CN211175142U

CN211175142U - Bolt-fixed drum brake capable of electronic alarm

Info

Publication number: CN211175142U
Application number: CN201921470729.XU
Authority: CN
Inventors: 黄东方; 施英杰; 凌利峰; 王变变; 崔娇
Original assignee: Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
Current assignee: Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-08-04
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a fixed drum brake of bolt that can electronic alarm. The brake shoe is characterized by also comprising a saddle-shaped gasket, a check ring and a fixed pin, wherein a lead seat is fixedly arranged in a shoe plate of the brake shoe through the saddle-shaped gasket, the check ring and the fixed pin, the lead seat is beside the shoe plate and is positioned at one end far away from the friction plate, and an annular groove for mounting the saddle-shaped gasket and the check ring is formed in the lead seat; the wire holder is equipped with the through-hole that is used for installing the fixed pin in the other one end that just is located the logical inslot of friction disc of hoof piece, and both ends are located the one side that is close to the friction disc at the hoof piece after the fixed pin passes the through-hole for with wire holder axial spacing not deviate from. The utility model discloses a drum brake can be applicable to the hoof piece of different thickness, can be more nimble stably directly perceived timely realization report to the police, accurate effectual warning user in time changes the hoof assembly, reduces the damage of the peripheral spare part that the hoof overgrinding arouses, reduces the replacement cost.

Description

Bolt-fixed drum brake capable of electronic alarm

Technical Field

The utility model relates to a drum brake has especially related to a fixed drum brake of bolt that can electronic alarm.

Background

Drum brakes are widely applied to various small, medium and heavy trucks, and with the development of the automobile industry, people have increasingly high requirements on the timeliness and convenience of maintenance and replacement of various parts of vehicles.

The drum brake is hermetically arranged on a tire of a vehicle, the service conditions of all parts on the brake cannot be seen from the outside, the service life of the whole vehicle is very long and is far longer than that of all parts on the brake, and all parts need to be replaced when reaching the service life; wherein two brake shoes on the stopper belong to wearing and tearing spare, and life is less than the life of whole car far away, need change many times. While the replacement cycle of the brake shoes has no accurate requirements and judgment standards, however, inaccurate evaluation may result in:

firstly, the friction plate of the brake shoe is not completely worn: to determine whether the friction plate is worn to the limit, the whole vehicle tire and the brake drum need to be detached, and if the friction plate is not worn completely, the brake shoe is directly replaced, so that waste is caused; if the tire and the brake drum are installed for continuous use without replacing the brake shoe, the disassembly and the installation of the tire and the brake drum need to be repeated for many times, which wastes manpower and material resources.

Secondly, excessive abrasion of the friction plate of the brake shoe: carry out the friction lining on the brake shoe with the brake drum normal wearing and tearing, the contact wear effect of friction lining and brake drum is normal wearing and tearing consumption, can not destroy the working face of brake drum, nevertheless do not in time change when the whole wearing and tearing of friction lining, can lead to brake drum and the brake shoe contact wear of supporting the friction lining, and brake shoe and brake drum wearing and tearing can lead to the brake drum fish tail, can not play the braking action even, still need change the brake drum together when changing the brake shoe, and the cost of brake drum is very high, can cause very big waste.

No matter the brake shoe friction plate is abraded incompletely or excessively, a large amount of manpower and material resources are wasted.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of the replacement cycle evaluation difficulty of whole car brake shoe among the prior art, the utility model aims at providing a fixed drum brake of bolt that can electronic alarm, make drum brake at the in-process that whole car used, can be timely change the brake shoe that puts in place wearing and tearing.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model discloses a bottom plate and brake wheel cylinder assembly, leading brake shoe assembly and the rearmounted brake shoe assembly of installing on the bottom plate, leading brake shoe assembly include leading hoof piece and leading friction disc, are fixed with the electronic alarm subassembly on the leading brake shoe assembly, the electronic alarm subassembly includes wire holder, wire, gum cover and interface casing, the reverse bend that the coiling formed in the middle part of the wire was on the wire holder is as the head of electronic alarm subassembly, and the head is installed on the hoof piece of brake shoe, and the hoof piece of brake shoe is opened and is had the logical groove that is used for the head to run through, and it has the recess that is used for the head to bury on the friction disc of brake shoe, and the head tip buries the logical inslot of friction disc after passing the logical groove of hoof piece; the wire guide seat is fixedly arranged in a shoe plate of the brake shoe through the saddle-shaped gasket, the check ring and the fixing pin, and the electronic alarm assembly is not fixedly connected with a shoe rib of the drum brake but fixedly connected with the brake bottom plate; the wire guide seat is arranged beside the shoe plate and positioned at one end far away from the friction plate, and is provided with an annular groove for mounting a saddle-shaped gasket and a check ring, the saddle-shaped gasket and the check ring are both mounted in the annular groove, one end face of the saddle-shaped gasket is connected to one side of the shoe plate far away from the friction plate, the other end face of the saddle-shaped gasket is connected with one end face of the check ring, and the other end face of the check ring is connected to a groove wall step of the annular; the wire holder is equipped with the through-hole that is used for installing the fixed pin in the other one end that just is located the logical inslot of friction disc of hoof piece, and both ends are located the one side that is close to the friction disc at the hoof piece after the fixed pin passes the through-hole for with wire holder axial spacing not deviate from.

