provided with a protrusion 7 on the side facing the relay 2, which is used to increase the distance between the snap 6 and the relay 2. The snap 6 does not need to be arranged diagonally; simply arranging it horizontally can achieve elastic tightening of the relay 2, minimizing the thickness of the longitudinal frame and the overall size of the device. Furthermore, the protrusion 7 is spherical. Regardless of the position of the snap 6 when tightened, the protrusion 7 only transmits a tightening force perpendicular to the surface of the relay 2 to the relay 2. The connection between the snap 6 and the relay 2 is provided with an anti-slip structure. The anti-slip structure can be an anti-slip sleeve, a suction cup structure, or the protrusion 7 is made of an anti-slip material. This increases the friction between the snap 6 and the relay 2, preventing the relay 2 from vibrating upward and separating from the snap 6.

[0028] A first reinforcing rib 8 is provided between the spring buckle 6 and the longitudinal frame. The first reinforcing rib 8 can be provided on one or both sides of the spring buckle 6 to enhance the hardness and connection stability of the spring buckle 6. In this embodiment, the first reinforcing rib 8 is preferably a triangular plate or a trapezoidal plate perpendicular to the spring buckle 6.

[0029] The fixing and locking direction of the connecting structure 9 is opposite to the tightening direction of the elastic tightening structure 5. This maximizes the ability of the elastic tightening structure 5 to tighten the relay 2, resulting in a more concentrated force and preventing forces from being applied in other directions. The connecting structure 9 includes a fixing frame perpendicular to the vertical frame and the horizontal base plate 3. The fixing frame is provided with a metal bushing 10, which is passed through and fixedly connected to the housing 1 using M4 bolts. A second reinforcing rib 11 is provided between the connecting structure 9 and the vertical frame. The second reinforcing rib 11 is a triangular plate or trapezoidal plate perpendicular to the vertical frame and the connecting structure 9.

[0030] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

Claims

1. A vibration-damping fixing device for a relay without fixing pins, used to fix the relay in a housing, characterized by: It includes a horizontal base plate for supporting the bottom of the relay, and upwardly arranged vertical frames are provided on the side edges of at least three directions of the horizontal base plate, two of which are oppositely arranged vertical frames are provided with connecting structures fixedly connected to the shell, and the vertical frames are provided with elastic tightening structures for tightening the outer side of the relay.

2. The vibration-damping fixing device for a relay without fixing pins according to claim 1, characterized in that: The elastic tightening structure includes a spring buckle with one end fixedly connected to the vertical frame, and the tightening direction of the spring buckle is perpendicular to the surface of the relay.

3. The vibration reduction fixing device for a relay without fixing pins according to claim 2, characterized in that: The elastic tightening structure includes two spring buckles arranged in mirror image.

4. The vibration-damping fixing device for a relay without fixing pins according to claim 2, characterized in that: A protrusion is provided on the side of the tightening end of the spring buckle facing the relay.

5. The vibration reduction fixing device for a relay without fixing pins according to claim 2, characterized in that: A first reinforcing rib is provided between the spring buckle and the longitudinal frame.

6. The vibration reduction fixing device for a relay without fixing pins according to claim 1, characterized in that: The fixing and locking direction of the connecting structure and the pressing direction of the elastic pressing structure are opposite to each other.

7. The vibration-damping fixing device for a relay without fixing pins according to claim 6, characterized in that: The connection structure comprises a fixing frame perpendicular to the longitudinal frame and the horizontal bottom plate, and a metal bushing is provided on the fixing frame.

8. The vibration-damping fixing device for a relay without fixing pins according to claim 6 or 7, characterized in that: A second reinforcing rib is provided between the connecting structure and the longitudinal frame.

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