Saddle type packing ring possesses elasticity like this, has installed the wire holder through the part cooperation of saddle type packing ring, retaining ring and fixed pin for the installation of wire holder has more stable mounting means, and only limited activity is applicable to the hoof piece of different thickness.

In the electronic alarm assembly, the rubber sleeve directly penetrates through the brake bottom plate of the drum brake to be connected with the interface shell, and the rubber sleeve is arranged in a hole of the brake bottom plate of the drum brake in a penetrating mode through the rubber plug.

The wire seat is of a cylindrical structure, the two symmetrical sides of the cylindrical structure are cut into tangent planes to form flat positioning surfaces, through grooves with the same sections as the flat positioning surfaces of the wire seat are also formed in the shoe plate of the brake shoe, and the flat positioning surfaces of the wire seat are embedded in the through grooves of the shoe plate to be positioned.

The wire seat is made of high-temperature resistant materials.

The fixing pins are in the forms of fork pin bolts, cylindrical pins and flat pins.

The utility model has the advantages that:

the utility model discloses simple structure, the simple installation can install more nimble steadily, and is lower for present electronic alarm assembly cost for drum brake, and the range of application is wider.

The utility model discloses can realize the timely feedback when the drum brake in the drum brake shoe friction disc wearing and tearing reached the limit, solve the unable accurate, timely defect of changing of brake shoe in the use of drum brake.

The utility model discloses use, change cycle for present drum brake shoe provide accurate signal feedback, avoided using the whole car of drum brake to sell the waste of a large amount of manpower and materials in the back.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a three-dimensional explosion diagram of the present invention.

Fig. 3 is an overall structure diagram of the present invention.

Fig. 4 is a schematic view of the installation of the present invention on the brake.

Fig. 5 is a Y-zoom of fig. 4.

In the figure: the brake comprises a wire base 1, a wire 2, a rubber sleeve 3, a first wire clamp 4, an interface shell 5, a second wire clamp 6, a saddle-shaped washer 7, a retainer ring 8, an electronic alarm component 9, a rubber plug 10, a front shoe 11, a front friction plate 12, a fixing pin 13, a bottom plate 14, a brake drum 15, a front brake shoe assembly 16, a brake wheel cylinder assembly 17 and a rear brake shoe assembly 18.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments.

The utility model discloses a drum brake includes bottom plate 14 and installs brake wheel cylinder assembly 17, leading brake shoe assembly 16 and the rearmounted brake shoe assembly 18 on bottom plate 14, and leading brake shoe assembly 16 includes leading shoe plate 11 and leading friction disc 12. An electronic alarm component 9 is fixed on the front brake shoe assembly 16, as shown in fig. 1-5, the electronic alarm component 9 includes a wire base 1, a wire 2, a rubber sleeve 3 and an interface shell 5, the middle part of the wire 2 is wound in a guide groove of the wire base 1, the wire base 1 is fixed on the front shoe plate 11, two ends of the wire 2 are wound out from the wire base 1 and then penetrate through the rubber sleeve 3, the wire 2 extending out of the guide base 1 is wrapped by the rubber sleeve 3, two ends of the wire 2 penetrate through the rubber sleeve 3 and then extend into a wire hole at one end of the interface shell 5, and the other end of the interface shell 5 is connected with an alarm circuit. The interface shell 5 and the rubber sleeve 3 act together to tighten the lead 2; the other end of the interface shell 5 is provided with an electric connector matched and connected with a corresponding connector in an automobile alarm circuit.

As shown in fig. 1, the middle of the lead 2 is wound on the lead seat 1 to form a reverse bending part as the head X of the electronic alarm assembly 9, and the head is positioned at the wear limit position of the friction plate of the hoof.

The wire seat 1 is of a cylindrical structure, the two symmetrical sides of the cylindrical structure are cut into tangent planes to form flat positioning surfaces, through grooves with the same sections as the flat positioning surfaces of the wire seat 1 are also formed in the shoe plate 11 of the brake shoe, and the flat positioning surfaces of the wire seat 1 are embedded in the through grooves of the shoe plate 11 in an inosculating mode to be positioned, so that the rotation freedom degree can be limited, and the reliability is improved.

As shown in fig. 4-5, a saddle-shaped washer 7, a retainer ring 8 and a fixing pin 13 are further provided in the specific implementation, the wire holder 1 is fixedly installed in a shoe 11 of the brake shoe through the saddle-shaped washer 7, the retainer ring 8 and the fixing pin 13, the wire holder 1 is beside the shoe 11 and is located at one end far away from the friction plate 12, and is provided with an annular groove for installing the saddle-shaped washer 7 and the retainer ring 8, the saddle-shaped washer 7 and the retainer ring 8 are both installed in the annular groove, one end face of the saddle-shaped washer 7 is connected to one side of the shoe 11 far away from the friction plate 12, the other end face of the saddle-shaped washer 7 is connected to one end face of the retainer ring 8, the other end face of the retainer ring 8 is connected to a groove wall step of the annular groove far away from the friction plate 12, and the inner diameter of the retainer ring 8 is smaller than the radial dimension; wire holder 1 is equipped with the through-hole that is used for installing fixed pin 13 at the other one end that just is located the logical inslot of friction disc 12 of hoof piece 11, and fixed pin 13 passes behind the through-hole both ends and is located one side that is close to friction disc 12 at hoof piece 11, and the length of fixed pin 13 is greater than the logical groove size of hoof piece 11 for with spacing not deviating from of wire holder 1 axial, even make wire holder 1 fix in the hoof piece 11 outside through fixed pin 13.

The saddle washer has elasticity like this, has installed wire holder 1 through the cooperation of the part of saddle washer 7, retaining ring 8 and fixed pin 13 for the installation of wire holder 1 has elasticity and limited activity, is applicable to the hoof piece of different thickness.

As shown in fig. 5, the electronic warning assembly 9 is not fixedly connected with the tendons, but fixedly connected with the brake bottom plate 14. Specifically, in the electronic alarm assembly 9, the rubber sleeve 3 between the wire holder 1 and the first wire clamp 4 directly passes through the brake bottom plate 14 of the drum brake to be connected with the interface housing 5, the rubber sleeve 3 is installed in a hole of the brake bottom plate 14 of the drum brake in a penetrating manner through the rubber plug 10, and the wire of the alarm mechanism is led out of the brake through the rubber plug with an opening on one side, so that the connection with the outside is realized.

The utility model discloses a pencil of electronic alarm subassembly 9 passes through wire holder 1, first line card 4 and the trend that second line card 6 realized in the car chassis is fixed.

Wire holder 1 one end has the recess that is used for installing saddle packing ring 7 and retaining ring 8, fixes in hoof piece 11 one side through saddle packing ring 7 and retaining ring 8, and the other end is equipped with the logical groove that is used for installing fixed pin 13, fixes at hoof piece 11 opposite side through fixed pin 13 to realized that the pencil part of electronic alarm subassembly 9 is fixed, control alarm subassembly's trend and pencil position.

The first line card 4 is used for fixing the rubber sleeve 3 at the corresponding position of the automobile chassis to realize the trend and fixation of the alarm on the chassis.

The second wire card 6 is used for fixing the interface shell 5 in an automobile electronic circuit, so that the interface shell 5 is connected with a corresponding dual interface, and the electronic alarm component 9 is connected with the automobile circuit to realize signal feedback.

The utility model discloses a working process is:

when the piston of the brake wheel cylinder acts on the front-arranged tendon and the rear-arranged tendon in the using process, the front-arranged brake shoe assembly moves towards the front side, and the rear-arranged shoe assembly moves towards the rear side, and is respectively contacted with and abraded by the brake drum.

Normally, the alarm circuit to which the wire 2 is connected is in a closed state. As the front friction plate 12 in the drum brake is worn to the groove, the head X of the lead 2 contacts the brake drum 15 and leads the lead 2 to be worn, the alarm circuit connected after the lead 2 is worn is disconnected, the alarm circuit sends out alarm signal feedback to remind that the friction plate of the brake shoe is worn to the limit and the brake shoe needs to be replaced by a new one.

Therefore, the utility model discloses can reach the wearing and tearing limit when the hoof friction disc, with electronic signal feedback to the car screen on, audio-visual timely realization is reported to the police, accurate effectual warning user in time changes the hoof assembly, reduces the damage of the peripheral spare part that the hoof overgrinding arouses, reduces the replacement cost.

The above examples are for the description of the present invention, not for the limitation of the present invention, and any simple modification of the present invention all belongs to the protection scope of the present invention.

Claims

1. A bolt-fixed drum brake capable of giving an electronic alarm comprises a base plate (14), a brake wheel cylinder assembly (17), a front brake shoe assembly (16) and a rear brake shoe assembly (18), wherein the brake wheel cylinder assembly (17), the front brake shoe assembly (16) and the rear brake shoe assembly (18) are installed on the base plate (14), the front brake shoe assembly (16) comprises a front shoe plate (11) and a front friction plate (12), an electronic alarm assembly (9) is fixed on the front brake shoe assembly (16), the electronic alarm assembly (9) comprises a wire base (1), a wire (2), a rubber sleeve (3) and an interface shell (5), a reverse bending part formed on the wire base (1) in a winding mode in the middle of the wire (2) serves as a head (X) of the electronic alarm assembly (9), the head (X) is installed on the shoe plate (11) of a brake shoe, a through groove for the head (X) to penetrate through is formed in the shoe plate (11), and a groove for embedding the head (X) is formed in the friction plate (12, the end part of the head part (X) penetrates through the through groove of the shoe plate (11) and then is embedded into the through groove of the friction plate (12); the method is characterized in that:

the wire guide seat (1) is fixedly arranged in a shoe plate (11) of a brake shoe through the saddle-shaped gasket (7), the retainer ring (8) and the fixing pin (13), and the electronic alarm assembly (9) is not fixedly connected with a shoe rib of the drum brake but fixedly connected with a brake bottom plate (14); the wire guide seat (1) is provided with an annular groove used for mounting a saddle-shaped gasket (7) and a check ring (8) at the position beside a shoe plate (11) and at the position of one end far away from the friction plate (12), the saddle-shaped gasket (7) and the check ring (8) are both mounted in the annular groove, one end face of the saddle-shaped gasket (7) is connected to one side of the shoe plate (11) far away from the friction plate (12), the other end face of the saddle-shaped gasket (7) is connected with one end face of the check ring (8), and the other end face of the check ring (8) is connected to a groove wall step of the annular groove; wire holder (1) is equipped with the through-hole that is used for installing fixed pin (13) beside shoe (11) and be located the logical inslot of friction disc (12), and both ends are located the one side that is close to friction disc (12) at shoe (11) after fixed pin (13) pass the through-hole for spacing not deviating from of wire holder (1) axial.

2. A drum brake with an electronic alarm latch according to claim 1, characterised in that: in the electronic alarm assembly (9), the rubber sleeve (3) directly penetrates through a brake bottom plate (14) of the drum brake to be connected with the interface shell (5), and the rubber sleeve (3) is arranged in a hole of the brake bottom plate (14) of the drum brake in a penetrating mode through the rubber plug (10).

3. A drum brake with an electronic alarm latch according to claim 1, characterised in that: the brake shoe is characterized in that the wire seat (1) is of a cylindrical structure, the two symmetrical sides of the cylindrical structure are cut into sections to form flat positioning surfaces, through grooves with the same sections as the flat positioning surfaces of the wire seat (1) are also formed in the shoe plate (11) of the brake shoe, and the flat positioning surfaces of the wire seat (1) are embedded in the through grooves of the shoe plate (11) to be positioned.

4. A drum brake with an electronic alarm latch according to claim 1, characterised in that: the wire seat (1) is made of high-temperature-resistant materials.

5. A drum brake with an electronic alarm latch according to claim 1, characterised in that: the fixing pin (13) is in the form of a fork pin bolt, a cylindrical pin and a flat pin.